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awips2/nativeLib/rary.ohd.pproc.gribit/TEXT/w3fi63.f
mjames-upc 7e05f25909 initial commit
2017-04-21 18:33:55 -06:00

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SUBROUTINE W3FI63(MSGA,KPDS,KGDS,KBMS,DATA,KPTR,KRET)
C$$$ SUBPROGRAM DOCUMENTATION BLOCK
C . . . .
C SUBPROGRAM: W3FI63 UNPK GRIB FIELD TO GRIB GRID
C PRGMMR: FARLEY ORG: NMC421 DATE:94-11-22
C
C ABSTRACT: UNPACK A GRIB (EDITION 1) FIELD TO THE EXACT GRID
C SPECIFIED IN THE GRIB MESSAGE, ISOLATE THE BIT MAP, AND MAKE
C THE VALUES OF THE PRODUCT DESCRIPTON SECTION (PDS) AND THE
C GRID DESCRIPTION SECTION (GDS) AVAILABLE IN RETURN ARRAYS.
C
C WHEN DECODING IS COMPLETED, DATA AT EACH GRID POINT HAS BEEN
C RETURNED IN THE UNITS SPECIFIED IN THE GRIB MANUAL.
C
C PROGRAM HISTORY LOG:
C 91-09-13 CAVANAUGH
C 91-11-12 CAVANAUGH MODIFIED SIZE OF ECMWF GRIDS 5-8
C 91-12-22 CAVANAUGH CORRECTED PROCESSING OF MERCATOR PROJECTIONS
C IN GRID DEFINITION SECTION (GDS) IN
C ROUTINE FI633
C 92-08-05 CAVANAUGH CORRECTED MAXIMUM GRID SIZE TO ALLOW FOR
C ONE DEGREE BY ONE DEGREE GLOBAL GRIDS
C 92-08-27 CAVANAUGH CORRECTED TYPO ERROR, ADDED CODE TO COMPARE
C TOTAL BYTE SIZE FROM SECTION 0 WITH SUM OF
C SECTION SIZES.
C 92-10-21 CAVANAUGH CORRECTIONS WERE MADE (IN FI634) TO REDUCE
C PROCESSING TIME FOR INTERNATIONAL GRIDS.
C REMOVED A TYPOGRAPHICAL ERROR IN FI635.
C 93-01-07 CAVANAUGH CORRECTIONS WERE MADE (IN FI635) TO
C FACILITATE USE OF THESE ROUTINES ON A PC.
C A TYPOGRAPHICAL ERROR WAS ALSO CORRECTED
C 93-01-13 CAVANAUGH CORRECTIONS WERE MADE (IN FI632) TO
C PROPERLY HANDLE CONDITION WHEN
C TIME RANGE INDICATOR = 10.
C ADDED U.S.GRID 87.
C 93-02-04 CAVANAUGH ADDED U.S.GRIDS 85 AND 86
C 93-02-26 CAVANAUGH ADDED GRIDS 2, 3, 37 THRU 44,AND
C GRIDS 55, 56, 90, 91, 92, AND 93 TO
C LIST OF U.S. GRIDS.
C 93-04-07 CAVANAUGH ADDED GRIDS 67 THRU 77 TO
C LIST OF U.S. GRIDS.
C 93-04-20 CAVANAUGH INCREASED MAX SIZE TO ACCOMODATE
C GAUSSIAN GRIDS.
C 93-05-26 CAVANAUGH CORRECTED GRID RANGE SELECTION IN FI634
C FOR RANGES 67-71 & 75-77
C 93-06-08 CAVANAUGH CORRECTED FI635 TO ACCEPT GRIB MESSAGES
C WITH SECOND ORDER PACKING. ADDED ROUTINE FI636
C TO PROCESS MESSAGES WITH SECOND ORDER PACKING.
C 93-09-22 CAVANAUGH MODIFIED TO EXTRACT SUB-CENTER NUMBER FROM
C PDS BYTE 26
C 93-10-13 CAVANAUGH MODIFIED FI634 TO CORRECT GRID SIZES FOR
C GRIDS 204 AND 208
C 93-10-14 CAVANAUGH INCREASED SIZE OF KGDS TO INCLUDE ENTRIES FOR
C NUMBER OF POINTS IN GRID AND NUMBER OF WORDS
C IN EACH ROW
C 93-12-08 CAVANAUGH CORRECTED TEST FOR EDITION NUMBER INSTEAD
C OF VERSION NUMBER
C 93-12-15 CAVANAUGH MODIFIED SECOND ORDER POINTERS TO FIRST ORDER
C VALUES AND SECOND ORDER VALUES CORRECTLY
C IN ROUTINE FI636
C 94-03-02 CAVANAUGH ADDED CALL TO W3FI83 WITHIN DECODER. USER
C NO LONGER NEEDS TO MAKE CALL TO THIS ROUTINE
C 94-04-22 CAVANAUGH MODIFIED FI635, FI636 TO PROCESS ROW BY ROW
C SECOND ORDER PACKING, ADDED SCALING CORRECTION
C TO FI635, AND CORRECTED TYPOGRAPHICAL ERRORS
C IN COMMENT FIELDS IN FI634
C 94-05-17 CAVANAUGH CORRECTED ERROR IN FI633 TO EXTRACT RESOLUTION
C FOR LAMBERT-CONFORMAL GRIDS. ADDED CLARIFYING
C INFORMATION TO DOCBLOCK ENTRIES
C 94-05-25 CAVANAUGH ADDED CODE TO PROCESS COLUMN BY COLUMN AS WELL
C AS ROW BY ROW ORDERING OF SECOND ORDER DATA
C 94-06-27 CAVANAUGH ADDED PROCESSING FOR GRIDS 45, 94 AND 95.
C INCLUDES CONSTRUCTION OF SECOND ORDER BIT MAPS
C FOR THINNED GRIDS IN FI636.
C 94-07-08 CAVANAUGH COMMENTED OUT PRINT OUTS USED FOR DEBUGGING
C 94-09-08 CAVANAUGH ADDED GRIDS 220, 221, 223 FOR FNOC
C 94-11-10 FARLEY INCREASED MXSIZE FROM 72960 TO 260000
C FOR .5 DEGREE SST ANALYSIS FIELDS
C 94-12-06 R.E.JONES CHANGES IN FI632 FOR PDS GREATER THAN 28
C 95-02-14 R.E.JONES CORRECT IN FI633 FOR NAVY WAFS GRIB
C 95-03-20 M.BALDWIN FI633 MODIFICATION TO GET
C DATA REP TYPES [KGDS(1)] 201 AND 202 TO WORK.
C 95-04-10 E.ROGERS ADDED GRIDS 96 AND 97 FOR ETA MODEL IN FI634.
C 95-04-26 R.E.JONES FI636 CORECTION FOR 2ND ORDER COMPLEX
C UNPACKING. R
C 95-05-19 R.E.JONES ADDED GRID 215, 20 KM AWIPS GRID
C 95-07-06 R.E.JONES ADDED GAUSSIAN T62, T126 GRID 98, 126
C 95-10-19 R.E.JONES ADDED GRID 216, 45 KM ETA AWIPS ALASKA GRID
C 95-10-31 IREDELL REMOVED SAVES AND PRINTS
C 96-03-07 R.E.JONES CONTINUE UNPACK WITH KRET ERROR 9 IN FI631.
C 96-08-19 R.E.JONES ADDED MERCATOR GRIDS 8 AND 53, AND GRID 196
C 97-02-12 W BOSTELMAN CORRECTS ECMWF US GRID 2 PROCESSING
C 98-06-17 IREDELL REMOVED ALTERNATE RETURN IN FI637
C 98-08-31 IREDELL ELIMINATED NEED FOR MXSIZE
C 98-09-02 Gilbert Corrected error in map size for U.S. Grid 92
C 98-09-08 BALDWIN ADD DATA REP TYPE [KGDS(1)] 203
C 01-03-08 ROGERS CHANGED ETA GRIDS 90-97, ADDED ETA GRIDS
C 194, 198. ADDED AWIPS GRIDS 241,242,243,
C 245, 246, 247, 248, AND 250
C 01-03-19 VUONG ADDED AWIPS GRIDS 238,239,240, AND 244.
C 2001-06-06 GILBERT CHanged gbyte/sbyte calls to refer to
C Wesley Ebisuzaki's endian independent
C versions gbytec/sbytec.
C Removed equivalences.
C
C USAGE: CALL W3FI63(MSGA,KPDS,KGDS,KBMS,DATA,KPTR,KRET)
C INPUT ARGUMENT LIST:
C MSGA - GRIB FIELD - "GRIB" THRU "7777" CHAR*1
C (MESSAGE CAN BE PRECEDED BY JUNK CHARS)
C
C OUTPUT ARGUMENT LIST:
C DATA - ARRAY CONTAINING DATA ELEMENTS
C KPDS - ARRAY CONTAINING PDS ELEMENTS. (EDITION 1)
C (1) - ID OF CENTER
C (2) - GENERATING PROCESS ID NUMBER
C (3) - GRID DEFINITION
C (4) - GDS/BMS FLAG (RIGHT ADJ COPY OF OCTET 8)
C (5) - INDICATOR OF PARAMETER
C (6) - TYPE OF LEVEL
C (7) - HEIGHT/PRESSURE , ETC OF LEVEL
C (8) - YEAR INCLUDING (CENTURY-1)
C (9) - MONTH OF YEAR
C (10) - DAY OF MONTH
C (11) - HOUR OF DAY
C (12) - MINUTE OF HOUR
C (13) - INDICATOR OF FORECAST TIME UNIT
C (14) - TIME RANGE 1
C (15) - TIME RANGE 2
C (16) - TIME RANGE FLAG
C (17) - NUMBER INCLUDED IN AVERAGE
C (18) - VERSION NR OF GRIB SPECIFICATION
C (19) - VERSION NR OF PARAMETER TABLE
C (20) - NR MISSING FROM AVERAGE/ACCUMULATION
C (21) - CENTURY OF REFERENCE TIME OF DATA
C (22) - UNITS DECIMAL SCALE FACTOR
C (23) - SUBCENTER NUMBER
C (24) - PDS BYTE 29, FOR NMC ENSEMBLE PRODUCTS
C 128 IF FORECAST FIELD ERROR
C 64 IF BIAS CORRECTED FCST FIELD
C 32 IF SMOOTHED FIELD
C WARNING: CAN BE COMBINATION OF MORE THAN 1
C (25) - PDS BYTE 30, NOT USED
C (26-35) - RESERVED
C (36-N) - CONSECUTIVE BYTES EXTRACTED FROM PROGRAM
C DEFINITION SECTION (PDS) OF GRIB MESSAGE
C KGDS - ARRAY CONTAINING GDS ELEMENTS.
C (1) - DATA REPRESENTATION TYPE
C (19) - NUMBER OF VERTICAL COORDINATE PARAMETERS
C (20) - OCTET NUMBER OF THE LIST OF VERTICAL COORDINATE
C PARAMETERS
C OR
C OCTET NUMBER OF THE LIST OF NUMBERS OF POINTS
C IN EACH ROW
C OR
C 255 IF NEITHER ARE PRESENT
C (21) - FOR GRIDS WITH PL, NUMBER OF POINTS IN GRID
C (22) - NUMBER OF WORDS IN EACH ROW
C LATITUDE/LONGITUDE GRIDS
C (2) - N(I) NR POINTS ON LATITUDE CIRCLE
C (3) - N(J) NR POINTS ON LONGITUDE MERIDIAN
C (4) - LA(1) LATITUDE OF ORIGIN
C (5) - LO(1) LONGITUDE OF ORIGIN
C (6) - RESOLUTION FLAG (RIGHT ADJ COPY OF OCTET 17)
C (7) - LA(2) LATITUDE OF EXTREME POINT
C (8) - LO(2) LONGITUDE OF EXTREME POINT
C (9) - DI LONGITUDINAL DIRECTION OF INCREMENT
C (10) - DJ LATITUDINAL DIRECTION INCREMENT
C (11) - SCANNING MODE FLAG (RIGHT ADJ COPY OF OCTET 28)
C GAUSSIAN GRIDS
C (2) - N(I) NR POINTS ON LATITUDE CIRCLE
C (3) - N(J) NR POINTS ON LONGITUDE MERIDIAN
C (4) - LA(1) LATITUDE OF ORIGIN
C (5) - LO(1) LONGITUDE OF ORIGIN
C (6) - RESOLUTION FLAG (RIGHT ADJ COPY OF OCTET 17)
C (7) - LA(2) LATITUDE OF EXTREME POINT
C (8) - LO(2) LONGITUDE OF EXTREME POINT
C (9) - DI LONGITUDINAL DIRECTION OF INCREMENT
C (10) - N - NR OF CIRCLES POLE TO EQUATOR
C (11) - SCANNING MODE FLAG (RIGHT ADJ COPY OF OCTET 28)
C (12) - NV - NR OF VERT COORD PARAMETERS
C (13) - PV - OCTET NR OF LIST OF VERT COORD PARAMETERS
C OR
C PL - LOCATION OF THE LIST OF NUMBERS OF POINTS IN
C EACH ROW (IF NO VERT COORD PARAMETERS
C ARE PRESENT
C OR
C 255 IF NEITHER ARE PRESENT
C POLAR STEREOGRAPHIC GRIDS
C (2) - N(I) NR POINTS ALONG LAT CIRCLE
C (3) - N(J) NR POINTS ALONG LON CIRCLE
C (4) - LA(1) LATITUDE OF ORIGIN
C (5) - LO(1) LONGITUDE OF ORIGIN
C (6) - RESOLUTION FLAG (RIGHT ADJ COPY OF OCTET 17)
C (7) - LOV GRID ORIENTATION
C (8) - DX - X DIRECTION INCREMENT
C (9) - DY - Y DIRECTION INCREMENT
C (10) - PROJECTION CENTER FLAG
C (11) - SCANNING MODE (RIGHT ADJ COPY OF OCTET 28)
C SPHERICAL HARMONIC COEFFICIENTS
C (2) - J PENTAGONAL RESOLUTION PARAMETER
C (3) - K " " "
C (4) - M " " "
C (5) - REPRESENTATION TYPE
C (6) - COEFFICIENT STORAGE MODE
C MERCATOR GRIDS
C (2) - N(I) NR POINTS ON LATITUDE CIRCLE
C (3) - N(J) NR POINTS ON LONGITUDE MERIDIAN
C (4) - LA(1) LATITUDE OF ORIGIN
C (5) - LO(1) LONGITUDE OF ORIGIN
C (6) - RESOLUTION FLAG (RIGHT ADJ COPY OF OCTET 17)
C (7) - LA(2) LATITUDE OF LAST GRID POINT
C (8) - LO(2) LONGITUDE OF LAST GRID POINT
C (9) - LATIT - LATITUDE OF PROJECTION INTERSECTION
C (10) - RESERVED
C (11) - SCANNING MODE FLAG (RIGHT ADJ COPY OF OCTET 28)
C (12) - LONGITUDINAL DIR GRID LENGTH
C (13) - LATITUDINAL DIR GRID LENGTH
C LAMBERT CONFORMAL GRIDS
C (2) - NX NR POINTS ALONG X-AXIS
C (3) - NY NR POINTS ALONG Y-AXIS
C (4) - LA1 LAT OF ORIGIN (LOWER LEFT)
C (5) - LO1 LON OF ORIGIN (LOWER LEFT)
C (6) - RESOLUTION (RIGHT ADJ COPY OF OCTET 17)
C (7) - LOV - ORIENTATION OF GRID
C (8) - DX - X-DIR INCREMENT
C (9) - DY - Y-DIR INCREMENT
C (10) - PROJECTION CENTER FLAG
C (11) - SCANNING MODE FLAG (RIGHT ADJ COPY OF OCTET 28)
C (12) - LATIN 1 - FIRST LAT FROM POLE OF SECANT CONE INTER
C (13) - LATIN 2 - SECOND LAT FROM POLE OF SECANT CONE INTER
C STAGGERED ARAKAWA ROTATED LAT/LON GRIDS (TYPE 203)
C (2) - N(I) NR POINTS ON LATITUDE CIRCLE
C (3) - N(J) NR POINTS ON LONGITUDE MERIDIAN
C (4) - LA(1) LATITUDE OF ORIGIN
C (5) - LO(1) LONGITUDE OF ORIGIN
C (6) - RESOLUTION FLAG (RIGHT ADJ COPY OF OCTET 17)
C (7) - LA(2) LATITUDE OF CENTER
C (8) - LO(2) LONGITUDE OF CENTER
C (9) - DI LONGITUDINAL DIRECTION OF INCREMENT
C (10) - DJ LATITUDINAL DIRECTION INCREMENT
C (11) - SCANNING MODE FLAG (RIGHT ADJ COPY OF OCTET 28)
C KBMS - BITMAP DESCRIBING LOCATION OF OUTPUT ELEMENTS.
C (ALWAYS CONSTRUCTED)
C KPTR - ARRAY CONTAINING STORAGE FOR FOLLOWING PARAMETERS
C (1) - TOTAL LENGTH OF GRIB MESSAGE
C (2) - LENGTH OF INDICATOR (SECTION 0)
C (3) - LENGTH OF PDS (SECTION 1)
C (4) - LENGTH OF GDS (SECTION 2)
C (5) - LENGTH OF BMS (SECTION 3)
C (6) - LENGTH OF BDS (SECTION 4)
C (7) - VALUE OF CURRENT BYTE
C (8) - BIT POINTER
C (9) - GRIB START BIT NR
C (10) - GRIB/GRID ELEMENT COUNT
C (11) - NR UNUSED BITS AT END OF SECTION 3
C (12) - BIT MAP FLAG (COPY OF BMS OCTETS 5,6)
C (13) - NR UNUSED BITS AT END OF SECTION 2
C (14) - BDS FLAGS (RIGHT ADJ COPY OF OCTET 4)
C (15) - NR UNUSED BITS AT END OF SECTION 4
C KRET - FLAG INDICATING QUALITY OF COMPLETION
C
C REMARKS: WHEN DECODING IS COMPLETED, DATA AT EACH GRID POINT HAS BEEN
C RETURNED IN THE UNITS SPECIFIED IN THE GRIB MANUAL.
C
C VALUES FOR RETURN FLAG (KRET)
C KRET = 0 - NORMAL RETURN, NO ERRORS
C = 1 - 'GRIB' NOT FOUND IN FIRST 100 CHARS
C = 2 - '7777' NOT IN CORRECT LOCATION
C = 3 - UNPACKED FIELD IS LARGER THAN 260000
C = 4 - GDS/ GRID NOT ONE OF CURRENTLY ACCEPTED VALUES
C = 5 - GRID NOT CURRENTLY AVAIL FOR CENTER INDICATED
C = 8 - TEMP GDS INDICATED, BUT GDS FLAG IS OFF
C = 9 - GDS INDICATES SIZE MISMATCH WITH STD GRID
C =10 - INCORRECT CENTER INDICATOR
C =11 - BINARY DATA SECTION (BDS) NOT COMPLETELY PROCESSED.
C PROGRAM IS NOT SET TO PROCESS FLAG COMBINATIONS
C SHOWN IN OCTETS 4 AND 14.
C =12 - BINARY DATA SECTION (BDS) NOT COMPLETELY PROCESSED.
C PROGRAM IS NOT SET TO PROCESS FLAG COMBINATIONS
C
C SUBPROGRAM CAN BE CALLED FROM A MULTIPROCESSING ENVIRONMENT.
C
C ATTRIBUTES:
C LANGUAGE: FORTRAN 90
C
C$$$
C 4 AUG 1988
C W3FI63
C
C
C GRIB UNPACKING ROUTINE
C
C
C THIS ROUTINE WILL UNPACK A 'GRIB' FIELD TO THE EXACT GRID
C TYPE SPECIFIED IN THE MESSAGE, RETURN A BIT MAP AND MAKE THE
C VALUES OF THE PRODUCT DEFINITION SEC (PDS) AND THE GRID
C DESCRIPTION SEC (GDS) AVAILABLE IN RETURN ARRAYS.
C SEE "GRIB - THE WMO FORMAT FOR THE STORAGE OF WEATHER PRODUCT
C INFORMATION AND THE EXCHANGE OF WEATHER PRODUCT MESSAGES IN
C GRIDDED BINARY FORM" DATED JULY 1, 1988 BY JOHN D. STACKPOLE
C DOC, NOAA, NWS, NATIONAL METEOROLOGICAL CENTER.
C
C THE CALL TO THE GRIB UNPACKING ROUTINE IS AS FOLLOWS:
C
C CALL W3FI63(MSGA,KPDS,KGDS,LBMS,DATA,KPTR,KRET)
C
C INPUT:
C
C MSGA = CONTAINS THE GRIB MESSAGE TO BE UNPACKED. CHARACTERS
C "GRIB" MAY BEGIN ANYWHERE WITHIN FIRST 100 BYTES.
C
C OUTPUT:
C
C KPDS(100) INTEGER*4
C ARRAY TO CONTAIN THE ELEMENTS OF THE PRODUCT
C DEFINITION SEC .
C (VERSION 1)
C KPDS(1) - ID OF CENTER
C KPDS(2) - MODEL IDENTIFICATION (SEE "GRIB" TABLE 1)
C KPDS(3) - GRID IDENTIFICATION (SEE "GRIB" TABLE 2)
C KPDS(4) - GDS/BMS FLAG
C BIT DEFINITION
C 25 0 - GDS OMITTED
C 1 - GDS INCLUDED
C 26 0 - BMS OMITTED
C 1 - BMS INCLUDED
C NOTE:- LEFTMOST BIT = 1,
C RIGHTMOST BIT = 32
C KPDS(5) - INDICATOR OF PARAMETER (SEE "GRIB" TABLE 5)
C KPDS(6) - TYPE OF LEVEL (SEE "GRIB" TABLES 6 & 7)
C KPDS(7) - HEIGHT,PRESSURE,ETC OF LEVEL
C KPDS(8) - YEAR INCLUDING CENTURY
C KPDS(9) - MONTH OF YEAR
C KPDS(10) - DAY OF MONTH
C KPDS(11) - HOUR OF DAY
C KPDS(12) - MINUTE OF HOUR
C KPDS(13) - INDICATOR OF FORECAST TIME UNIT (SEE "GRIB"
C TABLE 8)
C KPDS(14) - TIME 1 (SEE "GRIB" TABLE 8A)
C KPDS(15) - TIME 2 (SEE "GRIB" TABLE 8A)
C KPDS(16) - TIME RANGE INDICATOR (SEE "GRIB" TABLE 8A)
C KPDS(17) - NUMBER INCLUDED IN AVERAGE
C KPDS(18) - EDITION NR OF GRIB SPECIFICATION
C KPDS(19) - VERSION NR OF PARAMETER TABLE
C
C KGDS(13) INTEGER*4
C ARRAY CONTAINING GDS ELEMENTS.
C
C KGDS(1) - DATA REPRESENTATION TYPE
C
C LATITUDE/LONGITUDE GRIDS (SEE "GRIB" TABLE 10)
C KGDS(2) - N(I) NUMBER OF POINTS ON LATITUDE
C CIRCLE
C KGDS(3) - N(J) NUMBER OF POINTS ON LONGITUDE
C CIRCLE
C KGDS(4) - LA(1) LATITUDE OF ORIGIN
C KGDS(5) - LO(1) LONGITUDE OF ORIGIN
C KGDS(6) - RESOLUTION FLAG
C BIT MEANING
C 25 0 - DIRECTION INCREMENTS NOT
C GIVEN
C 1 - DIRECTION INCREMENTS GIVEN
C KGDS(7) - LA(2) LATITUDE OF EXTREME POINT
C KGDS(8) - LO(2) LONGITUDE OF EXTREME POINT
C KGDS(9) - DI LONGITUDINAL DIRECTION INCREMENT
C KGDS(10) - REGULAR LAT/LON GRID
C DJ - LATITUDINAL DIRECTION
C INCREMENT
C GAUSSIAN GRID
C N - NUMBER OF LATITUDE CIRCLES
C BETWEEN A POLE AND THE EQUATOR
C KGDS(11) - SCANNING MODE FLAG
C BIT MEANING
C 25 0 - POINTS ALONG A LATITUDE
C SCAN FROM WEST TO EAST
C 1 - POINTS ALONG A LATITUDE
C SCAN FROM EAST TO WEST
C 26 0 - POINTS ALONG A MERIDIAN
C SCAN FROM NORTH TO SOUTH
C 1 - POINTS ALONG A MERIDIAN
C SCAN FROM SOUTH TO NORTH
C 27 0 - POINTS SCAN FIRST ALONG
C CIRCLES OF LATITUDE, THEN
C ALONG MERIDIANS
C (FORTRAN: (I,J))
C 1 - POINTS SCAN FIRST ALONG
C MERIDIANS THEN ALONG
C CIRCLES OF LATITUDE
C (FORTRAN: (J,I))
C
C POLAR STEREOGRAPHIC GRIDS (SEE GRIB TABLE 12)
C KGDS(2) - N(I) NR POINTS ALONG LAT CIRCLE
C KGDS(3) - N(J) NR POINTS ALONG LON CIRCLE
C KGDS(4) - LA(1) LATITUDE OF ORIGIN
C KGDS(5) - LO(1) LONGITUDE OF ORIGIN
C KGDS(6) - RESERVED
C KGDS(7) - LOV GRID ORIENTATION
C KGDS(8) - DX - X DIRECTION INCREMENT
C KGDS(9) - DY - Y DIRECTION INCREMENT
C KGDS(10) - PROJECTION CENTER FLAG
C KGDS(11) - SCANNING MODE
C
C SPHERICAL HARMONIC COEFFICIENTS (SEE "GRIB" TABLE 14)
C KGDS(2) - J PENTAGONAL RESOLUTION PARAMETER
C KGDS(3) - K PENTAGONAL RESOLUTION PARAMETER
C KGDS(4) - M PENTAGONAL RESOLUTION PARAMETER
C KGDS(5) - REPRESENTATION TYPE
C KGDS(6) - COEFFICIENT STORAGE MODE
C
C MERCATOR GRIDS
C KGDS(2) - N(I) NR POINTS ON LATITUDE CIRCLE
C KGDS(3) - N(J) NR POINTS ON LONGITUDE MERIDIAN
C KGDS(4) - LA(1) LATITUDE OF ORIGIN
C KGDS(5) - LO(1) LONGITUDE OF ORIGIN
C KGDS(6) - RESOLUTION FLAG
C KGDS(7) - LA(2) LATITUDE OF LAST GRID POINT
C KGDS(8) - LO(2) LONGITUDE OF LAST GRID POINT
C KGDS(9) - LATIN - LATITUDE OF PROJECTION INTERSECTION
C KGDS(10) - RESERVED
C KGDS(11) - SCANNING MODE FLAG
C KGDS(12) - LONGITUDINAL DIR GRID LENGTH
C KGDS(13) - LATITUDINAL DIR GRID LENGTH
C LAMBERT CONFORMAL GRIDS
C KGDS(2) - NX NR POINTS ALONG X-AXIS
C KGDS(3) - NY NR POINTS ALONG Y-AXIS
C KGDS(4) - LA1 LAT OF ORIGIN (LOWER LEFT)
C KGDS(5) - LO1 LON OF ORIGIN (LOWER LEFT)
C KGDS(6) - RESOLUTION (RIGHT ADJ COPY OF OCTET 17)
C KGDS(7) - LOV - ORIENTATION OF GRID
C KGDS(8) - DX - X-DIR INCREMENT
C KGDS(9) - DY - Y-DIR INCREMENT
C KGDS(10) - PROJECTION CENTER FLAG
C KGDS(11) - SCANNING MODE FLAG
C KGDS(12) - LATIN 1 - FIRST LAT FROM POLE OF
C SECANT CONE INTERSECTION
C KGDS(13) - LATIN 2 - SECOND LAT FROM POLE OF
C SECANT CONE INTERSECTION
C
C LBMS(*) LOGICAL
C ARRAY TO CONTAIN THE BIT MAP DESCRIBING THE
C PLACEMENT OF DATA IN THE OUTPUT ARRAY. IF A
C BIT MAP IS NOT INCLUDED IN THE SOURCE MESSAGE,
C ONE WILL BE GENERATED AUTOMATICALLY BY THE
C UNPACKING ROUTINE.
C
C
C DATA(*) REAL*4
C THIS ARRAY WILL CONTAIN THE UNPACKED DATA POINTS.
C
C NOTE:- 65160 IS MAXIMUN FIELD SIZE ALLOWABLE
C
C KPTR(10) INTEGER*4
C ARRAY CONTAINING STORAGE FOR THE FOLLOWING
C PARAMETERS.
C
C (1) - UNUSED
C (2) - UNUSED
C (3) - LENGTH OF PDS (IN BYTES)
C (4) - LENGTH OF GDS (IN BYTES)
C (5) - LENGTH OF BMS (IN BYTES)
C (6) - LENGTH OF BDS (IN BYTES)
C (7) - USED BY UNPACKING ROUTINE
C (8) - NUMBER OF DATA POINTS FOR GRID
C (9) - "GRIB" CHARACTERS START IN BYTE NUMBER
C (10) - USED BY UNPACKING ROUTINE
C
C
C KRET INTEGER*4
C THIS VARIABLE WILL CONTAIN THE RETURN INDICATOR.
C
C 0 - NO ERRORS DETECTED.
C
C 1 - 'GRIB' NOT FOUND IN FIRST 100
C CHARACTERS.
C
C 2 - '7777' NOT FOUND, EITHER MISSING OR
C TOTAL OF SEC COUNTS OF INDIVIDUAL
C SECTIONS IS INCORRECT.
C
C 3 - UNPACKED FIELD IS LARGER THAN 65160.
C
C 4 - IN GDS, DATA REPRESENTATION TYPE
C NOT ONE OF THE CURRENTLY ACCEPTABLE
C VALUES. SEE "GRIB" TABLE 9. VALUE
C OF INCORRECT TYPE RETURNED IN KGDS(1).
C
C 5 - GRID INDICATED IN KPDS(3) IS NOT
C AVAILABLE FOR THE CENTER INDICATED IN
C KPDS(1) AND NO GDS SENT.
C
C 7 - EDITION INDICATED IN KPDS(18) HAS NOT
C YET BEEN INCLUDED IN THE DECODER.
C
C 8 - GRID IDENTIFICATION = 255 (NOT STANDARD
C GRID) BUT FLAG INDICATING PRESENCE OF
C GDS IS TURNED OFF. NO METHOD OF
C GENERATING PROPER GRID.
C
C 9 - PRODUCT OF KGDS(2) AND KGDS(3) DOES NOT
C MATCH STANDARD NUMBER OF POINTS FOR THIS
C GRID (FOR OTHER THAN SPECTRALS). THIS
C WILL OCCUR ONLY IF THE GRID.
C IDENTIFICATION, KPDS(3), AND A
C TRANSMITTED GDS ARE INCONSISTENT.
C
C 10 - CENTER INDICATOR WAS NOT ONE INDICATED
C IN "GRIB" TABLE 1. PLEASE CONTACT AD
C PRODUCTION MANAGEMENT BRANCH (W/NMC42)
C IF THIS ERROR IS ENCOUNTERED.
C
C 11 - BINARY DATA SECTION (BDS) NOT COMPLETELY
C PROCESSED. PROGRAM IS NOT SET TO PROCESS
C FLAG COMBINATIONS AS SHOWN IN
C OCTETS 4 AND 14.
C
C
C LIST OF TEXT MESSAGES FROM CODE
C
C
C W3FI63/FI632
C
C 'HAVE ENCOUNTERED A NEW GRID FOR NMC, PLEASE NOTIFY
C AUTOMATION DIVISION, PRODUCTION MANAGEMENT BRANCH
C (W/NMC42)'
C
C 'HAVE ENCOUNTERED A NEW GRID FOR ECMWF, PLEASE NOTIFY
C AUTOMATION DIVISION, PRODUCTION MANAGEMENT BRANCH
C (W/NMC42)'
C
C 'HAVE ENCOUNTERED A NEW GRID FOR U.K. METEOROLOGICAL
C OFFICE, BRACKNELL. PLEASE NOTIFY AUTOMATION DIVISION,
C PRODUCTION MANAGEMENT BRANCH (W/NMC42)'
C
C 'HAVE ENCOUNTERED A NEW GRID FOR FNOC, PLEASE NOTIFY
C AUTOMATION DIVISION, PRODUCTION MANAGEMENT BRANCH
C (W/NMC42)'
C
C
C W3FI63/FI633
C
C 'POLAR STEREO PROCESSING NOT AVAILABLE' *
C
C W3FI63/FI634
C
C 'WARNING - BIT MAP MAY NOT BE ASSOCIATED WITH SPHERICAL
C COEFFICIENTS'
C
C
C W3FI63/FI637
C
C 'NO CURRENT LISTING OF FNOC GRIDS' *
C
C
C * WILL BE AVAILABLE IN NEXT UPDATE
C ***************************************************************
C
C INCOMING MESSAGE HOLDER
CHARACTER*1 MSGA(*)
C BIT MAP
LOGICAL*1 KBMS(*)
C
C ELEMENTS OF PRODUCT DESCRIPTION SEC (PDS)
INTEGER KPDS(*)
C ELEMENTS OF GRID DESCRIPTION SEC (PDS)
INTEGER KGDS(*)
C
C CONTAINER FOR GRIB GRID
REAL DATA(*)
C
C ARRAY OF POINTERS AND COUNTERS
INTEGER KPTR(*)
C
C *****************************************************************
INTEGER JSGN,JEXP,IFR,NPTS
REAL REALKK,FVAL1,FDIFF1
C
C ================================= RCS keyword statements ==========
CHARACTER*68 RCSKW1,RCSKW2
DATA RCSKW1,RCSKW2 / '
.$Source: /fs/hseb/ob72/wfo_rfc/precip_proc/source/gribit/src/RCS/w3fi63.f,v $
. $', '
.$Id: w3fi63.f,v 1.1 2006/05/03 13:44:00 gsood Exp $
. $' /
C ===================================================================
C
C *****************************************************************
C 1.0 LOCATE BEGINNING OF 'GRIB' MESSAGE
C FIND 'GRIB' CHARACTERS
C 2.0 USE COUNTS IN EACH DESCRIPTION SEC TO DETERMINE
C IF '7777' IS IN PROPER PLACE.
C 3.0 PARSE PRODUCT DEFINITION SECTION.
C 4.0 PARSE GRID DESCRIPTION SEC (IF INCLUDED)
C 5.0 PARSE BIT MAP SEC (IF INCLUDED)
C 6.0 USING INFORMATION FROM PRODUCT DEFINITION, GRID
C DESCRIPTION, AND BIT MAP SECTIONS.. EXTRACT
C DATA AND PLACE INTO PROPER ARRAY.
C *******************************************************************
C
C MAIN DRIVER
C
C *******************************************************************
KPTR(10) = 0
C SEE IF PROPER 'GRIB' KEY EXISTS, THEN
C USING SEC COUNTS, DETERMINE IF '7777'
C IS IN THE PROPER LOCATION
C
CALL FI631(MSGA,KPTR,KPDS,KRET)
IF(KRET.NE.0) THEN
GO TO 900
END IF
C PRINT *,'FI631 KPTR',(KPTR(I),I=1,16)
C
C PARSE PARAMETERS FROM PRODUCT DESCRIPTION SECTION
C
CALL FI632(MSGA,KPTR,KPDS,KRET)
IF(KRET.NE.0) THEN
GO TO 900
END IF
C PRINT *,'FI632 KPTR',(KPTR(I),I=1,16)
C
C IF AVAILABLE, EXTRACT NEW GRID DESCRIPTION
C
IF (IAND(KPDS(4),128).NE.0) THEN
CALL FI633(MSGA,KPTR,KGDS,KRET)
IF(KRET.NE.0) THEN
GO TO 900
END IF
C PRINT *,'FI633 KPTR',(KPTR(I),I=1,16)
END IF
C
C EXTRACT OR GENERATE BIT MAP
C
CALL FI634(MSGA,KPTR,KPDS,KGDS,KBMS,KRET)
IF (KRET.NE.0) THEN
IF (KRET.NE.9) THEN
GO TO 900
END IF
END IF
C PRINT *,'FI634 KPTR',(KPTR(I),I=1,16)
C
C USING INFORMATION FROM PDS, BMS AND BIT DATA SEC ,
C EXTRACT AND SAVE IN GRIB GRID, ALL DATA ENTRIES.
C
IF (KPDS(18).EQ.1) THEN
CALL FI635(MSGA,KPTR,KPDS,KGDS,KBMS,DATA,KRET)
IF (KPTR(3).EQ.50) THEN
C
C PDS EQUAL 50 BYTES
C THEREFORE SOMETHING SPECIAL IS GOING ON
C
C IN THIS CASE 2ND DIFFERENCE PACKING
C NEEDS TO BE UNDONE.
C
C EXTRACT FIRST VALUE FROM BYTE 41-44 PDS
C KPTR(9) CONTAINS OFFSET TO START OF
C GRIB MESSAGE.
C EXTRACT FIRST FIRST-DIFFERENCE FROM BYTES 45-48 PDS
C
C AND EXTRACT SCALE FACTOR (E) TO UNDO 2**E
C THAT WAS APPLIED PRIOR TO 2ND ORDER PACKING
C AND PLACED IN PDS BYTES 49-51
C FACTOR IS A SIGNED TWO BYTE INTEGER
C
C ALSO NEED THE DECIMAL SCALING FROM PDS(27-28)
C (AVAILABLE IN KPDS(22) FROM UNPACKER)
C TO UNDO THE DECIMAL SCALING APPLIED TO THE
C SECOND DIFFERENCES DURING UNPACKING.
C SECOND DIFFS ALWAYS PACKED WITH 0 DECIMAL SCALE
C BUT UNPACKER DOESNT KNOW THAT.
C
C CALL GBYTE (MSGA,FVAL1,KPTR(9)+384,32)
C
C
C THE NEXT CODE WILL CONVERT THE IBM370 FOATING POINT
C TO THE FLOATING POINT USED ON YOUR MACHINE.
C
call gbytec(MSGA,JSGN,KPTR(9)+384,1)
call gbytec(MSGA,JEXP,KPTR(9)+385,7)
call gbytec(MSGA,IFR,KPTR(9)+392,24)
C
IF (IFR.EQ.0) THEN
REALKK = 0.0
ELSE IF (JEXP.EQ.0.AND.IFR.EQ.0) THEN
REALKK = 0.0
ELSE
REALKK = FLOAT(IFR) * 16.0 ** (JEXP - 64 - 6)
IF (JSGN.NE.0) REALKK = -REALKK
END IF
FVAL1 = REALKK
C
C CALL GBYTE (MSGA,FDIFF1,KPTR(9)+416,32)
C (REPLACED BY FOLLOWING EXTRACTION)
C
C THE NEXT CODE WILL CONVERT THE IBM370 FOATING POINT
C TO THE FLOATING POINT USED ON YOUR MACHINE.
C
call gbytec(MSGA,JSGN,KPTR(9)+416,1)
call gbytec(MSGA,JEXP,KPTR(9)+417,7)
call gbytec(MSGA,IFR,KPTR(9)+424,24)
C
IF (IFR.EQ.0) THEN
REALKK = 0.0
ELSE IF (JEXP.EQ.0.AND.IFR.EQ.0) THEN
REALKK = 0.0
ELSE
REALKK = FLOAT(IFR) * 16.0 ** (JEXP - 64 - 6)
IF (JSGN.NE.0) REALKK = -REALKK
END IF
FDIFF1 = REALKK
C
CALL GBYTEC (MSGA,ISIGN,KPTR(9)+448,1)
CALL GBYTEC (MSGA,ISCAL2,KPTR(9)+449,15)
IF(ISIGN.GT.0) THEN
ISCAL2 = - ISCAL2
ENDIF
C PRINT *,'DELTA POINT 1-',FVAL1
C PRINT *,'DELTA POINT 2-',FDIFF1
C PRINT *,'DELTA POINT 3-',ISCAL2
NPTS = KPTR(10)
C WRITE (6,FMT='('' 2ND DIFF POINTS IN FIELD = '',/,
C & 10(3X,10F12.2,/))') (DATA(I),I=1,NPTS)
C PRINT *,'DELTA POINT 4-',KPDS(22)
CALL W3FI83 (DATA,NPTS,FVAL1,FDIFF1,
& ISCAL2,KPDS(22),KPDS,KGDS)
C WRITE (6,FMT='('' 2ND DIFF EXPANDED POINTS IN FIELD = '',
C & /,10(3X,10F12.2,/))') (DATA(I),I=1,NPTS)
C WRITE (6,FMT='('' END OF ARRAY IN FIELD = '',/,
C & 10(3X,10F12.2,/))') (DATA(I),I=NPTS-5,NPTS)
END IF
ELSE
C PRINT *,'FI635 NOT PROGRAMMED FOR EDITION NR',KPDS(18)
KRET = 7
END IF
C
900 RETURN
END
SUBROUTINE FI631(MSGA,KPTR,KPDS,KRET)
C$$$ SUBPROGRAM DOCUMENTATION BLOCK
C . . . .
C SUBPROGRAM: FI631 FIND 'GRIB' CHARS & RESET POINTERS
C PRGMMR: BILL CAVANAUGH ORG: W/NMC42 DATE: 91-09-13
C
C ABSTRACT: FIND 'GRIB; CHARACTERS AND SET POINTERS TO THE NEXT
C BYTE FOLLOWING 'GRIB'. IF THEY EXIST EXTRACT COUNTS FROM GDS AND
C BMS. EXTRACT COUNT FROM BDS. DETERMINE IF SUM OF COUNTS ACTUALLY
C PLACES TERMINATOR '7777' AT THE CORRECT LOCATION.
C
C PROGRAM HISTORY LOG:
C 91-09-13 CAVANAUGH
C 95-10-31 IREDELL REMOVED SAVES AND PRINTS
C
C USAGE: CALL FI631(MSGA,KPTR,KPDS,KRET)
C INPUT ARGUMENT LIST:
C MSGA - GRIB FIELD - "GRIB" THRU "7777"
C KPTR - ARRAY CONTAINING STORAGE FOR FOLLOWING PARAMETERS
C (1) - TOTAL LENGTH OF GRIB MESSAGE
C (2) - LENGTH OF INDICATOR (SECTION 0)
C (3) - LENGTH OF PDS (SECTION 1)
C (4) - LENGTH OF GDS (SECTION 2)
C (5) - LENGTH OF BMS (SECTION 3)
C (6) - LENGTH OF BDS (SECTION 4)
C (7) - VALUE OF CURRENT BYTE
C (8) - BIT POINTER
C (9) - GRIB START BIT NR
C (10) - GRIB/GRID ELEMENT COUNT
C (11) - NR UNUSED BITS AT END OF SECTION 3
C (12) - BIT MAP FLAG
C (13) - NR UNUSED BITS AT END OF SECTION 2
C (14) - BDS FLAGS
C (15) - NR UNUSED BITS AT END OF SECTION 4
C
C OUTPUT ARGUMENT LIST: (INCLUDING WORK ARRAYS)
C KPDS - ARRAY CONTAINING PDS ELEMENTS.
C (1) - ID OF CENTER
C (2) - MODEL IDENTIFICATION
C (3) - GRID IDENTIFICATION
C (4) - GDS/BMS FLAG
C (5) - INDICATOR OF PARAMETER
C (6) - TYPE OF LEVEL
C (7) - HEIGHT/PRESSURE , ETC OF LEVEL
C (8) - YEAR OF CENTURY
C (9) - MONTH OF YEAR
C (10) - DAY OF MONTH
C (11) - HOUR OF DAY
C (12) - MINUTE OF HOUR
C (13) - INDICATOR OF FORECAST TIME UNIT
C (14) - TIME RANGE 1
C (15) - TIME RANGE 2
C (16) - TIME RANGE FLAG
C (17) - NUMBER INCLUDED IN AVERAGE
C KPTR - SEE INPUT LIST
C KRET - ERROR RETURN
C
C REMARKS:
C ERROR RETURNS
C KRET = 1 - NO 'GRIB'
C 2 - NO '7777' OR MISLOCATED (BY COUNTS)
C
C SUBPROGRAM CAN BE CALLED FROM A MULTIPROCESSING ENVIRONMENT.
C
C ATTRIBUTES:
C LANGUAGE: FORTRAN 77
C MACHINE: HDS9000
C
C$$$
C
C INCOMING MESSAGE HOLDER
CHARACTER*1 MSGA(*)
C ARRAY OF POINTERS AND COUNTERS
INTEGER KPTR(*)
C PRODUCT DESCRIPTION SECTION DATA.
INTEGER KPDS(*)
C
INTEGER KRET
C
C ******************************************************************
KRET = 0
C ------------------- FIND 'GRIB' KEY
DO 50 I = 0, 839, 8
CALL GBYTEC (MSGA,MGRIB,I,32)
IF (MGRIB.EQ.1196575042) THEN
KPTR(9) = I
GO TO 60
END IF
50 CONTINUE
KRET = 1
RETURN
60 CONTINUE
C -------------FOUND 'GRIB'
C SKIP GRIB CHARACTERS
C PRINT *,'FI631 GRIB AT',I
KPTR(8) = KPTR(9) + 32
CALL GBYTEC (MSGA,ITOTAL,KPTR(8),24)
C HAVE LIFTED WHAT MAY BE A MSG TOTAL BYTE COUNT
IPOINT = KPTR(9) + ITOTAL * 8 - 32
CALL GBYTEC (MSGA,I7777,IPOINT,32)
IF (I7777.EQ.926365495) THEN
C HAVE FOUND END OF MESSAGE '7777' IN PROPER LOCATION
C MARK AND PROCESS AS GRIB VERSION 1 OR HIGHER
C PRINT *,'FI631 7777 AT',IPOINT
KPTR(8) = KPTR(8) + 24
KPTR(1) = ITOTAL
KPTR(2) = 8
CALL GBYTEC (MSGA,KPDS(18),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
ELSE
C CANNOT FIND END OF GRIB EDITION 1 MESSAGE
KRET = 2
RETURN
END IF
C ------------------- PROCESS SECTION 1
C EXTRACT COUNT FROM PDS
C PRINT *,'START OF PDS',KPTR(8)
CALL GBYTEC (MSGA,KPTR(3),KPTR(8),24)
LOOK = KPTR(8) + 56
C EXTRACT GDS/BMS FLAG
CALL GBYTEC (MSGA,KPDS(4),LOOK,8)
KPTR(8) = KPTR(8) + KPTR(3) * 8
C PRINT *,'START OF GDS',KPTR(8)
IF (IAND(KPDS(4),128).NE.0) THEN
C EXTRACT COUNT FROM GDS
CALL GBYTEC (MSGA,KPTR(4),KPTR(8),24)
KPTR(8) = KPTR(8) + KPTR(4) * 8
ELSE
KPTR(4) = 0
END IF
C PRINT *,'START OF BMS',KPTR(8)
IF (IAND(KPDS(4),64).NE.0) THEN
C EXTRACT COUNT FROM BMS
CALL GBYTEC (MSGA,KPTR(5),KPTR(8),24)
ELSE
KPTR(5) = 0
END IF
KPTR(8) = KPTR(8) + KPTR(5) * 8
C PRINT *,'START OF BDS',KPTR(8)
C EXTRACT COUNT FROM BDS
CALL GBYTEC (MSGA,KPTR(6),KPTR(8),24)
C --------------- TEST FOR '7777'
C PRINT *,(KPTR(KJ),KJ=1,10)
KPTR(8) = KPTR(8) + KPTR(6) * 8
C EXTRACT FOUR BYTES FROM THIS LOCATION
C PRINT *,'FI631 LOOKING FOR 7777 AT',KPTR(8)
CALL GBYTEC (MSGA,K7777,KPTR(8),32)
MATCH = KPTR(2) + KPTR(3) + KPTR(4) + KPTR(5) + KPTR(6) + 4
IF (K7777.NE.926365495.OR.MATCH.NE.KPTR(1)) THEN
KRET = 2
ELSE
C PRINT *,'FI631 7777 AT',KPTR(8)
IF (KPDS(18).EQ.0) THEN
KPTR(1) = KPTR(2) + KPTR(3) + KPTR(4) + KPTR(5) +
* KPTR(6) + 4
END IF
END IF
C PRINT *,'KPTR',(KPTR(I),I=1,16)
RETURN
END
SUBROUTINE FI632(MSGA,KPTR,KPDS,KRET)
C$$$ SUBPROGRAM DOCUMENTATION BLOCK
C . . . .
C SUBPROGRAM: FI632 GATHER INFO FROM PRODUCT DEFINITION SEC
C PRGMMR: BILL CAVANAUGH ORG: W/NMC42 DATE: 91-09-13
C
C ABSTRACT: EXTRACT INFORMATION FROM THE PRODUCT DESCRIPTION
C SEC , AND GENERATE LABEL INFORMATION TO PERMIT STORAGE
C IN OFFICE NOTE 84 FORMAT.
C
C PROGRAM HISTORY LOG:
C 91-09-13 CAVANAUGH
C 93-12-08 CAVANAUGH CORRECTED TEST FOR EDITION NUMBER INSTEAD
C OF VERSION NUMBER
C 95-10-31 IREDELL REMOVED SAVES AND PRINTS
C 99-01-20 BALDWIN MODIFIED TO HANDLE GRID 237
C
C USAGE: CALL FI632(MSGA,KPTR,KPDS,KRET)
C INPUT ARGUMENT LIST:
C MSGA - ARRAY CONTAINING GRIB MESSAGE
C KPTR - ARRAY CONTAINING STORAGE FOR FOLLOWING PARAMETERS
C (1) - TOTAL LENGTH OF GRIB MESSAGE
C (2) - LENGTH OF INDICATOR (SECTION 0)
C (3) - LENGTH OF PDS (SECTION 1)
C (4) - LENGTH OF GDS (SECTION 2)
C (5) - LENGTH OF BMS (SECTION 3)
C (6) - LENGTH OF BDS (SECTION 4)
C (7) - VALUE OF CURRENT BYTE
C (8) - BIT POINTER
C (9) - GRIB START BIT NR
C (10) - GRIB/GRID ELEMENT COUNT
C (11) - NR UNUSED BITS AT END OF SECTION 3
C (12) - BIT MAP FLAG
C (13) - NR UNUSED BITS AT END OF SECTION 2
C (14) - BDS FLAGS
C (15) - NR UNUSED BITS AT END OF SECTION 4
C
C OUTPUT ARGUMENT LIST: (INCLUDING WORK ARRAYS)
C KPDS - ARRAY CONTAINING PDS ELEMENTS.
C (1) - ID OF CENTER
C (2) - MODEL IDENTIFICATION
C (3) - GRID IDENTIFICATION
C (4) - GDS/BMS FLAG
C (5) - INDICATOR OF PARAMETER
C (6) - TYPE OF LEVEL
C (7) - HEIGHT/PRESSURE , ETC OF LEVEL
C (8) - YEAR OF CENTURY
C (9) - MONTH OF YEAR
C (10) - DAY OF MONTH
C (11) - HOUR OF DAY
C (12) - MINUTE OF HOUR
C (13) - INDICATOR OF FORECAST TIME UNIT
C (14) - TIME RANGE 1
C (15) - TIME RANGE 2
C (16) - TIME RANGE FLAG
C (17) - NUMBER INCLUDED IN AVERAGE
C (18) -
C (19) -
C (20) - NUMBER MISSING FROM AVGS/ACCUMULATIONS
C (21) - CENTURY
C (22) - UNITS DECIMAL SCALE FACTOR
C (23) - SUBCENTER
C KPTR - ARRAY CONTAINING STORAGE FOR FOLLOWING PARAMETERS
C SEE INPUT LIST
C KRET - ERROR RETURN
C
C REMARKS:
C ERROR RETURN = 0 - NO ERRORS
C = 8 - TEMP GDS INDICATED, BUT NO GDS
C
C SUBPROGRAM CAN BE CALLED FROM A MULTIPROCESSING ENVIRONMENT.
C
C ATTRIBUTES:
C LANGUAGE: FORTRAN 77
C MACHINE: HDS9000
C
C$$$
C
C INCOMING MESSAGE HOLDER
CHARACTER*1 MSGA(*)
C
C ARRAY OF POINTERS AND COUNTERS
INTEGER KPTR(*)
C PRODUCT DESCRIPTION SECTION ENTRIES
INTEGER KPDS(*)
C
INTEGER KRET
KRET=0
C ------------------- PROCESS SECTION 1
KPTR(8) = KPTR(9) + KPTR(2) * 8 + 24
C BYTE 4
C PARAMETER TABLE VERSION NR
CALL GBYTEC (MSGA,KPDS(19),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C BYTE 5 IDENTIFICATION OF CENTER
CALL GBYTEC (MSGA,KPDS(1),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C BYTE 6
C GET GENERATING PROCESS ID NR
CALL GBYTEC (MSGA,KPDS(2),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C BYTE 7
C GRID DEFINITION
CALL GBYTEC (MSGA,KPDS(3),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C BYTE 8
C GDS/BMS FLAGS
C CALL GBYTEC (MSGA,KPDS(4),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C BYTE 9
C INDICATOR OF PARAMETER
CALL GBYTEC (MSGA,KPDS(5),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C BYTE 10
C TYPE OF LEVEL
CALL GBYTEC (MSGA,KPDS(6),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C BYTE 11,12
C HEIGHT/PRESSURE
CALL GBYTEC (MSGA,KPDS(7),KPTR(8),16)
KPTR(8) = KPTR(8) + 16
C BYTE 13
C YEAR OF CENTURY
CALL GBYTEC (MSGA,KPDS(8),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C BYTE 14
C MONTH OF YEAR
CALL GBYTEC (MSGA,KPDS(9),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C BYTE 15
C DAY OF MONTH
CALL GBYTEC (MSGA,KPDS(10),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C BYTE 16
C HOUR OF DAY
CALL GBYTEC (MSGA,KPDS(11),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C BYTE 17
C MINUTE
CALL GBYTEC (MSGA,KPDS(12),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C BYTE 18
C INDICATOR TIME UNIT RANGE
CALL GBYTEC (MSGA,KPDS(13),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C BYTE 19
C P1 - PERIOD OF TIME
CALL GBYTEC (MSGA,KPDS(14),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C BYTE 20
C P2 - PERIOD OF TIME
CALL GBYTEC (MSGA,KPDS(15),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C BYTE 21
C TIME RANGE INDICATOR
CALL GBYTEC (MSGA,KPDS(16),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C
C IF TIME RANGE INDICATOR IS 10, P1 IS PACKED IN
C PDS BYTES 19-20
C
IF (KPDS(16).EQ.10) THEN
KPDS(14) = KPDS(14) * 256 + KPDS(15)
KPDS(15) = 0
END IF
C BYTE 22,23
C NUMBER INCLUDED IN AVERAGE
CALL GBYTEC (MSGA,KPDS(17),KPTR(8),16)
KPTR(8) = KPTR(8) + 16
C BYTE 24
C NUMBER MISSING FROM AVERAGES/ACCUMULATIONS
CALL GBYTEC (MSGA,KPDS(20),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C BYTE 25
C IDENTIFICATION OF CENTURY
CALL GBYTEC (MSGA,KPDS(21),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
IF (KPTR(3).GT.25) THEN
C BYTE 26 SUB CENTER NUMBER
CALL GBYTEC (MSGA,KPDS(23),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
IF (KPTR(3).GE.28) THEN
C BYTE 27-28
C UNITS DECIMAL SCALE FACTOR
CALL GBYTEC (MSGA,ISIGN,KPTR(8),1)
KPTR(8) = KPTR(8) + 1
CALL GBYTEC (MSGA,IDEC,KPTR(8),15)
KPTR(8) = KPTR(8) + 15
IF (ISIGN.GT.0) THEN
KPDS(22) = - IDEC
ELSE
KPDS(22) = IDEC
END IF
ISIZ = KPTR(3) - 28
IF (ISIZ.LE.12) THEN
C BYTE 29
CALL GBYTEC (MSGA,KPDS(24),KPTR(8)+8,8)
C BYTE 30
CALL GBYTEC (MSGA,KPDS(25),KPTR(8)+16,8)
C BYTES 31-40 CURRENTLY RESERVED FOR FUTURE USE
KPTR(8) = KPTR(8) + ISIZ * 8
ELSE
C BYTE 29
CALL GBYTEC (MSGA,KPDS(24),KPTR(8)+8,8)
C BYTE 30
CALL GBYTEC (MSGA,KPDS(25),KPTR(8)+16,8)
C BYTES 31-40 CURRENTLY RESERVED FOR FUTURE USE
KPTR(8) = KPTR(8) + 12 * 8
C BYTES 41 - N LOCAL USE DATA
C CALL W3FI01(LW)
C MWDBIT = LW * 8
MWDBIT = bit_size(KPDS)
ISIZ = KPTR(3) - 40
ITER = ISIZ / LW
IF (MOD(ISIZ,LW).NE.0) ITER = ITER + 1
CALL GBYTESC (MSGA,KPDS(36),KPTR(8),MWDBIT,0,ITER)
KPTR(8) = KPTR(8) + ISIZ * 8
END IF
END IF
END IF
C ----------- TEST FOR NEW GRID
IF (IAND(KPDS(4),128).NE.0) THEN
IF (IAND(KPDS(4),64).NE.0) THEN
IF (KPDS(3).NE.255) THEN
IF (KPDS(3).GE.21.AND.KPDS(3).LE.26)THEN
RETURN
ELSE IF (KPDS(3).GE.37.AND.KPDS(3).LE.44)THEN
RETURN
ELSE IF (KPDS(3).GE.61.AND.KPDS(3).LE.64) THEN
RETURN
END IF
IF (KPDS(1).EQ.7) THEN
IF (KPDS(3).GE.2.AND.KPDS(3).LE.3) THEN
ELSE IF (KPDS(3).GE.5.AND.KPDS(3).LE.6) THEN
ELSE IF (KPDS(3).EQ.8) THEN
ELSE IF (KPDS(3).GE.27.AND.KPDS(3).LE.34) THEN
ELSE IF (KPDS(3).EQ.50) THEN
ELSE IF (KPDS(3).EQ.53) THEN
ELSE IF (KPDS(3).GE.70.AND.KPDS(3).LE.77) THEN
ELSE IF (KPDS(3).EQ.98) THEN
ELSE IF (KPDS(3).GE.100.AND.KPDS(3).LE.105) THEN
ELSE IF (KPDS(3).EQ.126) THEN
ELSE IF (KPDS(3).EQ.196) THEN
ELSE IF (KPDS(3).GE.201.AND.KPDS(3).LE.237) THEN
ELSE
C PRINT *,' HAVE ENCOUNTERED A NEW GRID FOR',
C * ' NMC WITHOUT A GRID DESCRIPTION SECTION'
C PRINT *,' PLEASE NOTIFY AUTOMATION DIVISION'
C PRINT *,' PRODUCTION MANAGEMENT BRANCH'
C PRINT *,' W/NMC42)'
END IF
ELSE IF (KPDS(1).EQ.98) THEN
IF (KPDS(3).GE.1.AND.KPDS(3).LE.16) THEN
ELSE
C PRINT *,' HAVE ENCOUNTERED A NEW GRID FOR',
C * ' ECMWF WITHOUT A GRID DESCRIPTION SECTION'
C PRINT *,' PLEASE NOTIFY AUTOMATION DIVISION'
C PRINT *,' PRODUCTION MANAGEMENT BRANCH'
C PRINT *,' W/NMC42)'
END IF
ELSE IF (KPDS(1).EQ.74) THEN
IF (KPDS(3).GE.1.AND.KPDS(3).LE.12) THEN
ELSE IF (KPDS(3).GE.21.AND.KPDS(3).LE.26)THEN
ELSE IF (KPDS(3).GE.61.AND.KPDS(3).LE.64) THEN
ELSE IF (KPDS(3).GE.70.AND.KPDS(3).LE.77) THEN
ELSE
C PRINT *,' HAVE ENCOUNTERED A NEW GRID FOR',
C * ' U.K. MET OFFICE, BRACKNELL',
C * ' WITHOUT A GRID DESCRIPTION SECTION'
C PRINT *,' PLEASE NOTIFY AUTOMATION DIVISION'
C PRINT *,' PRODUCTION MANAGEMENT BRANCH'
C PRINT *,' W/NMC42)'
END IF
ELSE IF (KPDS(1).EQ.58) THEN
IF (KPDS(3).GE.1.AND.KPDS(3).LE.12) THEN
ELSE
C PRINT *,' HAVE ENCOUNTERED A NEW GRID FOR',
C * ' FNOC WITHOUT A GRID DESCRIPTION SECTION'
C PRINT *,' PLEASE NOTIFY AUTOMATION DIVISION'
C PRINT *,' PRODUCTION MANAGEMENT BRANCH'
C PRINT *,' W/NMC42)'
END IF
END IF
END IF
END IF
END IF
RETURN
END
SUBROUTINE FI633(MSGA,KPTR,KGDS,KRET)
C$$$ SUBPROGRAM DOCUMENTATION BLOCK
C . . . .
C SUBPROGRAM: FI633 EXTRACT INFO FROM GRIB-GDS
C PRGMMR: BILL CAVANAUGH ORG: W/NMC42 DATE: 91-09-13
C
C ABSTRACT: EXTRACT INFORMATION ON UNLISTED GRID TO ALLOW
C CONVERSION TO OFFICE NOTE 84 FORMAT.
C
C PROGRAM HISTORY LOG:
C 91-09-13 CAVANAUGH
C 95-03-20 M.BALDWIN FI633 MODIFICATION TO GET
C DATA REP TYPES [KGDS(1)] 201 AND 202 TO WORK.
C 95-10-31 IREDELL REMOVED SAVES AND PRINTS
C 98-09-08 BALDWIN ADD DATA REP TYPE [KGDS(1)] 203
C
C
C USAGE: CALL FI633(MSGA,KPTR,KGDS,KRET)
C INPUT ARGUMENT LIST:
C MSGA - ARRAY CONTAINING GRIB MESSAGE
C KPTR - ARRAY CONTAINING STORAGE FOR FOLLOWING PARAMETERS
C (1) - TOTAL LENGTH OF GRIB MESSAGE
C (2) - LENGTH OF INDICATOR (SECTION 0)
C (3) - LENGTH OF PDS (SECTION 1)
C (4) - LENGTH OF GDS (SECTION 2)
C (5) - LENGTH OF BMS (SECTION 3)
C (6) - LENGTH OF BDS (SECTION 4)
C (7) - VALUE OF CURRENT BYTE
C (8) - BIT POINTER
C (9) - GRIB START BIT NR
C (10) - GRIB/GRID ELEMENT COUNT
C (11) - NR UNUSED BITS AT END OF SECTION 3
C (12) - BIT MAP FLAG
C (13) - NR UNUSED BITS AT END OF SECTION 2
C (14) - BDS FLAGS
C (15) - NR UNUSED BITS AT END OF SECTION 4
C
C OUTPUT ARGUMENT LIST: (INCLUDING WORK ARRAYS)
C KGDS - ARRAY CONTAINING GDS ELEMENTS.
C (1) - DATA REPRESENTATION TYPE
C (19) - NUMBER OF VERTICAL COORDINATE PARAMETERS
C (20) - OCTET NUMBER OF THE LIST OF VERTICAL COORDINATE
C PARAMETERS
C OR
C OCTET NUMBER OF THE LIST OF NUMBERS OF POINTS
C IN EACH ROW
C OR
C 255 IF NEITHER ARE PRESENT
C (21) - FOR GRIDS WITH PL, NUMBER OF POINTS IN GRID
C (22) - NUMBER OF WORDS IN EACH ROW
C LATITUDE/LONGITUDE GRIDS
C (2) - N(I) NR POINTS ON LATITUDE CIRCLE
C (3) - N(J) NR POINTS ON LONGITUDE MERIDIAN
C (4) - LA(1) LATITUDE OF ORIGIN
C (5) - LO(1) LONGITUDE OF ORIGIN
C (6) - RESOLUTION FLAG
C (7) - LA(2) LATITUDE OF EXTREME POINT
C (8) - LO(2) LONGITUDE OF EXTREME POINT
C (9) - DI LONGITUDINAL DIRECTION OF INCREMENT
C (10) - DJ LATITUDINAL DIRECTION INCREMENT
C (11) - SCANNING MODE FLAG
C POLAR STEREOGRAPHIC GRIDS
C (2) - N(I) NR POINTS ALONG LAT CIRCLE
C (3) - N(J) NR POINTS ALONG LON CIRCLE
C (4) - LA(1) LATITUDE OF ORIGIN
C (5) - LO(1) LONGITUDE OF ORIGIN
C (6) - RESERVED
C (7) - LOV GRID ORIENTATION
C (8) - DX - X DIRECTION INCREMENT
C (9) - DY - Y DIRECTION INCREMENT
C (10) - PROJECTION CENTER FLAG
C (11) - SCANNING MODE
C SPHERICAL HARMONIC COEFFICIENTS
C (2) - J PENTAGONAL RESOLUTION PARAMETER
C (3) - K " " "
C (4) - M " " "
C (5) - REPRESENTATION TYPE
C (6) - COEFFICIENT STORAGE MODE
C MERCATOR GRIDS
C (2) - N(I) NR POINTS ON LATITUDE CIRCLE
C (3) - N(J) NR POINTS ON LONGITUDE MERIDIAN
C (4) - LA(1) LATITUDE OF ORIGIN
C (5) - LO(1) LONGITUDE OF ORIGIN
C (6) - RESOLUTION FLAG
C (7) - LA(2) LATITUDE OF LAST GRID POINT
C (8) - LO(2) LONGITUDE OF LAST GRID POINT
C (9) - LATIN - LATITUDE OF PROJECTION INTERSECTION
C (10) - RESERVED
C (11) - SCANNING MODE FLAG
C (12) - LONGITUDINAL DIR GRID LENGTH
C (13) - LATITUDINAL DIR GRID LENGTH
C LAMBERT CONFORMAL GRIDS
C (2) - NX NR POINTS ALONG X-AXIS
C (3) - NY NR POINTS ALONG Y-AXIS
C (4) - LA1 LAT OF ORIGIN (LOWER LEFT)
C (5) - LO1 LON OF ORIGIN (LOWER LEFT)
C (6) - RESOLUTION (RIGHT ADJ COPY OF OCTET 17)
C (7) - LOV - ORIENTATION OF GRID
C (8) - DX - X-DIR INCREMENT
C (9) - DY - Y-DIR INCREMENT
C (10) - PROJECTION CENTER FLAG
C (11) - SCANNING MODE FLAG
C (12) - LATIN 1 - FIRST LAT FROM POLE OF SECANT CONE INTER
C (13) - LATIN 2 - SECOND LAT FROM POLE OF SECANT CONE INTER
C STAGGERED ARAKAWA ROTATED LAT/LON GRIDS (203)
C (2) - N(I) NR POINTS ON ROTATED LATITUDE CIRCLE
C (3) - N(J) NR POINTS ON ROTATED LONGITUDE MERIDIAN
C (4) - LA(1) LATITUDE OF ORIGIN
C (5) - LO(1) LONGITUDE OF ORIGIN
C (6) - RESOLUTION FLAG
C (7) - LA(2) LATITUDE OF CENTER
C (8) - LO(2) LONGITUDE OF CENTER
C (9) - DI LONGITUDINAL DIRECTION OF INCREMENT
C (10) - DJ LATITUDINAL DIRECTION INCREMENT
C (11) - SCANNING MODE FLAG
C KPTR - ARRAY CONTAINING STORAGE FOR FOLLOWING PARAMETERS
C SEE INPUT LIST
C KRET - ERROR RETURN
C
C REMARKS:
C KRET = 0
C = 4 - DATA REPRESENTATION TYPE NOT CURRENTLY ACCEPTABLE
C
C SUBPROGRAM CAN BE CALLED FROM A MULTIPROCESSING ENVIRONMENT.
C
C ATTRIBUTES:
C LANGUAGE: FORTRAN 77
C MACHINE: HDS9000
C
C$$$
C ************************************************************
C INCOMING MESSAGE HOLDER
CHARACTER*1 MSGA(*)
C
C ARRAY GDS ELEMENTS
INTEGER KGDS(*)
C ARRAY OF POINTERS AND COUNTERS
INTEGER KPTR(*)
C
INTEGER KRET
C ---------------------------------------------------------------
KRET = 0
C PROCESS GRID DEFINITION SECTION (IF PRESENT)
C MAKE SURE BIT POINTER IS PROPERLY SET
KPTR(8) = KPTR(9) + (KPTR(2)*8) + (KPTR(3)*8) + 24
NSAVE = KPTR(8) - 24
C BYTE 4
C NV - NR OF VERT COORD PARAMETERS
CALL GBYTEC (MSGA,KGDS(19),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C BYTE 5
C PV - LOCATION - SEE FM92 MANUAL
CALL GBYTEC (MSGA,KGDS(20),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C BYTE 6
C DATA REPRESENTATION TYPE
CALL GBYTEC (MSGA,KGDS(1),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C BYTES 7-32 ARE GRID DEFINITION DEPENDING ON
C DATA REPRESENTATION TYPE
IF (KGDS(1).EQ.0) THEN
GO TO 1000
ELSE IF (KGDS(1).EQ.1) THEN
GO TO 4000
ELSE IF (KGDS(1).EQ.2.OR.KGDS(1).EQ.5) THEN
GO TO 2000
ELSE IF (KGDS(1).EQ.3) THEN
GO TO 5000
ELSE IF (KGDS(1).EQ.4) THEN
GO TO 1000
C ELSE IF (KGDS(1).EQ.10) THEN
C ELSE IF (KGDS(1).EQ.14) THEN
C ELSE IF (KGDS(1).EQ.20) THEN
C ELSE IF (KGDS(1).EQ.24) THEN
C ELSE IF (KGDS(1).EQ.30) THEN
C ELSE IF (KGDS(1).EQ.34) THEN
ELSE IF (KGDS(1).EQ.50) THEN
GO TO 3000
C ELSE IF (KGDS(1).EQ.60) THEN
C ELSE IF (KGDS(1).EQ.70) THEN
C ELSE IF (KGDS(1).EQ.80) THEN
ELSE IF (KGDS(1).EQ.201.OR.KGDS(1).EQ.202.OR.KGDS(1).EQ.203) THEN
GO TO 1000
ELSE
C MARK AS GDS/ UNKNOWN DATA REPRESENTATION TYPE
KRET = 4
RETURN
END IF
C BYTE 33-N VERTICAL COORDINATE PARAMETERS
C -----------
C BYTES 33-42 EXTENSIONS OF GRID DEFINITION FOR ROTATION
C OR STRETCHING OF THE COORDINATE SYSTEM OR
C LAMBERT CONFORMAL PROJECTION.
C BYTE 43-N VERTICAL COORDINATE PARAMETERS
C -----------
C BYTES 33-52 EXTENSIONS OF GRID DEFINITION FOR STRETCHED
C AND ROTATED COORDINATE SYSTEM
C BYTE 53-N VERTICAL COORDINATE PARAMETERS
C -----------
C ************************************************************
C ------------------- LATITUDE/LONGITUDE GRIDS
C ------------------- ARAKAWA STAGGERED, SEMI-STAGGERED, OR FILLED
C ROTATED LAT/LON GRIDS
C
C ------------------- BYTE 7-8 NR OF POINTS ALONG LATITUDE CIRCLE
1000 CONTINUE
CALL GBYTEC (MSGA,KGDS(2),KPTR(8),16)
KPTR(8) = KPTR(8) + 16
C ------------------- BYTE 9-10 NR OF POINTS ALONG LONG MERIDIAN
CALL GBYTEC (MSGA,KGDS(3),KPTR(8),16)
KPTR(8) = KPTR(8) + 16
C ------------------- BYTE 11-13 LATITUDE OF ORIGIN
CALL GBYTEC (MSGA,KGDS(4),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(4),8388608).NE.0) THEN
KGDS(4) = IAND(KGDS(4),8388607) * (-1)
END IF
C ------------------- BYTE 14-16 LONGITUDE OF ORIGIN
CALL GBYTEC (MSGA,KGDS(5),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(5),8388608).NE.0) THEN
KGDS(5) = - IAND(KGDS(5),8388607)
END IF
C ------------------- BYTE 17 RESOLUTION FLAG
CALL GBYTEC (MSGA,KGDS(6),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C ------------------- BYTE 18-20 LATITUDE OF LAST GRID POINT
CALL GBYTEC (MSGA,KGDS(7),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(7),8388608).NE.0) THEN
KGDS(7) = - IAND(KGDS(7),8388607)
END IF
C ------------------- BYTE 21-23 LONGITUDE OF LAST GRID POINT
CALL GBYTEC (MSGA,KGDS(8),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(8),8388608).NE.0) THEN
KGDS(8) = - IAND(KGDS(8),8388607)
END IF
C ------------------- BYTE 24-25 LATITUDINAL DIR INCREMENT
CALL GBYTEC (MSGA,KGDS(9),KPTR(8),16)
KPTR(8) = KPTR(8) + 16
C ------------------- BYTE 26-27 IF REGULAR LAT/LON GRID
C HAVE LONGIT DIR INCREMENT
C ELSE IF GAUSSIAN GRID
C HAVE NR OF LAT CIRCLES
C BETWEEN POLE AND EQUATOR
CALL GBYTEC (MSGA,KGDS(10),KPTR(8),16)
KPTR(8) = KPTR(8) + 16
C ------------------- BYTE 28 SCANNING MODE FLAGS
CALL GBYTEC (MSGA,KGDS(11),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C ------------------- BYTE 29-32 RESERVED
C SKIP TO START OF BYTE 33
CALL GBYTEC (MSGA,KGDS(12),KPTR(8),32)
KPTR(8) = KPTR(8) + 32
C -------------------
GO TO 900
C ******************************************************************
C ' POLAR STEREO PROCESSING '
C
C ------------------- BYTE 7-8 NR OF POINTS ALONG X=AXIS
2000 CONTINUE
CALL GBYTEC (MSGA,KGDS(2),KPTR(8),16)
KPTR(8) = KPTR(8) + 16
C ------------------- BYTE 9-10 NR OF POINTS ALONG Y-AXIS
CALL GBYTEC (MSGA,KGDS(3),KPTR(8),16)
KPTR(8) = KPTR(8) + 16
C ------------------- BYTE 11-13 LATITUDE OF ORIGIN
CALL GBYTEC (MSGA,KGDS(4),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(4),8388608).NE.0) THEN
KGDS(4) = - IAND(KGDS(4),8388607)
END IF
C ------------------- BYTE 14-16 LONGITUDE OF ORIGIN
CALL GBYTEC (MSGA,KGDS(5),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(5),8388608).NE.0) THEN
KGDS(5) = - IAND(KGDS(5),8388607)
END IF
C ------------------- BYTE 17 RESERVED
CALL GBYTEC (MSGA,KGDS(6),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C ------------------- BYTE 18-20 LOV ORIENTATION OF THE GRID
CALL GBYTEC (MSGA,KGDS(7),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(7),8388608).NE.0) THEN
KGDS(7) = - IAND(KGDS(7),8388607)
END IF
C ------------------- BYTE 21-23 DX - THE X DIRECTION INCREMENT
CALL GBYTEC (MSGA,KGDS(8),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(8),8388608).NE.0) THEN
KGDS(8) = - IAND(KGDS(8),8388607)
END IF
C ------------------- BYTE 24-26 DY - THE Y DIRECTION INCREMENT
CALL GBYTEC (MSGA,KGDS(9),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(9),8388608).NE.0) THEN
KGDS(9) = - IAND(KGDS(9),8388607)
END IF
C ------------------- BYTE 27 PROJECTION CENTER FLAG
CALL GBYTEC (MSGA,KGDS(10),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C ------------------- BYTE 28 SCANNING MODE
CALL GBYTEC (MSGA,KGDS(11),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C ------------------- BYTE 29-32 RESERVED
C SKIP TO START OF BYTE 33
CALL GBYTEC (MSGA,KGDS(12),KPTR(8),32)
KPTR(8) = KPTR(8) + 32
C
C -------------------
GO TO 900
C
C ******************************************************************
C ------------------- GRID DESCRIPTION FOR SPHERICAL HARMONIC COEFF.
C
C ------------------- BYTE 7-8 J PENTAGONAL RESOLUTION PARAMETER
3000 CONTINUE
CALL GBYTEC (MSGA,KGDS(2),KPTR(8),16)
KPTR(8) = KPTR(8) + 16
C ------------------- BYTE 9-10 K PENTAGONAL RESOLUTION PARAMETER
CALL GBYTEC (MSGA,KGDS(3),KPTR(8),16)
KPTR(8) = KPTR(8) + 16
C ------------------- BYTE 11-12 M PENTAGONAL RESOLUTION PARAMETER
CALL GBYTEC (MSGA,KGDS(4),KPTR(8),16)
KPTR(8) = KPTR(8) + 16
C ------------------- BYTE 13 REPRESENTATION TYPE
CALL GBYTEC (MSGA,KGDS(5),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C ------------------- BYTE 14 COEFFICIENT STORAGE MODE
CALL GBYTEC (MSGA,KGDS(6),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C ------------------- EMPTY FIELDS - BYTES 15 - 32
C SET TO START OF BYTE 33
KPTR(8) = KPTR(8) + 18 * 8
GO TO 900
C ******************************************************************
C PROCESS MERCATOR GRIDS
C
C ------------------- BYTE 7-8 NR OF POINTS ALONG LATITUDE CIRCLE
4000 CONTINUE
CALL GBYTEC (MSGA,KGDS(2),KPTR(8),16)
KPTR(8) = KPTR(8) + 16
C ------------------- BYTE 9-10 NR OF POINTS ALONG LONG MERIDIAN
CALL GBYTEC (MSGA,KGDS(3),KPTR(8),16)
KPTR(8) = KPTR(8) + 16
C ------------------- BYTE 11-13 LATITUE OF ORIGIN
CALL GBYTEC (MSGA,KGDS(4),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(4),8388608).NE.0) THEN
KGDS(4) = - IAND(KGDS(4),8388607)
END IF
C ------------------- BYTE 14-16 LONGITUDE OF ORIGIN
CALL GBYTEC (MSGA,KGDS(5),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(5),8388608).NE.0) THEN
KGDS(5) = - IAND(KGDS(5),8388607)
END IF
C ------------------- BYTE 17 RESOLUTION FLAG
CALL GBYTEC (MSGA,KGDS(6),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C ------------------- BYTE 18-20 LATITUDE OF EXTREME POINT
CALL GBYTEC (MSGA,KGDS(7),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(7),8388608).NE.0) THEN
KGDS(7) = - IAND(KGDS(7),8388607)
END IF
C ------------------- BYTE 21-23 LONGITUDE OF EXTREME POINT
CALL GBYTEC (MSGA,KGDS(8),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(8),8388608).NE.0) THEN
KGDS(8) = - IAND(KGDS(8),8388607)
END IF
C ------------------- BYTE 24-26 LATITUDE OF PROJECTION INTERSECTION
CALL GBYTEC (MSGA,KGDS(9),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(9),8388608).NE.0) THEN
KGDS(9) = - IAND(KGDS(9),8388607)
END IF
C ------------------- BYTE 27 RESERVED
CALL GBYTEC (MSGA,KGDS(10),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C ------------------- BYTE 28 SCANNING MODE
CALL GBYTEC (MSGA,KGDS(11),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C ------------------- BYTE 29-31 LONGITUDINAL DIR INCREMENT
CALL GBYTEC (MSGA,KGDS(12),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(12),8388608).NE.0) THEN
KGDS(12) = - IAND(KGDS(12),8388607)
END IF
C ------------------- BYTE 32-34 LATITUDINAL DIR INCREMENT
CALL GBYTEC (MSGA,KGDS(13),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(13),8388608).NE.0) THEN
KGDS(13) = - IAND(KGDS(13),8388607)
END IF
C ------------------- BYTE 35-42 RESERVED
C SKIP TO START OF BYTE 43
KPTR(8) = KPTR(8) + 8 * 8
C -------------------
GO TO 900
C ******************************************************************
C PROCESS LAMBERT CONFORMAL
C
C ------------------- BYTE 7-8 NR OF POINTS ALONG X-AXIS
5000 CONTINUE
CALL GBYTEC (MSGA,KGDS(2),KPTR(8),16)
KPTR(8) = KPTR(8) + 16
C ------------------- BYTE 9-10 NR OF POINTS ALONG Y-AXIS
CALL GBYTEC (MSGA,KGDS(3),KPTR(8),16)
KPTR(8) = KPTR(8) + 16
C ------------------- BYTE 11-13 LATITUDE OF ORIGIN
CALL GBYTEC (MSGA,KGDS(4),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(4),8388608).NE.0) THEN
KGDS(4) = - IAND(KGDS(4),8388607)
END IF
C ------------------- BYTE 14-16 LONGITUDE OF ORIGIN (LOWER LEFT)
CALL GBYTEC (MSGA,KGDS(5),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(5),8388608).NE.0) THEN
KGDS(5) = - IAND(KGDS(5),8388607)
END IF
C ------------------- BYTE 17 RESOLUTION
CALL GBYTEC (MSGA,KGDS(6),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C ------------------- BYTE 18-20 LOV -ORIENTATION OF GRID
CALL GBYTEC (MSGA,KGDS(7),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(7),8388608).NE.0) THEN
KGDS(7) = - IAND(KGDS(7),8388607)
END IF
C ------------------- BYTE 21-23 DX - X-DIR INCREMENT
CALL GBYTEC (MSGA,KGDS(8),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
C ------------------- BYTE 24-26 DY - Y-DIR INCREMENT
CALL GBYTEC (MSGA,KGDS(9),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
C ------------------- BYTE 27 PROJECTION CENTER FLAG
CALL GBYTEC (MSGA,KGDS(10),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C ------------------- BYTE 28 SCANNING MODE
CALL GBYTEC (MSGA,KGDS(11),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C ------------------- BYTE 29-31 LATIN1 - 1ST LAT FROM POLE
CALL GBYTEC (MSGA,KGDS(12),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(12),8388608).NE.0) THEN
KGDS(12) = - IAND(KGDS(12),8388607)
END IF
C ------------------- BYTE 32-34 LATIN2 - 2ND LAT FROM POLE
CALL GBYTEC (MSGA,KGDS(13),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(13),8388608).NE.0) THEN
KGDS(13) = - IAND(KGDS(13),8388607)
END IF
C ------------------- BYTE 35-37 LATITUDE OF SOUTHERN POLE
CALL GBYTEC (MSGA,KGDS(14),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(14),8388608).NE.0) THEN
KGDS(14) = - IAND(KGDS(14),8388607)
END IF
C ------------------- BYTE 38-40 LONGITUDE OF SOUTHERN POLE
CALL GBYTEC (MSGA,KGDS(15),KPTR(8),24)
KPTR(8) = KPTR(8) + 24
IF (IAND(KGDS(15),8388608).NE.0) THEN
KGDS(15) = - IAND(KGDS(15),8388607)
END IF
C ------------------- BYTE 41-42 RESERVED
CALL GBYTEC (MSGA,KGDS(16),KPTR(8),16)
KPTR(8) = KPTR(8) + 16
C -------------------
900 CONTINUE
C
C MORE CODE FOR GRIDS WITH PL
C
IF (KGDS(19).EQ.0.OR.KGDS(19).EQ.255) THEN
IF (KGDS(20).NE.255) THEN
ISUM = 0
KPTR(8) = NSAVE + (KGDS(20) - 1) * 8
CALL GBYTESC (MSGA,KGDS(22),KPTR(8),16,0,KGDS(3))
DO 910 J = 1, KGDS(3)
ISUM = ISUM + KGDS(21+J)
910 CONTINUE
KGDS(21) = ISUM
END IF
END IF
RETURN
END
SUBROUTINE FI634(MSGA,KPTR,KPDS,KGDS,KBMS,KRET)
C$$$ SUBPROGRAM DOCUMENTATION BLOCK
C . . . .
C SUBPROGRAM: FI634 EXTRACT OR GENERATE BIT MAP FOR OUTPUT
C PRGMMR: BILL CAVANAUGH ORG: W/NMC42 DATE: 91-09-13
C
C ABSTRACT: IF BIT MAP SEC IS AVAILABLE IN GRIB MESSAGE, EXTRACT
C FOR PROGRAM USE, OTHERWISE GENERATE AN APPROPRIATE BIT MAP.
C
C PROGRAM HISTORY LOG:
C 91-09-13 CAVANAUGH
C 91-11-12 CAVANAUGH MODIFIED SIZE OF ECMWF GRIDS 5 - 8.
C 95-10-31 IREDELL REMOVED SAVES AND PRINTS
C 97-02-12 W BOSTELMAN CORRECTS ECMWF US GRID 2 PROCESSING
C 97-09-19 IREDELL VECTORIZED BITMAP DECODER
C 98-09-02 GILBERT CORRECTED ERROR IN MAP SIZE FOR U.S. GRID 92
C 98-09-08 BALDWIN ADD GRIDS 190,192
C 99-01-20 BALDWIN ADD GRIDS 236,237
C
C USAGE: CALL FI634(MSGA,KPTR,KPDS,KGDS,KBMS,KRET)
C INPUT ARGUMENT LIST:
C MSGA - BUFR MESSAGE
C KPTR - ARRAY CONTAINING STORAGE FOR FOLLOWING PARAMETERS
C (1) - TOTAL LENGTH OF GRIB MESSAGE
C (2) - LENGTH OF INDICATOR (SECTION 0)
C (3) - LENGTH OF PDS (SECTION 1)
C (4) - LENGTH OF GDS (SECTION 2)
C (5) - LENGTH OF BMS (SECTION 3)
C (6) - LENGTH OF BDS (SECTION 4)
C (7) - VALUE OF CURRENT BYTE
C (8) - BIT POINTER
C (9) - GRIB START BIT NR
C (10) - GRIB/GRID ELEMENT COUNT
C (11) - NR UNUSED BITS AT END OF SECTION 3
C (12) - BIT MAP FLAG
C (13) - NR UNUSED BITS AT END OF SECTION 2
C (14) - BDS FLAGS
C (15) - NR UNUSED BITS AT END OF SECTION 4
C KPDS - ARRAY CONTAINING PDS ELEMENTS.
C (1) - ID OF CENTER
C (2) - MODEL IDENTIFICATION
C (3) - GRID IDENTIFICATION
C (4) - GDS/BMS FLAG
C (5) - INDICATOR OF PARAMETER
C (6) - TYPE OF LEVEL
C (7) - HEIGHT/PRESSURE , ETC OF LEVEL
C (8) - YEAR OF CENTURY
C (9) - MONTH OF YEAR
C (10) - DAY OF MONTH
C (11) - HOUR OF DAY
C (12) - MINUTE OF HOUR
C (13) - INDICATOR OF FORECAST TIME UNIT
C (14) - TIME RANGE 1
C (15) - TIME RANGE 2
C (16) - TIME RANGE FLAG
C (17) - NUMBER INCLUDED IN AVERAGE
C
C OUTPUT ARGUMENT LIST:
C KBMS - BITMAP DESCRIBING LOCATION OF OUTPUT ELEMENTS.
C KPTR - ARRAY CONTAINING STORAGE FOR FOLLOWING PARAMETERS
C SEE INPUT LIST
C KRET - ERROR RETURN
C
C REMARKS:
C KRET = 0 - NO ERROR
C = 5 - GRID NOT AVAIL FOR CENTER INDICATED
C =10 - INCORRECT CENTER INDICATOR
C =12 - BYTES 5-6 ARE NOT ZERO IN BMS, PREDEFINED BIT MAP
C NOT PROVIDED BY THIS CENTER
C
C SUBPROGRAM CAN BE CALLED FROM A MULTIPROCESSING ENVIRONMENT.
C
C ATTRIBUTES:
C LANGUAGE: FORTRAN 77
C MACHINE: HDS9000
C
C$$$
C
C INCOMING MESSAGE HOLDER
CHARACTER*1 MSGA(*)
C
C BIT MAP
LOGICAL*1 KBMS(*)
C
C ARRAY OF POINTERS AND COUNTERS
INTEGER KPTR(*)
C ARRAY OF POINTERS AND COUNTERS
INTEGER KPDS(*)
INTEGER KGDS(*)
C
INTEGER KRET
INTEGER MASK(8)
C ----------------------GRID 21 AND GRID 22 ARE THE SAME
LOGICAL*1 GRD21( 1369)
C ----------------------GRID 23 AND GRID 24 ARE THE SAME
LOGICAL*1 GRD23( 1369)
LOGICAL*1 GRD25( 1368)
LOGICAL*1 GRD26( 1368)
C ----------------------GRID 27 AND GRID 28 ARE THE SAME
C ----------------------GRID 29 AND GRID 30 ARE THE SAME
C ----------------------GRID 33 AND GRID 34 ARE THE SAME
LOGICAL*1 GRD50( 1188)
C -----------------------GRID 61 AND GRID 62 ARE THE SAME
LOGICAL*1 GRD61( 4186)
C -----------------------GRID 63 AND GRID 64 ARE THE SAME
LOGICAL*1 GRD63( 4186)
C LOGICAL*1 GRD70(16380)/16380*.TRUE./
C -------------------------------------------------------------
DATA GRD21 /1333*.TRUE.,36*.FALSE./
DATA GRD23 /.TRUE.,36*.FALSE.,1332*.TRUE./
DATA GRD25 /1297*.TRUE.,71*.FALSE./
DATA GRD26 /.TRUE.,71*.FALSE.,1296*.TRUE./
DATA GRD50/
C LINE 1-4
& 7*.FALSE.,22*.TRUE.,14*.FALSE.,22*.TRUE.,
& 14*.FALSE.,22*.TRUE.,14*.FALSE.,22*.TRUE.,7*.FALSE.,
C LINE 5-8
& 6*.FALSE.,24*.TRUE.,12*.FALSE.,24*.TRUE.,
& 12*.FALSE.,24*.TRUE.,12*.FALSE.,24*.TRUE.,6*.FALSE.,
C LINE 9-12
& 5*.FALSE.,26*.TRUE.,10*.FALSE.,26*.TRUE.,
& 10*.FALSE.,26*.TRUE.,10*.FALSE.,26*.TRUE.,5*.FALSE.,
C LINE 13-16
& 4*.FALSE.,28*.TRUE., 8*.FALSE.,28*.TRUE.,
& 8*.FALSE.,28*.TRUE., 8*.FALSE.,28*.TRUE.,4*.FALSE.,
C LINE 17-20
& 3*.FALSE.,30*.TRUE., 6*.FALSE.,30*.TRUE.,
& 6*.FALSE.,30*.TRUE., 6*.FALSE.,30*.TRUE.,3*.FALSE.,
C LINE 21-24
& 2*.FALSE.,32*.TRUE., 4*.FALSE.,32*.TRUE.,
& 4*.FALSE.,32*.TRUE., 4*.FALSE.,32*.TRUE.,2*.FALSE.,
C LINE 25-28
& .FALSE.,34*.TRUE., 2*.FALSE.,34*.TRUE.,
& 2*.FALSE.,34*.TRUE., 2*.FALSE.,34*.TRUE., .FALSE.,
C LINE 29-33
& 180*.TRUE./
DATA GRD61 /4096*.TRUE.,90*.FALSE./
DATA GRD63 /.TRUE.,90*.FALSE.,4095*.TRUE./
DATA MASK /128,64,32,16,8,4,2,1/
C
C PRINT *,'FI634'
IF (IAND(KPDS(4),64).EQ.64) THEN
C
C SET UP BIT POINTER
C SECTION 0 SECTION 1 SECTION 2
KPTR(8) = KPTR(9) + (KPTR(2)*8) + (KPTR(3)*8) + (KPTR(4)*8) + 24
C
C BYTE 4 NUMBER OF UNUSED BITS AT END OF SECTION 3
C
CALL GBYTEC (MSGA,KPTR(11),KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C
C BYTE 5,6 TABLE REFERENCE IF 0, BIT MAP FOLLOWS
C
CALL GBYTEC (MSGA,KPTR(12),KPTR(8),16)
KPTR(8) = KPTR(8) + 16
C IF TABLE REFERENCE = 0, EXTRACT BIT MAP
IF (KPTR(12).EQ.0) THEN
C CALCULATE NR OF BITS IN BIT MAP
IBITS = (KPTR(5) - 6) * 8 - KPTR(11)
KPTR(10) = IBITS
IF (KPDS(3).EQ.21.OR.KPDS(3).EQ.22.OR.KPDS(3).EQ.25.
* OR.KPDS(3).EQ.61.OR.KPDS(3).EQ.62) THEN
C NORTHERN HEMISPHERE 21, 22, 25, 61, 62
CALL FI634X(IBITS,KPTR(8),MSGA,KBMS)
IF (KPDS(3).EQ.25) THEN
KADD = 71
ELSE IF (KPDS(3).EQ.61.OR.KPDS(3).EQ.62) THEN
KADD = 90
ELSE
KADD = 36
END IF
DO 25 I = 1, KADD
KBMS(I+IBITS) = .FALSE.
25 CONTINUE
KPTR(10) = KPTR(10) + KADD
RETURN
ELSE IF (KPDS(3).EQ.23.OR.KPDS(3).EQ.24.OR.KPDS(3).EQ.26.
* OR.KPDS(3).EQ.63.OR.KPDS(3).EQ.64) THEN
C SOUTHERN HEMISPHERE 23, 24, 26, 63, 64
CALL FI634X(IBITS,KPTR(8),MSGA,KBMS)
IF (KPDS(3).EQ.26) THEN
KADD = 72
ELSE IF (KPDS(3).EQ.63.OR.KPDS(3).EQ.64) THEN
KADD = 91
ELSE
KADD = 37
END IF
DO 26 I = 1, KADD
KBMS(I+IBITS) = .FALSE.
26 CONTINUE
KPTR(10) = KPTR(10) + KADD - 1
RETURN
ELSE IF (KPDS(3).EQ.50) THEN
KPAD = 7
KIN = 22
KBITS = 0
DO 55 I = 1, 7
DO 54 J = 1, 4
DO 51 K = 1, KPAD
KBITS = KBITS + 1
KBMS(KBITS) = .FALSE.
51 CONTINUE
CALL FI634X(KIN,KPTR(8),MSGA,KBMS(KBITS+1))
KPTR(8)=KPTR(8)+KIN
KBITS=KBITS+KIN
DO 53 K = 1, KPAD
KBITS = KBITS + 1
KBMS(KBITS) = .FALSE.
53 CONTINUE
54 CONTINUE
KIN = KIN + 2
KPAD = KPAD - 1
55 CONTINUE
DO 57 II = 1, 5
CALL FI634X(KIN,KPTR(8),MSGA,KBMS(KBITS+1))
KPTR(8)=KPTR(8)+KIN
KBITS=KBITS+KIN
57 CONTINUE
ELSE
C EXTRACT BIT MAP FROM BMS FOR OTHER GRIDS
CALL FI634X(IBITS,KPTR(8),MSGA,KBMS)
END IF
RETURN
ELSE
C PRINT *,'FI634-NO PREDEFINED BIT MAP PROVIDED BY THIS CENTER'
KRET = 12
RETURN
END IF
C
END IF
KRET = 0
C -------------------------------------------------------
C PROCESS NON-STANDARD GRID
C -------------------------------------------------------
IF (KPDS(3).EQ.255) THEN
C PRINT *,'NON STANDARD GRID, CENTER = ',KPDS(1)
J = KGDS(2) * KGDS(3)
KPTR(10) = J
DO 600 I = 1, J
KBMS(I) = .TRUE.
600 CONTINUE
RETURN
END IF
C -------------------------------------------------------
C CHECK INTERNATIONAL SET
C -------------------------------------------------------
IF (KPDS(3).EQ.21.OR.KPDS(3).EQ.22) THEN
C ----- INT'L GRIDS 21, 22 - MAP SIZE 1369
J = 1369
KPTR(10) = J
CALL FI637(J,KPDS,KGDS,KRET)
IF(KRET.NE.0) GO TO 820
DO 3021 I = 1, 1369
KBMS(I) = GRD21(I)
3021 CONTINUE
RETURN
ELSE IF (KPDS(3).EQ.23.OR.KPDS(3).EQ.24) THEN
C ----- INT'L GRIDS 23, 24 - MAP SIZE 1369
J = 1369
KPTR(10) = J
CALL FI637(J,KPDS,KGDS,KRET)
IF(KRET.NE.0) GO TO 820
DO 3023 I = 1, 1369
KBMS(I) = GRD23(I)
3023 CONTINUE
RETURN
ELSE IF (KPDS(3).EQ.25) THEN
C ----- INT'L GRID 25 - MAP SIZE 1368
J = 1368
KPTR(10) = J
CALL FI637(J,KPDS,KGDS,KRET)
IF(KRET.NE.0) GO TO 820
DO 3025 I = 1, 1368
KBMS(I) = GRD25(I)
3025 CONTINUE
RETURN
ELSE IF (KPDS(3).EQ.26) THEN
C ----- INT'L GRID 26 - MAP SIZE 1368
J = 1368
KPTR(10) = J
CALL FI637(J,KPDS,KGDS,KRET)
IF(KRET.NE.0) GO TO 820
DO 3026 I = 1, 1368
KBMS(I) = GRD26(I)
3026 CONTINUE
RETURN
ELSE IF (KPDS(3).GE.37.AND.KPDS(3).LE.44) THEN
C ----- INT'L GRID 37-44 - MAP SIZE 3447
J = 3447
GO TO 800
ELSE IF (KPDS(1).EQ.7.AND.KPDS(3).EQ.50) THEN
C ----- INT'L GRIDS 50 - MAP SIZE 964
J = 1188
KPTR(10) = J
CALL FI637(J,KPDS,KGDS,KRET)
IF(KRET.NE.0) GO TO 890
DO 3050 I = 1, J
KBMS(I) = GRD50(I)
3050 CONTINUE
RETURN
ELSE IF (KPDS(3).EQ.61.OR.KPDS(3).EQ.62) THEN
C ----- INT'L GRIDS 61, 62 - MAP SIZE 4186
J = 4186
KPTR(10) = J
CALL FI637(J,KPDS,KGDS,KRET)
IF(KRET.NE.0) GO TO 820
DO 3061 I = 1, 4186
KBMS(I) = GRD61(I)
3061 CONTINUE
RETURN
ELSE IF (KPDS(3).EQ.63.OR.KPDS(3).EQ.64) THEN
C ----- INT'L GRIDS 63, 64 - MAP SIZE 4186
J = 4186
KPTR(10) = J
CALL FI637(J,KPDS,KGDS,KRET)
IF(KRET.NE.0) GO TO 820
DO 3063 I = 1, 4186
KBMS(I) = GRD63(I)
3063 CONTINUE
RETURN
END IF
C -------------------------------------------------------
C CHECK UNITED STATES SET
C -------------------------------------------------------
IF (KPDS(1).EQ.7) THEN
IF (KPDS(3).LT.100) THEN
IF (KPDS(3).EQ.1) THEN
C ----- U.S. GRID 1 - MAP SIZE 1679
J = 1679
GO TO 800
END IF
IF (KPDS(3).EQ.2) THEN
C ----- U.S. GRID 2 - MAP SIZE 10512
J = 10512
GO TO 800
ELSE IF (KPDS(3).EQ.3) THEN
C ----- U.S. GRID 3 - MAP SIZE 65160
J = 65160
GO TO 800
ELSE IF (KPDS(3).EQ.4) THEN
C ----- U.S. GRID 4 - MAP SIZE 259920
J = 259920
GO TO 800
ELSE IF (KPDS(3).EQ.5) THEN
C ----- U.S. GRID 5 - MAP SIZE 3021
J = 3021
GO TO 800
ELSE IF (KPDS(3).EQ.6) THEN
C ----- U.S. GRID 6 - MAP SIZE 2385
J = 2385
GO TO 800
ELSE IF (KPDS(3).EQ.8) THEN
C ----- U.S. GRID 8 - MAP SIZE 5104
J = 5104
GO TO 800
ELSE IF (KPDS(3).EQ.27.OR.KPDS(3).EQ.28) THEN
C ----- U.S. GRIDS 27, 28 - MAP SIZE 4225
J = 4225
GO TO 800
ELSE IF (KPDS(3).EQ.29.OR.KPDS(3).EQ.30) THEN
C ----- U.S. GRIDS 29,30 - MAP SIZE 5365
J = 5365
GO TO 800
ELSE IF (KPDS(3).EQ.33.OR.KPDS(3).EQ.34) THEN
C ----- U.S GRID 33, 34 - MAP SIZE 8326
J = 8326
GO TO 800
ELSE IF (KPDS(3).GE.37.AND.KPDS(3).LE.44) THEN
C ----- U.S. GRID 37-44 - MAP SIZE 3447
J = 3447
GO TO 800
ELSE IF (KPDS(3).EQ.45) THEN
C ----- U.S. GRID 45 - MAP SIZE 41760
J = 41760
GO TO 800
ELSE IF (KPDS(3).EQ.53) THEN
C ----- U.S. GRID 53 - MAP SIZE 5967
J = 5967
GO TO 800
ELSE IF (KPDS(3).EQ.55.OR.KPDS(3).EQ.56) THEN
C ----- U.S GRID 55, 56 - MAP SIZE 6177
J = 6177
GO TO 800
ELSE IF (KPDS(3).GE.67.AND.KPDS(3).LE.71) THEN
C ----- U.S GRID 67-71 - MAP SIZE 13689
J = 13689
GO TO 800
ELSE IF (KPDS(3).EQ.72) THEN
C ----- U.S GRID 72 - MAP SIZE 406
J = 406
GO TO 800
ELSE IF (KPDS(3).EQ.73) THEN
C ----- U.S GRID 73 - MAP SIZE 13056
J = 13056
GO TO 800
ELSE IF (KPDS(3).EQ.74) THEN
C ----- U.S GRID 74 - MAP SIZE 10800
J = 10800
GO TO 800
ELSE IF (KPDS(3).GE.75.AND.KPDS(3).LE.77) THEN
C ----- U.S GRID 75-77 - MAP SIZE 12321
J = 12321
GO TO 800
ELSE IF (KPDS(3).EQ.85.OR.KPDS(3).EQ.86) THEN
C ----- U.S GRID 85,86 - MAP SIZE 32400
J = 32400
GO TO 800
ELSE IF (KPDS(3).EQ.87) THEN
C ----- U.S GRID 87 - MAP SIZE 5022
J = 5022
GO TO 800
ELSE IF (KPDS(3).EQ.90) THEN
C ----- U.S GRID 90 - MAP SIZE 71779
J = 71779
GO TO 800
ELSE IF (KPDS(3).EQ.91) THEN
C ----- U.S GRID 91 - MAP SIZE 71779
J = 71779
GO TO 800
ELSE IF (KPDS(3).EQ.92) THEN
C ----- U.S GRID 92 - MAP SIZE 71779
J = 71779
GO TO 800
ELSE IF (KPDS(3).EQ.93) THEN
C ----- U.S GRID 93 - MAP SIZE 71779
J = 71779
GO TO 800
ELSE IF (KPDS(3).EQ.94) THEN
C ----- U.S GRID 94 - MAP SIZE 196305
J = 196305
GO TO 800
ELSE IF (KPDS(3).EQ.95) THEN
C ----- U.S GRID 95 - MAP SIZE 36062
J = 36062
GO TO 800
ELSE IF (KPDS(3).EQ.96) THEN
C ----- U.S GRID 96 - MAP SIZE 646602
J = 646602
GO TO 800
ELSE IF (KPDS(3).EQ.97) THEN
C ----- U.S GRID 97 - MAP SIZE 8165
J = 8165
GO TO 800
ELSE IF (KPDS(3).EQ.98) THEN
C ----- U.S GRID 98 - MAP SIZE 18048
J = 18048
GO TO 800
END IF
ELSE IF (KPDS(3).GE.100.AND.KPDS(3).LT.200) THEN
IF (KPDS(3).EQ.100) THEN
C ----- U.S. GRID 100 - MAP SIZE 6889
J = 6889
GO TO 800
ELSE IF (KPDS(3).EQ.101) THEN
C ----- U.S. GRID 101 - MAP SIZE 10283
J = 10283
GO TO 800
ELSE IF (KPDS(3).EQ.103) THEN
C ----- U.S. GRID 103 - MAP SIZE 3640
J = 3640
GO TO 800
ELSE IF (KPDS(3).EQ.104) THEN
C ----- U.S. GRID 104 - MAP SIZE 16170
J = 16170
GO TO 800
ELSE IF (KPDS(3).EQ.105) THEN
C ----- U.S. GRID 105 - MAP SIZE 6889
J = 6889
GO TO 800
ELSE IF (KPDS(3).EQ.106) THEN
C ----- U.S. GRID 106 - MAP SIZE 19305
J = 19305
GO TO 800
ELSE IF (KPDS(3).EQ.107) THEN
C ----- U.S. GRID 107 - MAP SIZE 11040
J = 11040
GO TO 800
ELSE IF (KPDS(3).EQ.126) THEN
C ----- U.S. GRID 126 - MAP SIZE 72960
J = 72960
GO TO 800
ELSE IF (KPDS(3).EQ.190) THEN
C ----- U.S GRID 190 - MAP SIZE 12972
J = 12972
GO TO 800
ELSE IF (KPDS(3).EQ.192) THEN
C ----- U.S GRID 192 - MAP SIZE 81395
J = 81395
GO TO 800
ELSE IF (KPDS(3).EQ.194) THEN
C ----- U.S GRID 194 - MAP SIZE 8165
J = 8165
GO TO 800
ELSE IF (KPDS(3).EQ.196) THEN
C ----- U.S. GRID 196 - MAP SIZE 45903
J = 45903
GO TO 800
ELSE IF (KPDS(3).EQ.198) THEN
C ----- U.S. GRID 198 - MAP SIZE 41760
J = 41760
GO TO 800
ELSE IF (IAND(KPDS(4),128).EQ.128) THEN
C ----- U.S. NON-STANDARD GRID
GO TO 895
END IF
ELSE IF (KPDS(3).GE.200) THEN
IF (KPDS(3).EQ.201) THEN
J = 4225
GO TO 800
ELSE IF (KPDS(3).EQ.202) THEN
J = 2795
GO TO 800
ELSE IF (KPDS(3).EQ.203.OR.KPDS(3).EQ.205) THEN
J = 1755
GO TO 800
ELSE IF (KPDS(3).EQ.204) THEN
J = 6324
GO TO 800
ELSE IF (KPDS(3).EQ.206) THEN
J = 2091
GO TO 800
ELSE IF (KPDS(3).EQ.207) THEN
J = 1715
GO TO 800
ELSE IF (KPDS(3).EQ.208) THEN
J = 783
GO TO 800
ELSE IF (KPDS(3).EQ.209) THEN
J = 61325
GO TO 800
ELSE IF (KPDS(3).EQ.210) THEN
J = 625
GO TO 800
ELSE IF (KPDS(3).EQ.211) THEN
J = 6045
GO TO 800
ELSE IF (KPDS(3).EQ.212) THEN
J = 23865
GO TO 800
ELSE IF (KPDS(3).EQ.213) THEN
J = 10965
GO TO 800
ELSE IF (KPDS(3).EQ.214) THEN
J = 6693
GO TO 800
ELSE IF (KPDS(3).EQ.215) THEN
J = 94833
GO TO 800
ELSE IF (KPDS(3).EQ.216) THEN
J = 14873
GO TO 800
ELSE IF (KPDS(3).EQ.217) THEN
J = 59001
GO TO 800
ELSE IF (KPDS(3).EQ.221) THEN
J = 96673
GO TO 800
ELSE IF (KPDS(3).EQ.222) THEN
J = 15456
GO TO 800
ELSE IF (KPDS(3).EQ.236) THEN
J = 17063
GO TO 800
ELSE IF (KPDS(3).EQ.237) THEN
J = 2538
GO TO 800
ELSE IF (KPDS(3).EQ.238) THEN
J = 55825
GO TO 800
ELSE IF (KPDS(3).EQ.239) THEN
J = 19065
GO TO 800
ELSE IF (KPDS(3).EQ.240) THEN
J = 987601
GO TO 800
ELSE IF (KPDS(3).EQ.241) THEN
J = 244305
GO TO 800
ELSE IF (KPDS(3).EQ.242) THEN
J = 235025
GO TO 800
ELSE IF (KPDS(3).EQ.243) THEN
J = 12726
GO TO 800
ELSE IF (KPDS(3).EQ.244) THEN
J = 55825
GO TO 800
ELSE IF (KPDS(3).EQ.245) THEN
J = 80162
GO TO 800
ELSE IF (KPDS(3).EQ.246) THEN
J = 79002
GO TO 800
ELSE IF (KPDS(3).EQ.247) THEN
J = 80162
GO TO 800
ELSE IF (KPDS(3).EQ.248) THEN
J = 7676
GO TO 800
ELSE IF (KPDS(3).EQ.250) THEN
J = 7676
GO TO 800
ELSE IF (IAND(KPDS(4),128).EQ.128) THEN
GO TO 895
END IF
KRET = 5
RETURN
END IF
END IF
C -------------------------------------------------------
C CHECK JAPAN METEOROLOGICAL AGENCY SET
C -------------------------------------------------------
IF (KPDS(1).EQ.34) THEN
IF (IAND(KPDS(4),128).EQ.128) THEN
C PRINT *,'JMA MAP IS NOT PREDEFINED, THE GDS WILL'
C PRINT *,'BE USED TO UNPACK THE DATA, MAP = ',KPDS(3)
GO TO 900
END IF
END IF
C -------------------------------------------------------
C CHECK CANADIAN SET
C -------------------------------------------------------
IF (KPDS(1).EQ.54) THEN
IF (IAND(KPDS(4),128).EQ.128) THEN
C PRINT *,'CANADIAN MAP IS NOT PREDEFINED, THE GDS WILL'
C PRINT *,'BE USED TO UNPACK THE DATA, MAP = ',KPDS(3)
GO TO 900
END IF
END IF
C -------------------------------------------------------
C CHECK FNOC SET
C -------------------------------------------------------
IF (KPDS(1).EQ.58) THEN
IF (KPDS(3).EQ.220.OR.KPDS(3).EQ.221) THEN
C FNOC GRID 220, 221 - MAPSIZE 3969 (63 * 63)
J = 3969
KPTR(10) = J
DO I = 1, J
KBMS(I) = .TRUE.
END DO
RETURN
END IF
IF (KPDS(3).EQ.223) THEN
C FNOC GRID 223 - MAPSIZE 10512 (73 * 144)
J = 10512
KPTR(10) = J
DO I = 1, J
KBMS(I) = .TRUE.
END DO
RETURN
END IF
IF (IAND(KPDS(4),128).EQ.128) THEN
C PRINT *,'FNOC MAP IS NOT PREDEFINED, THE GDS WILL'
C PRINT *,'BE USED TO UNPACK THE DATA, MAP = ',KPDS(3)
GO TO 900
END IF
END IF
C -------------------------------------------------------
C CHECK UKMET SET
C -------------------------------------------------------
IF (KPDS(1).EQ.74) THEN
IF (IAND(KPDS(4),128).EQ.128) THEN
GO TO 820
END IF
END IF
C -------------------------------------------------------
C CHECK ECMWF SET
C -------------------------------------------------------
IF (KPDS(1).EQ.98) THEN
IF (KPDS(3).GE.1.AND.KPDS(3).LE.12) THEN
IF (KPDS(3).GE.5.AND.KPDS(3).LE.8) THEN
J = 1073
ELSE
J = 1369
END IF
KPTR(10) = J
CALL FI637(J,KPDS,KGDS,KRET)
IF(KRET.NE.0) GO TO 810
KPTR(10) = J ! Reset For Modified J
DO 1000 I = 1, J
KBMS(I) = .TRUE.
1000 CONTINUE
RETURN
ELSE IF (KPDS(3).GE.13.AND.KPDS(3).LE.16) THEN
J = 361
KPTR(10) = J
CALL FI637(J,KPDS,KGDS,KRET)
IF(KRET.NE.0) GO TO 810
DO 1013 I = 1, J
KBMS(I) = .TRUE.
1013 CONTINUE
RETURN
ELSE IF (IAND(KPDS(4),128).EQ.128) THEN
GO TO 810
ELSE
KRET = 5
RETURN
END IF
ELSE
C PRINT *,'CENTER ',KPDS(1),' IS NOT DEFINED'
IF (IAND(KPDS(4),128).EQ.128) THEN
C PRINT *,'GDS WILL BE USED TO UNPACK THE DATA',
C * ' MAP = ',KPDS(3)
GO TO 900
ELSE
KRET = 10
RETURN
END IF
END IF
C =======================================
C
800 CONTINUE
KPTR(10) = J
CALL FI637 (J,KPDS,KGDS,KRET)
IF(KRET.NE.0) GO TO 801
DO 2201 I = 1, J
KBMS(I) = .TRUE.
2201 CONTINUE
RETURN
801 CONTINUE
C
C ----- THE MAP HAS A GDS, BYTE 7 OF THE (PDS) THE GRID IDENTIFICATION
C ----- IS NOT 255, THE SIZE OF THE GRID IS NOT THE SAME AS THE
C ----- PREDEFINED SIZES OF THE U.S. GRIDS, OR KNOWN GRIDS OF THE
C ----- OF THE OTHER CENTERS. THE GRID CAN BE UNKNOWN, OR FROM AN
C ----- UNKNOWN CENTER, WE WILL USE THE INFORMATION IN THE GDS TO MAKE
C ----- A BIT MAP.
C
810 CONTINUE
C PRINT *,'ECMWF PREDEFINED MAP SIZE DOES NOT MATCH, I WILL USE'
GO TO 895
C
820 CONTINUE
C PRINT *,'U.K. MET PREDEFINED MAP SIZE DOES NOT MATCH, I WILL USE'
GO TO 895
C
890 CONTINUE
C PRINT *,'PREDEFINED MAP SIZE DOES NOT MATCH, I WILL USE'
895 CONTINUE
C PRINT *,'THE GDS TO UNPACK THE DATA, MAP TYPE = ',KPDS(3)
C
900 CONTINUE
J = KGDS(2) * KGDS(3)
C AFOS AFOS AFOS SPECIAL CASE
C INVOLVES NEXT SINGLE STATEMENT ONLY
IF (KPDS(3).EQ.211) KRET = 0
KPTR(10) = J
DO 2203 I = 1, J
KBMS(I) = .TRUE.
2203 CONTINUE
C PRINT *,'EXIT FI634'
RETURN
END
C-----------------------------------------------------------------------
SUBROUTINE FI634X(NPTS,NSKP,MSGA,KBMS)
C$$$ SUBPROGRAM DOCUMENTATION BLOCK
C . . . .
C SUBPROGRAM: FI634X EXTRACT BIT MAP
C PRGMMR: IREDELL ORG: W/NP23 DATE: 91-09-19
C
C ABSTRACT: EXTRACT THE PACKED BITMAP INTO A LOGICAL ARRAY.
C
C PROGRAM HISTORY LOG:
C 97-09-19 IREDELL VECTORIZED BITMAP DECODER
C
C USAGE: CALL FI634X(NPTS,NSKP,MSGA,KBMS)
C INPUT ARGUMENT LIST:
C NPTS - INTEGER NUMBER OF POINTS IN THE BITMAP FIELD
C NSKP - INTEGER NUMBER OF BITS TO SKIP IN GRIB MESSAGE
C MSGA - CHARACTER*1 GRIB MESSAGE
C
C OUTPUT ARGUMENT LIST:
C KBMS - LOGICAL*1 BITMAP
C
C REMARKS:
C SUBPROGRAM CAN BE CALLED FROM A MULTIPROCESSING ENVIRONMENT.
C
C ATTRIBUTES:
C LANGUAGE: FORTRAN 77
C MACHINE: CRAY
C
C$$$
CHARACTER*1 MSGA(*)
LOGICAL*1 KBMS(NPTS)
INTEGER ICHK(NPTS)
C - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
CALL GBYTESC(MSGA,ICHK,NSKP,1,0,NPTS)
KBMS=ICHK.NE.0
C - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
END
SUBROUTINE FI635(MSGA,KPTR,KPDS,KGDS,KBMS,DATA,KRET)
C$$$ SUBPROGRAM DOCUMENTATION BLOCK
C . . . .
C SUBPROGRAM: FI635 EXTRACT GRIB DATA ELEMENTS FROM BDS
C PRGMMR: BILL CAVANAUGH ORG: W/NMC42 DATE: 91-09-13
C
C ABSTRACT: EXTRACT GRIB DATA FROM BINARY DATA SECTION AND PLACE
C INTO OUTPUT ARRAY IN PROPER POSITION.
C
C PROGRAM HISTORY LOG:
C 91-09-13 CAVANAUGH
C 94-04-01 CAVANAUGH MODIFIED CODE TO INCLUDE DECIMAL SCALING WHEN
C CALCULATING THE VALUE OF DATA POINTS SPECIFIED
C AS BEING EQUAL TO THE REFERENCE VALUE
C 94-11-10 FARLEY INCREASED MXSIZE FROM 72960 TO 260000
C FOR .5 DEGREE SST ANALYSIS FIELDS
C 95-10-31 IREDELL REMOVED SAVES AND PRINTS
C 98-08-31 IREDELL ELIMINATED NEED FOR MXSIZE
C
C USAGE: CALL FI635(MSGA,KPTR,KPDS,KGDS,KBMS,DATA,KRET)
C INPUT ARGUMENT LIST:
C MSGA - ARRAY CONTAINING GRIB MESSAGE
C KPTR - ARRAY CONTAINING STORAGE FOR FOLLOWING PARAMETERS
C (1) - TOTAL LENGTH OF GRIB MESSAGE
C (2) - LENGTH OF INDICATOR (SECTION 0)
C (3) - LENGTH OF PDS (SECTION 1)
C (4) - LENGTH OF GDS (SECTION 2)
C (5) - LENGTH OF BMS (SECTION 3)
C (6) - LENGTH OF BDS (SECTION 4)
C (7) - VALUE OF CURRENT BYTE
C (8) - BIT POINTER
C (9) - GRIB START BIT NR
C (10) - GRIB/GRID ELEMENT COUNT
C (11) - NR UNUSED BITS AT END OF SECTION 3
C (12) - BIT MAP FLAG
C (13) - NR UNUSED BITS AT END OF SECTION 2
C (14) - BDS FLAGS
C (15) - NR UNUSED BITS AT END OF SECTION 4
C KPDS - ARRAY CONTAINING PDS ELEMENTS.
C SEE INITIAL ROUTINE
C KBMS - BITMAP DESCRIBING LOCATION OF OUTPUT ELEMENTS.
C
C OUTPUT ARGUMENT LIST:
C KBDS - INFORMATION EXTRACTED FROM BINARY DATA SECTION
C KBDS(1) - N1
C KBDS(2) - N2
C KBDS(3) - P1
C KBDS(4) - P2
C KBDS(5) - BIT POINTER TO 2ND ORDER WIDTHS
C KBDS(6) - " " " " " BIT MAPS
C KBDS(7) - " " " FIRST ORDER VALUES
C KBDS(8) - " " " SECOND ORDER VALUES
C KBDS(9) - " " START OF BDS
C KBDS(10) - " " MAIN BIT MAP
C KBDS(11) - BINARY SCALING
C KBDS(12) - DECIMAL SCALING
C KBDS(13) - BIT WIDTH OF FIRST ORDER VALUES
C KBDS(14) - BIT MAP FLAG
C 0 = NO SECOND ORDER BIT MAP
C 1 = SECOND ORDER BIT MAP PRESENT
C KBDS(15) - SECOND ORDER BIT WIDTH
C KBDS(16) - CONSTANT / DIFFERENT WIDTHS
C 0 = CONSTANT WIDTHS
C 1 = DIFFERENT WIDTHS
C KBDS(17) - SINGLE DATUM / MATRIX
C 0 = SINGLE DATUM AT EACH GRID POINT
C 1 = MATRIX OF VALUES AT EACH GRID POINT
C (18-20)- UNUSED
C
C DATA - REAL*4 ARRAY OF GRIDDED ELEMENTS IN GRIB MESSAGE.
C KPTR - ARRAY CONTAINING STORAGE FOR FOLLOWING PARAMETERS
C SEE INPUT LIST
C KRET - ERROR RETURN
C
C REMARKS:
C ERROR RETURN
C 3 = UNPACKED FIELD IS LARGER THAN 65160
C 6 = DOES NOT MATCH NR OF ENTRIES FOR THIS GRIB/GRID
C 7 = NUMBER OF BITS IN FILL TOO LARGE
C
C SUBPROGRAM CAN BE CALLED FROM A MULTIPROCESSING ENVIRONMENT.
C
C ATTRIBUTES:
C LANGUAGE: FORTRAN 77
C MACHINE: HDS9000
C
C$$$
C
CHARACTER*1 MSGA(*)
C
LOGICAL*1 KBMS(*)
C
INTEGER KPDS(*)
INTEGER KGDS(*)
INTEGER KBDS(20)
INTEGER KPTR(*)
INTEGER NRBITS
INTEGER,ALLOCATABLE:: KSAVE(:)
INTEGER KSCALE
C
REAL DATA(*)
REAL REFNCE
REAL SCALE
REAL REALKK
C
C
C CHANGED HEX VALUES TO DECIMAL TO MAKE CODE MORE PORTABLE
C
C *************************************************************
C PRINT *,'ENTER FI635'
C SET UP BIT POINTER
KPTR(8) = KPTR(9) + (KPTR(2)*8) + (KPTR(3)*8) + (KPTR(4)*8)
* + (KPTR(5)*8) + 24
C ------------- EXTRACT FLAGS
C BYTE 4
CALL GBYTEC(MSGA,KPTR(14),KPTR(8),4)
KPTR(8) = KPTR(8) + 4
C --------- NR OF UNUSED BITS IN SECTION 4
CALL GBYTEC(MSGA,KPTR(15),KPTR(8),4)
KPTR(8) = KPTR(8) + 4
KEND = KPTR(9) + (KPTR(2)*8) + (KPTR(3)*8) + (KPTR(4)*8)
* + (KPTR(5)*8) + KPTR(6) * 8 - KPTR(15)
C ------------- GET SCALE FACTOR
C BYTES 5,6
C CHECK SIGN
CALL GBYTEC (MSGA,KSIGN,KPTR(8),1)
KPTR(8) = KPTR(8) + 1
C GET ABSOLUTE SCALE VALUE
CALL GBYTEC (MSGA,KSCALE,KPTR(8),15)
KPTR(8) = KPTR(8) + 15
IF (KSIGN.GT.0) THEN
KSCALE = - KSCALE
END IF
SCALE = 2.0**KSCALE
C ------------ GET REFERENCE VALUE
C BYTES 7,10
C CALL GBYTE (MSGA,KREF,KPTR(8),32)
call gbytec(MSGA,JSGN,KPTR(8),1)
call gbytec(MSGA,JEXP,KPTR(8)+1,7)
call gbytec(MSGA,IFR,KPTR(8)+8,24)
KPTR(8) = KPTR(8) + 32
C
C THE NEXT CODE WILL CONVERT THE IBM370 FLOATING POINT
C TO THE FLOATING POINT USED ON YOUR COMPUTER.
C
C
C PRINT *,109,JSGN,JEXP,IFR
C 109 FORMAT (' JSGN,JEXP,IFR = ',3(1X,Z8))
IF (IFR.EQ.0) THEN
REFNCE = 0.0
ELSE IF (JEXP.EQ.0.AND.IFR.EQ.0) THEN
REFNCE = 0.0
ELSE
REFNCE = FLOAT(IFR) * 16.0 ** (JEXP - 64 - 6)
IF (JSGN.NE.0) REFNCE = - REFNCE
END IF
C PRINT *,'SCALE ',SCALE,' REF VAL ',REFNCE
C ------------- NUMBER OF BITS SPECIFIED FOR EACH ENTRY
C BYTE 11
CALL GBYTEC (MSGA,KBITS,KPTR(8),8)
KPTR(8) = KPTR(8) + 8
KBDS(4) = KBITS
C KBDS(13) = KBITS
IBYT12 = KPTR(8)
C ------------------ IF THERE ARE NO EXTENDED FLAGS PRESENT
C THIS IS WHERE DATA BEGINS AND AND THE PROCESSING
C INCLUDED IN THE FOLLOWING IF...END IF
C WILL BE SKIPPED
C PRINT *,'BASIC FLAGS =',KPTR(14) ,IAND(KPTR(14),1)
IF (IAND(KPTR(14),1).EQ.0) THEN
C PRINT *,'NO EXTENDED FLAGS'
ELSE
C BYTES 12,13
CALL GBYTEC (MSGA,KOCTET,KPTR(8),16)
KPTR(8) = KPTR(8) + 16
C --------------------------- EXTENDED FLAGS
C BYTE 14
CALL GBYTEC (MSGA,KXFLAG,KPTR(8),8)
C PRINT *,'HAVE EXTENDED FLAGS',KXFLAG
KPTR(8) = KPTR(8) + 8
IF (IAND(KXFLAG,16).EQ.0) THEN
C SECOND ORDER VALUES CONSTANT WIDTHS
KBDS(16) = 0
ELSE
C SECOND ORDER VALUES DIFFERENT WIDTHS
KBDS(16) = 1
END IF
IF (IAND (KXFLAG,32).EQ.0) THEN
C NO SECONDARY BIT MAP
KBDS(14) = 0
ELSE
C HAVE SECONDARY BIT MAP
KBDS(14) = 1
END IF
IF (IAND (KXFLAG,64).EQ.0) THEN
C SINGLE DATUM AT GRID POINT
KBDS(17) = 0
ELSE
C MATRIX OF VALUES AT GRID POINT
KBDS(17) = 1
END IF
C ---------------------- NR - FIRST DIMENSION (ROWS) OF EACH MATRIX
C BYTES 15,16
CALL GBYTEC (MSGA,NR,KPTR(8),16)
KPTR(8) = KPTR(8) + 16
C ---------------------- NC - SECOND DIMENSION (COLS) OF EACH MATRIX
C BYTES 17,18
CALL GBYTEC (MSGA,NC,KPTR(8),16)
KPTR(8) = KPTR(8) + 16
C ---------------------- NRV - FIRST DIM COORD VALS
C BYTE 19
CALL GBYTEC (MSGA,NRV,KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C ---------------------- NC1 - NR COEFF'S OR VALUES
C BYTE 20
CALL GBYTEC (MSGA,NC1,KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C ---------------------- NCV - SECOND DIM COORD OR VALUE
C BYTE 21
CALL GBYTEC (MSGA,NCV,KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C ---------------------- NC2 - NR COEFF'S OR VALS
C BYTE 22
CALL GBYTEC (MSGA,NC2,KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C ---------------------- KPHYS1 - FIRST DIM PHYSICAL SIGNIF
C BYTE 23
CALL GBYTEC (MSGA,KPHYS1,KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C ---------------------- KPHYS2 - SECOND DIM PHYSICAL SIGNIF
C BYTE 24
CALL GBYTEC (MSGA,KPHYS2,KPTR(8),8)
KPTR(8) = KPTR(8) + 8
C BYTES 25-N
END IF
IF (KBITS.EQ.0) THEN
C HAVE NO BDS ENTRIES, ALL ENTRIES = REFNCE
SCAL10 = 10.0 ** KPDS(22)
SCAL10 = 1.0 / SCAL10
REFN10 = REFNCE * SCAL10
KENTRY = KPTR(10)
DO 210 I = 1, KENTRY
DATA(I) = 0.0
IF (KBMS(I)) THEN
DATA(I) = REFN10
END IF
210 CONTINUE
GO TO 900
END IF
C PRINT *,'KEND ',KEND,' KPTR(8) ',KPTR(8),'KBITS ',KBITS
KNR = (KEND - KPTR(8)) / KBITS
C PRINT *,'NUMBER OF ENTRIES IN DATA ARRAY',KNR
C --------------------
C CYCLE THRU BDS UNTIL HAVE USED ALL (SPECIFIED NUMBER)
C ENTRIES.
C ------------- UNUSED BITS IN DATA AREA
C NUMBER OF BYTES IN DATA AREA
NRBYTE = KPTR(6) - 11
C ------------- TOTAL NR OF USABLE BITS
NRBITS = NRBYTE * 8 - KPTR(15)
C ------------- TOTAL NR OF ENTRIES
KENTRY = NRBITS / KBITS
C ALLOCATE KSAVE
ALLOCATE(KSAVE(KENTRY))
C
C IF (IAND(KPTR(14),2).EQ.0) THEN
C PRINT *,'SOURCE VALUES IN FLOATING POINT'
C ELSE
C PRINT *,'SOURCE VALUES IN INTEGER'
C END IF
C
IF (IAND(KPTR(14),8).EQ.0) THEN
C PRINT *,'PROCESSING GRID POINT DATA'
IF (IAND(KPTR(14),4).EQ.0) THEN
C PRINT *,' WITH SIMPLE PACKING'
IF (IAND(KPTR(14),1).EQ.0) THEN
C PRINT *,' WITH NO ADDITIONAL FLAGS'
GO TO 4000
ELSE IF (IAND(KPTR(14),1).NE.0) THEN
C PRINT *,' WITH ADDITIONAL FLAGS',KXFLAG
IF (KBDS(17).EQ.0) THEN
C PRINT *,' SINGLE DATUM EACH GRID PT'
IF (KBDS(14).EQ.0) THEN
C PRINT *,' NO SEC BIT MAP'
IF (KBDS(16).EQ.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES CONSTANT WIDTH'
ELSE IF (KBDS(16).NE.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES DIFFERENT WIDTHS'
END IF
ELSE IF (KBDS(14).NE.0) THEN
C PRINT *,' SEC BIT MAP'
IF (KBDS(16).EQ.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES CONSTANT WIDTH'
ELSE IF (KBDS(16).NE.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES DIFFERENT WIDTHS'
END IF
END IF
ELSE IF (KBDS(17).NE.0) THEN
C PRINT *,' MATRIX OF VALS EACH PT'
IF (KBDS(14).EQ.0) THEN
C PRINT *,' NO SEC BIT MAP'
IF (KBDS(16).EQ.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES CONSTANT WIDTH'
ELSE IF (KBDS(16).NE.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES DIFFERENT WIDTHS'
END IF
ELSE IF (KBDS(14).NE.0) THEN
C PRINT *,' SEC BIT MAP'
IF (KBDS(16).EQ.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES CONSTANT WIDTH'
ELSE IF (KBDS(16).NE.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES DIFFERENT WIDTHS'
END IF
END IF
END IF
END IF
ELSE IF (IAND(KPTR(14),4).NE.0) THEN
C PRINT *,' WITH COMPLEX/SECOND ORDER PACKING'
IF (IAND(KPTR(14),1).EQ.0) THEN
C PRINT *,' WITH NO ADDITIONAL FLAGS'
ELSE IF (IAND(KPTR(14),1).NE.0) THEN
C PRINT *,' WITH ADDITIONAL FLAGS'
IF (KBDS(17).EQ.0) THEN
C PRINT *,' SINGLE DATUM AT EACH PT'
IF (KBDS(14).EQ.0) THEN
C PRINT *,' NO SEC BIT MAP'
IF (KBDS(16).EQ.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES CONSTANT WIDTH'
ELSE IF (KBDS(16).NE.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES DIFFERENT WIDTHS'
END IF
C ROW BY ROW - COL BY COL
CALL FI636 (DATA,MSGA,KBMS,
* REFNCE,KPTR,KPDS,KGDS)
GO TO 900
ELSE IF (KBDS(14).NE.0) THEN
C PRINT *,' SEC BIT MAP'
IF (KBDS(16).EQ.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES CONSTANT WIDTH'
ELSE IF (KBDS(16).NE.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES DIFFERENT WIDTHS'
END IF
CALL FI636 (DATA,MSGA,KBMS,
* REFNCE,KPTR,KPDS,KGDS)
GO TO 900
END IF
ELSE IF (KBDS(17).NE.0) THEN
C PRINT *,' MATRIX OF VALS EACH PT'
IF (KBDS(14).EQ.0) THEN
C PRINT *,' NO SEC BIT MAP'
IF (KBDS(16).EQ.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES CONSTANT WIDTH'
ELSE IF (KBDS(16).NE.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES DIFFERENT WIDTHS'
END IF
ELSE IF (KBDS(14).NE.0) THEN
C PRINT *,' SEC BIT MAP'
IF (KBDS(16).EQ.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES CONSTANT WIDTH'
ELSE IF (KBDS(16).NE.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES DIFFERENT WIDTHS'
END IF
END IF
END IF
END IF
END IF
ELSE IF (IAND(KPTR(14),8).NE.0) THEN
C PRINT *,'PROCESSING SPHERICAL HARMONIC COEFFICIENTS'
IF (IAND(KPTR(14),4).EQ.0) THEN
C PRINT *,' WITH SIMPLE PACKING'
IF (IAND(KPTR(14),1).EQ.0) THEN
C PRINT *,' WITH NO ADDITIONAL FLAGS'
GO TO 5000
ELSE IF (IAND(KPTR(14),1).NE.0) THEN
C PRINT *,' WITH ADDITIONAL FLAGS'
IF (KBDS(17).EQ.0) THEN
C PRINT *,' SINGLE DATUM EACH GRID PT'
IF (KBDS(14).EQ.0) THEN
C PRINT *,' NO SEC BIT MAP'
IF (KBDS(16).EQ.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES CONSTANT WIDTH'
ELSE IF (KBDS(16).NE.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES DIFFERENT WIDTHS'
END IF
ELSE IF (KBDS(14).NE.0) THEN
C PRINT *,' SEC BIT MAP'
IF (KBDS(16).EQ.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES CONSTANT WIDTH'
ELSE IF (KBDS(16).NE.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES DIFFERENT WIDTHS'
END IF
END IF
ELSE IF (KBDS(17).NE.0) THEN
C PRINT *,' MATRIX OF VALS EACH PT'
IF (KBDS(14).EQ.0) THEN
C PRINT *,' NO SEC BIT MAP'
IF (KBDS(16).EQ.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES CONSTANT WIDTH'
ELSE IF (KBDS(16).NE.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES DIFFERENT WIDTHS'
END IF
ELSE IF (KBDS(14).NE.0) THEN
C PRINT *,' SEC BIT MAP'
IF (KBDS(16).EQ.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES CONSTANT WIDTH'
ELSE IF (KBDS(16).NE.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES DIFFERENT WIDTHS'
END IF
END IF
END IF
END IF
ELSE IF (IAND(KPTR(14),4).NE.0) THEN
C COMPLEX/SECOND ORDER PACKING
C PRINT *,' WITH COMPLEX/SECOND ORDER PACKING'
IF (IAND(KPTR(14),1).EQ.0) THEN
C PRINT *,' WITH NO ADDITIONAL FLAGS'
ELSE IF (IAND(KPTR(14),1).NE.0) THEN
C PRINT *,' WITH ADDITIONAL FLAGS'
IF (KBDS(17).EQ.0) THEN
C PRINT *,' SINGLE DATUM EACH GRID PT'
IF (KBDS(14).EQ.0) THEN
C PRINT *,' NO SEC BIT MAP'
IF (KBDS(16).EQ.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES CONSTANT WIDTH'
ELSE IF (KBDS(16).NE.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES DIFFERENT WIDTHS'
END IF
ELSE IF (KBDS(14).NE.0) THEN
C PRINT *,' SEC BIT MAP'
IF (KBDS(16).EQ.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES CONSTANT WIDTH'
ELSE IF (KBDS(16).NE.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES DIFFERENT WIDTHS'
END IF
END IF
ELSE IF (KBDS(17).NE.0) THEN
C PRINT *,' MATRIX OF VALS EACH PT'
IF (KBDS(14).EQ.0) THEN
C PRINT *,' NO SEC BIT MAP'
IF (KBDS(16).EQ.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES CONSTANT WIDTH'
ELSE IF (KBDS(16).NE.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES DIFFERENT WIDTHS'
END IF
ELSE IF (KBDS(14).NE.0) THEN
C PRINT *,' SEC BIT MAP'
IF (KBDS(16).EQ.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES CONSTANT WIDTH'
ELSE IF (KBDS(16).NE.0) THEN
C PRINT *,' SECOND ORDER',
C * ' VALUES DIFFERENT WIDTHS'
END IF
END IF
END IF
END IF
END IF
END IF
IF(ALLOCATED(KSAVE)) DEALLOCATE(KSAVE)
C PRINT *,' NOT PROCESSED - NOT PROCESSED - NOT PROCESSED'
KRET = 11
RETURN
4000 CONTINUE
C ****************************************************************
C
C GRID POINT DATA, SIMPLE PACKING, FLOATING POINT, NO ADDN'L FLAGS
C
SCAL10 = 10.0 ** KPDS(22)
SCAL10 = 1.0 / SCAL10
IF (KPDS(3).EQ.23.OR.KPDS(3).EQ.24.OR.KPDS(3).EQ.26.
* OR.KPDS(3).EQ.63.OR.KPDS(3).EQ.64) THEN
IF (KPDS(3).EQ.26) THEN
KADD = 72
ELSE IF (KPDS(3).EQ.63.OR.KPDS(3).EQ.64) THEN
KADD = 91
ELSE
KADD = 37
END IF
CALL GBYTESC (MSGA,KSAVE,KPTR(8),KBITS,0,KNR)
KPTR(8) = KPTR(8) + KBITS * KNR
II = 1
KENTRY = KPTR(10)
DO 4001 I = 1, KENTRY
IF (KBMS(I)) THEN
DATA(I) = (REFNCE+FLOAT(KSAVE(II))*SCALE)*SCAL10
II = II + 1
ELSE
DATA(I) = 0.0
END IF
4001 CONTINUE
DO 4002 I = 2, KADD
DATA(I) = DATA(1)
4002 CONTINUE
ELSE IF (KPDS(3).EQ.21.OR.KPDS(3).EQ.22.OR.KPDS(3).EQ.25.
* OR.KPDS(3).EQ.61.OR.KPDS(3).EQ.62) THEN
CALL GBYTESC (MSGA,KSAVE,KPTR(8),KBITS,0,KNR)
II = 1
KENTRY = KPTR(10)
DO 4011 I = 1, KENTRY
IF (KBMS(I)) THEN
DATA(I) = (REFNCE + FLOAT(KSAVE(II)) * SCALE) * SCAL10
II = II + 1
ELSE
DATA(I) = 0.0
END IF
4011 CONTINUE
IF (KPDS(3).EQ.25) THEN
KADD = 71
ELSE IF (KPDS(3).EQ.61.OR.KPDS(3).EQ.62) THEN
KADD = 90
ELSE
KADD = 36
END IF
LASTP = KENTRY - KADD
DO 4012 I = LASTP+1, KENTRY
DATA(I) = DATA(LASTP)
4012 CONTINUE
ELSE
CALL GBYTESC (MSGA,KSAVE,KPTR(8),KBITS,0,KNR)
II = 1
KENTRY = KPTR(10)
DO 500 I = 1, KENTRY
IF (KBMS(I)) THEN
DATA(I) = (REFNCE + FLOAT(KSAVE(II)) * SCALE) * SCAL10
II = II + 1
ELSE
DATA(I) = 0.0
END IF
500 CONTINUE
END IF
GO TO 900
C ------------- PROCESS SPHERICAL HARMONIC COEFFICIENTS,
C SIMPLE PACKING, FLOATING POINT, NO ADDN'L FLAGS
5000 CONTINUE
C PRINT *,'CHECK POINT SPECTRAL COEFF'
KPTR(8) = IBYT12
C CALL GBYTE (MSGA,KKK,KPTR(8),32)
call gbytec(MSGA,JSGN,KPTR(8),1)
call gbytec(MSGA,JEXP,KPTR(8)+1,7)
call gbytec(MSGA,IFR,KPTR(8)+8,24)
KPTR(8) = KPTR(8) + 32
C
C THE NEXT CODE WILL CONVERT THE IBM370 FOATING POINT
C TO THE FLOATING POINT USED ON YOUR MACHINE.
C
IF (IFR.EQ.0) THEN
REALKK = 0.0
ELSE IF (JEXP.EQ.0.AND.IFR.EQ.0) THEN
REALKK = 0.0
ELSE
REALKK = FLOAT(IFR) * 16.0 ** (JEXP - 64 - 6)
IF (JSGN.NE.0) REALKK = -REALKK
END IF
DATA(1) = REALKK
CALL GBYTESC (MSGA,KSAVE,KPTR(8),KBITS,0,KNR)
C --------------
DO 6000 I = 1, KENTRY
DATA(I+1) = REFNCE + FLOAT(KSAVE(I)) * SCALE
6000 CONTINUE
900 CONTINUE
IF(ALLOCATED(KSAVE)) DEALLOCATE(KSAVE)
C PRINT *,'EXIT FI635'
RETURN
END
SUBROUTINE FI636 (DATA,MSGA,KBMS,REFNCE,KPTR,KPDS,KGDS)
C$$$ SUBPROGRAM DOCUMENTATION BLOCK
C . . . .
C SUBPROGRAM: FI636 PROCESS SECOND ORDER PACKING
C PRGMMR: CAVANAUGH ORG: W/NMC42 DATE: 92-09-22
C
C ABSTRACT: PROCESS SECOND ORDER PACKING FROM THE BINARY DATA SECTION
C (BDS) FOR SINGLE DATA ITEMS GRID POINT DATA
C
C PROGRAM HISTORY LOG:
C 93-06-08 CAVANAUGH
C 93-12-15 CAVANAUGH MODIFIED SECOND ORDER POINTERS TO FIRST ORDER
C VALUES AND SECOND ORDER VALUES CORRECTLY.
C 95-04-26 R.E.JONES FI636 CORECTION FOR 2ND ORDER COMPLEX
C UNPACKING.
C 95-10-31 IREDELL REMOVED SAVES AND PRINTS
C
C USAGE: CALL FI636 (DATA,MSGA,KBMS,REFNCE,KPTR,KPDS,KGDS)
C INPUT ARGUMENT LIST:
C
C MSGA - ARRAY CONTAINING GRIB MESSAGE
C REFNCE - REFERENCE VALUE
C KPTR - WORK ARRAY
C
C OUTPUT ARGUMENT LIST: (INCLUDING WORK ARRAYS)
C DATA - LOCATION OF OUTPUT ARRAY
C WORKING ARRAY
C KBDS(1) - N1
C KBDS(2) - N2
C KBDS(3) - P1
C KBDS(4) - P2
C KBDS(5) - BIT POINTER TO 2ND ORDER WIDTHS
C KBDS(6) - " " " " " BIT MAPS
C KBDS(7) - " " " FIRST ORDER VALUES
C KBDS(8) - " " " SECOND ORDER VALUES
C KBDS(9) - " " START OF BDS
C KBDS(10) - " " MAIN BIT MAP
C KBDS(11) - BINARY SCALING
C KBDS(12) - DECIMAL SCALING
C KBDS(13) - BIT WIDTH OF FIRST ORDER VALUES
C KBDS(14) - BIT MAP FLAG
C 0 = NO SECOND ORDER BIT MAP
C 1 = SECOND ORDER BIT MAP PRESENT
C KBDS(15) - SECOND ORDER BIT WIDTH
C KBDS(16) - CONSTANT / DIFFERENT WIDTHS
C 0 = CONSTANT WIDTHS
C 1 = DIFFERENT WIDTHS
C KBDS(17) - SINGLE DATUM / MATRIX
C 0 = SINGLE DATUM AT EACH GRID POINT
C 1 = MATRIX OF VALUES AT EACH GRID POINT
C (18-20)- UNUSED
C
C REMARKS: SUBPROGRAM CAN BE CALLED FROM A MULTIPROCESSING ENVIRONMENT.
C
C ATTRIBUTES:
C LANGUAGE: FORTRAN 77
C MACHINE: HDS, CRAY
C
C$$$
REAL DATA(*)
REAL REFN
REAL REFNCE
C
INTEGER KBDS(20)
INTEGER KPTR(*)
character(len=1) BMAP2(1000000)
INTEGER I,IBDS
INTEGER KBIT,IFOVAL,ISOVAL
INTEGER KPDS(*),KGDS(*)
C
LOGICAL*1 KBMS(*)
C
CHARACTER*1 MSGA(*)
C
C ******************* SETUP ******************************
C PRINT *,'ENTER FI636'
C START OF BMS (BIT POINTER)
DO I = 1,20
KBDS(I) = 0
END DO
C BYTE START OF BDS
IBDS = KPTR(2) + KPTR(3) + KPTR(4) + KPTR(5)
C PRINT *,'KPTR(2-5) ',KPTR(2),KPTR(3),KPTR(4),KPTR(5)
C BIT START OF BDS
JPTR = IBDS * 8
C PRINT *,'JPTR ',JPTR
KBDS(9) = JPTR
C PRINT *,'START OF BDS ',KBDS(9)
C BINARY SCALE VALUE BDS BYTES 5-6
CALL GBYTEC (MSGA,ISIGN,JPTR+32,1)
CALL GBYTEC (MSGA,KBDS(11),JPTR+33,15)
IF (ISIGN.GT.0) THEN
KBDS(11) = - KBDS(11)
END IF
C PRINT *,'BINARY SCALE VALUE =',KBDS(11)
C EXTRACT REFERENCE VALUE
C CALL GBYTEC(MSGA,JREF,JPTR+48,32)
call gbytec(MSGA,JSGN,KPTR(8),1)
call gbytec(MSGA,JEXP,KPTR(8)+1,7)
call gbytec(MSGA,IFR,KPTR(8)+8,24)
IF (IFR.EQ.0) THEN
REFNCE = 0.0
ELSE IF (JEXP.EQ.0.AND.IFR.EQ.0) THEN
REFNCE = 0.0
ELSE
REFNCE = FLOAT(IFR) * 16.0 ** (JEXP - 64 - 6)
IF (JSGN.NE.0) REFNCE = - REFNCE
END IF
C PRINT *,'DECODED REFERENCE VALUE =',REFN,REFNCE
C F O BIT WIDTH
CALL GBYTEC(MSGA,KBDS(13),JPTR+80,8)
JPTR = JPTR + 88
C AT START OF BDS BYTE 12
C EXTRACT N1
CALL GBYTEC (MSGA,KBDS(1),JPTR,16)
C PRINT *,'N1 = ',KBDS(1)
JPTR = JPTR + 16
C EXTENDED FLAGS
CALL GBYTEC (MSGA,KFLAG,JPTR,8)
C ISOLATE BIT MAP FLAG
IF (IAND(KFLAG,32).NE.0) THEN
KBDS(14) = 1
ELSE
KBDS(14) = 0
END IF
IF (IAND(KFLAG,16).NE.0) THEN
KBDS(16) = 1
ELSE
KBDS(16) = 0
END IF
IF (IAND(KFLAG,64).NE.0) THEN
KBDS(17) = 1
ELSE
KBDS(17) = 0
END IF
JPTR = JPTR + 8
C EXTRACT N2
CALL GBYTEC (MSGA,KBDS(2),JPTR,16)
C PRINT *,'N2 = ',KBDS(2)
JPTR = JPTR + 16
C EXTRACT P1
CALL GBYTEC (MSGA,KBDS(3),JPTR,16)
C PRINT *,'P1 = ',KBDS(3)
JPTR = JPTR + 16
C EXTRACT P2
CALL GBYTEC (MSGA,KBDS(4),JPTR,16)
C PRINT *,'P2 = ',KBDS(4)
JPTR = JPTR + 16
C SKIP RESERVED BYTE
JPTR = JPTR + 8
C START OF SECOND ORDER BIT WIDTHS
KBDS(5) = JPTR
C COMPUTE START OF SECONDARY BIT MAP
IF (KBDS(14).NE.0) THEN
C FOR INCLUDED SECONDARY BIT MAP
JPTR = JPTR + (KBDS(3) * 8)
KBDS(6) = JPTR
ELSE
C FOR CONSTRUCTED SECONDARY BIT MAP
KBDS(6) = 0
END IF
C CREATE POINTER TO START OF FIRST ORDER VALUES
KBDS(7) = KBDS(9) + KBDS(1) * 8 - 8
C PRINT *,'BIT POINTER TO START OF FOVALS',KBDS(7)
C CREATE POINTER TO START OF SECOND ORDER VALUES
KBDS(8) = KBDS(9) + KBDS(2) * 8 - 8
C PRINT *,'BIT POINTER TO START OF SOVALS',KBDS(8)
C PRINT *,'KBDS( 1) - N1 ',KBDS( 1)
C PRINT *,'KBDS( 2) - N2 ',KBDS( 2)
C PRINT *,'KBDS( 3) - P1 ',KBDS( 3)
C PRINT *,'KBDS( 4) - P2 ',KBDS( 4)
C PRINT *,'KBDS( 5) - BIT PTR - 2ND ORDER WIDTHS ',KBDS( 5)
C PRINT *,'KBDS( 6) - " " " " BIT MAPS ',KBDS( 6)
C PRINT *,'KBDS( 7) - " " F O VALS ',KBDS( 7)
C PRINT *,'KBDS( 8) - " " S O VALS ',KBDS( 8)
C PRINT *,'KBDS( 9) - " " START OF BDS ',KBDS( 9)
C PRINT *,'KBDS(10) - " " MAIN BIT MAP ',KBDS(10)
C PRINT *,'KBDS(11) - BINARY SCALING ',KBDS(11)
C PRINT *,'KPDS(22) - DECIMAL SCALING ',KPDS(22)
C PRINT *,'KBDS(13) - FO BIT WIDTH ',KBDS(13)
C PRINT *,'KBDS(14) - 2ND ORDER BIT MAP FLAG ',KBDS(14)
C PRINT *,'KBDS(15) - 2ND ORDER BIT WIDTH ',KBDS(15)
C PRINT *,'KBDS(16) - CONSTANT/DIFFERENT WIDTHS ',KBDS(16)
C PRINT *,'KBDS(17) - SINGLE DATUM/MATRIX ',KBDS(17)
C PRINT *,'REFNCE VAL ',REFNCE
C ************************* PROCESS DATA **********************
IJ = 0
C ========================================================
IF (KBDS(14).EQ.0) THEN
C NO BIT MAP, MUST CONSTRUCT ONE
IF (KGDS(2).EQ.65535) THEN
IF (KGDS(20).EQ.255) THEN
C PRINT *,'CANNOT BE USED HERE'
ELSE
C POINT TO PL
LP = KPTR(9) + KPTR(2)*8 + KPTR(3)*8 + KGDS(20)*8 - 8
C PRINT *,'LP = ',LP
JT = 0
DO 2000 JZ = 1, KGDS(3)
C GET NUMBER IN CURRENT ROW
CALL GBYTEC (MSGA,NUMBER,LP,16)
C INCREMENT TO NEXT ROW NUMBER
LP = LP + 16
C PRINT *,'NUMBER IN ROW',JZ,' = ',NUMBER
DO 1500 JQ = 1, NUMBER
IF (JQ.EQ.1) THEN
CALL SBYTEC (BMAP2,1,JT,1)
ELSE
CALL SBYTEC (BMAP2,0,JT,1)
END IF
JT = JT + 1
1500 CONTINUE
2000 CONTINUE
END IF
ELSE
IF (IAND(KGDS(11),32).EQ.0) THEN
C ROW BY ROW
C PRINT *,' ROW BY ROW'
KOUT = KGDS(3)
KIN = KGDS(2)
ELSE
C COL BY COL
C PRINT *,' COL BY COL'
KIN = KGDS(3)
KOUT = KGDS(2)
END IF
C PRINT *,'KIN=',KIN,' KOUT= ',KOUT
DO 200 I = 1, KOUT
DO 150 J = 1, KIN
IF (J.EQ.1) THEN
CALL SBYTE (BMAP2,1,IJ,1)
ELSE
CALL SBYTE (BMAP2,0,IJ,1)
END IF
IJ = IJ + 1
150 CONTINUE
200 CONTINUE
END IF
END IF
C ========================================================
C PRINT 99,(BMAP2(J),J=1,110)
C99 FORMAT ( 10(1X,Z8.8))
C CALL BINARY (BMAP2,2)
C FOR EACH GRID POINT ENTRY
C
SCALE2 = 2.0**KBDS(11)
SCAL10 = 10.0**KPDS(22)
C PRINT *,'SCALE VALUES - ',SCALE2,SCAL10
DO 1000 I = 1, KPTR(10)
C GET NEXT MASTER BIT MAP BIT POSITION
C IF NEXT MASTER BIT MAP BIT POSITION IS 'ON' (1)
IF (KBMS(I)) THEN
C WRITE(6,900)I,KBMS(I)
C 900 FORMAT (1X,I4,3X,14HMAIN BIT IS ON,3X,L4)
IF (KBDS(14).NE.0) THEN
CALL GBYTEC (MSGA,KBIT,KBDS(6),1)
ELSE
CALL GBYTEC (BMAP2,KBIT,KBDS(6),1)
END IF
C PRINT *,'KBDS(6) =',KBDS(6),' KBIT =',KBIT
KBDS(6) = KBDS(6) + 1
IF (KBIT.NE.0) THEN
C PRINT *,' SOB ON'
C GET NEXT FIRST ORDER PACKED VALUE
CALL GBYTEC (MSGA,IFOVAL,KBDS(7),KBDS(13))
KBDS(7) = KBDS(7) + KBDS(13)
C PRINT *,'FOVAL =',IFOVAL
C GET SECOND ORDER BIT WIDTH
CALL GBYTEC (MSGA,KBDS(15),KBDS(5),8)
KBDS(5) = KBDS(5) + 8
C PRINT *,KBDS(7)-KBDS(13),' FOVAL =',IFOVAL,' KBDS(5)=',
C * ,KBDS(5), 'ISOWID =',KBDS(15)
ELSE
C PRINT *,' SOB NOT ON'
END IF
ISOVAL = 0
IF (KBDS(15).EQ.0) THEN
C IF SECOND ORDER BIT WIDTH = 0
C THEN SECOND ORDER VALUE IS 0
C SO CALCULATE DATA VALUE FOR THIS POINT
C DATA(I) = (REFNCE + (FLOAT(IFOVAL) * SCALE2)) / SCAL10
ELSE
CALL GBYTEC (MSGA,ISOVAL,KBDS(8),KBDS(15))
KBDS(8) = KBDS(8) + KBDS(15)
END IF
DATA(I) = (REFNCE + (FLOAT(IFOVAL + ISOVAL) *
* SCALE2)) / SCAL10
C PRINT *,I,DATA(I),REFNCE,IFOVAL,ISOVAL,SCALE2,SCAL10
ELSE
C WRITE(6,901) I,KBMS(I)
C 901 FORMAT (1X,I4,3X,15HMAIN BIT NOT ON,3X,L4)
DATA(I) = 0.0
END IF
C PRINT *,I,DATA(I),IFOVAL,ISOVAL,KBDS(5),KBDS(15)
1000 CONTINUE
C **************************************************************
C PRINT *,'EXIT FI636'
RETURN
END
SUBROUTINE FI637(J,KPDS,KGDS,KRET)
C$$$ SUBPROGRAM DOCUMENTATION BLOCK
C . . . .
C SUBPROGRAM: FI637 GRIB GRID/SIZE TEST
C PRGMMR: CAVANAUGH ORG: W/NMC42 DATE: 91-09-13
C
C ABSTRACT: TO TEST WHEN GDS IS AVAILABLE TO SEE IF SIZE MISMATCH
C ON EXISTING GRIDS (BY CENTER) IS INDICATED
C
C PROGRAM HISTORY LOG:
C 91-09-13 CAVANAUGH
C 95-10-31 IREDELL REMOVED SAVES AND PRINTS
C 97-02-12 W BOSTELMAN CORRECTS ECMWF US GRID 2 PROCESSING
C 98-06-17 IREDELL REMOVED ALTERNATE RETURN
C 99-01-20 BALDWIN MODIFY TO HANDLE GRID 237
C
C USAGE: CALL FI637(J,KPDS,KGDS,KRET)
C INPUT ARGUMENT LIST:
C J - SIZE FOR INDICATED GRID
C KPDS -
C KGDS -
C
C OUTPUT ARGUMENT LIST: (INCLUDING WORK ARRAYS)
C J - SIZE FOR INDICATED GRID MODIFIED FOR ECMWF-US 2
C KRET - ERROR RETURN
C (A MISMATCH WAS DETECTED IF KRET IS NOT ZERO)
C
C REMARKS:
C KRET -
C = 9 - GDS INDICATES SIZE MISMATCH WITH STD GRID
C
C SUBPROGRAM CAN BE CALLED FROM A MULTIPROCESSING ENVIRONMENT.
C
C ATTRIBUTES:
C LANGUAGE: FORTRAN 77
C MACHINE: HDS
C
C$$$
INTEGER KPDS(*)
INTEGER KGDS(*)
INTEGER J
INTEGER I
C ---------------------------------------
C ---------------------------------------
C IF GDS NOT INDICATED, RETURN
C ----------------------------------------
KRET=0
IF (IAND(KPDS(4),128).EQ.0) RETURN
C ---------------------------------------
C GDS IS INDICATED, PROCEED WITH TESTING
C ---------------------------------------
IF (KGDS(2).EQ.65535) THEN
RETURN
END IF
KRET=1
I = KGDS(2) * KGDS(3)
C ---------------------------------------
C INTERNATIONAL SET
C ---------------------------------------
IF (KPDS(3).GE.21.AND.KPDS(3).LE.26) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).GE.37.AND.KPDS(3).LE.44) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).EQ.50) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).GE.61.AND.KPDS(3).LE.64) THEN
IF (I.NE.J) THEN
RETURN
END IF
C ---------------------------------------
C TEST ECMWF CONTENT
C ---------------------------------------
ELSE IF (KPDS(1).EQ.98) THEN
KRET = 9
IF (KPDS(3).GE.1.AND.KPDS(3).LE.16) THEN
IF (I.NE.J) THEN
IF (KPDS(3) .NE. 2) THEN
RETURN
ELSEIF (I .NE. 10512) THEN ! Test for US Grid 2
RETURN
END IF
J = I ! Set to US Grid 2, 2.5 Global
END IF
ELSE
KRET = 5
RETURN
END IF
C ---------------------------------------
C U.K. MET OFFICE, BRACKNELL
C ---------------------------------------
ELSE IF (KPDS(1).EQ.74) THEN
KRET = 9
IF (KPDS(3).GE.25.AND.KPDS(3).LE.26) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE
KRET = 5
RETURN
END IF
C ---------------------------------------
C CANADA
C ---------------------------------------
ELSE IF (KPDS(1).EQ.54) THEN
C PRINT *,' NO CURRENT LISTING OF CANADIAN GRIDS'
RETURN
C ---------------------------------------
C JAPAN METEOROLOGICAL AGENCY
C ---------------------------------------
ELSE IF (KPDS(1).EQ.34) THEN
C PRINT *,' NO CURRENT LISTING OF JMA GRIDS'
RETURN
C ---------------------------------------
C NAVY - FNOC
C ---------------------------------------
ELSE IF (KPDS(1).EQ.58) THEN
IF (KPDS(3).GE.37.AND.KPDS(3).LE.44) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).GE.220.AND.KPDS(3).LE.221) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).EQ.223) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE
KRET = 5
RETURN
END IF
C ---------------------------------------
C U.S. GRIDS
C ---------------------------------------
ELSE IF (KPDS(1).EQ.7) THEN
KRET = 9
IF (KPDS(3).GE.1.AND.KPDS(3).LE.4) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).EQ.5.OR.KPDS(3).EQ.6) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).EQ.8) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).GE.27.AND.KPDS(3).LE.30) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).GE.33.AND.KPDS(3).LE.34) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).GE.37.AND.KPDS(3).LE.44) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).EQ.53) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).GE.55.AND.KPDS(3).LE.56) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).GE.67.AND.KPDS(3).LE.77) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).GE.85.AND.KPDS(3).LE.86) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).EQ.87) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).GE.90.AND.KPDS(3).LE.98) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).EQ.100.OR.KPDS(3).EQ.101) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).GE.103.AND.KPDS(3).LE.107) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).EQ.126) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).EQ.190.OR.KPDS(3).EQ.192) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).EQ.194.OR.KPDS(3).EQ.196) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).EQ.198) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE IF (KPDS(3).GE.201.AND.KPDS(3).LE.250) THEN
IF (I.NE.J) THEN
RETURN
END IF
ELSE
KRET = 5
RETURN
END IF
ELSE
KRET = 10
RETURN
END IF
C ------------------------------------
C NORMAL EXIT
C ------------------------------------
KRET = 0
RETURN
END
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