368 lines
12 KiB
FortranFixed
368 lines
12 KiB
FortranFixed
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SUBROUTINE W3FI74 (IGDS,ICOMP,GDS,LENGDS,NPTS,IGERR)
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C$$$ SUBPROGRAM DOCUMENTATION BLOCK
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C . . . .
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C SUBPROGRAM: W3FI74 CONSTRUCT GRID DEFINITION SECTION (GDS)
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C PRGMMR: FARLEY ORG: W/NMC42 DATE: 93-08-24
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C
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C ABSTRACT: THIS SUBROUTINE CONSTRUCTS A GRIB GRID DEFINITION
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C SECTION.
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C
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C PROGRAM HISTORY LOG:
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C 92-07-07 M. FARLEY ORIGINAL AUTHOR
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C 92-10-16 R.E.JONES ADD CODE TO LAT/LON SECTION TO DO
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C GAUSSIAN GRIDS.
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C 93-03-29 R.E.JONES ADD SAVE STATEMENT
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C 93-08-24 R.E.JONES CHANGES FOR GRIB GRIDS 37-44
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C 93-09-29 R.E.JONES CHANGES FOR GAUSSIAN GRID FOR DOCUMENT
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C CHANGE IN W3FI71.
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C 94-02-15 R.E.JONES CHANGES FOR ETA MODEL GRIDS 90-93
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C 95-04-20 R.E.JONES CHANGE 200 AND 201 TO 201 AND 202
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C 95-10-31 IREDELL REMOVED SAVES AND PRINTS
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C 98-08-20 BALDWIN ADD TYPE 203
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C
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C
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C USAGE: CALL W3FI74 (IGDS, ICOMP, GDS, LENGDS, NPTS, IGERR)
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C INPUT ARGUMENT LIST:
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C IGDS - INTEGER ARRAY SUPPLIED BY W3FI71
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C ICOMP - TABLE 7- RESOLUTION & COMPONENT FLAG (BIT 5)
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C FOR GDS(17) WIND COMPONENTS
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C
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C OUTPUT ARGUMENT LIST:
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C GDS - COMPLETED GRIB GRID DEFINITION SECTION
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C LENGDS - LENGTH OF GDS
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C NPTS - NUMBER OF POINTS IN GRID
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C IGERR - 1, GRID REPRESENTATION TYPE NOT VALID
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C
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C REMARKS: SUBPROGRAM CAN BE CALLED FROM A MULTIPROCESSING ENVIRONMENT.
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C
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C ATTRIBUTES:
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C LANGUAGE: CRAY CFT77 FORTRAN 77, IBM370 VS FORTRAN
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C MACHINE: CRAY C916-128, CRAY Y-MP8/864, CRAY Y-MP EL2/256, HDS
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C
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C$$$
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C
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INTEGER IGDS (*)
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C
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CHARACTER*1 GDS (*)
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C
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C ================================= RCS keyword statements ==========
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CHARACTER*68 RCSKW1,RCSKW2
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DATA RCSKW1,RCSKW2 / '
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.$Source: /fs/hseb/ob72/wfo_rfc/precip_proc/source/gribit/src/RCS/w3fi74.f,v $
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. $', '
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.$Id: w3fi74.f,v 1.1 2006/05/03 13:44:00 gsood Exp $
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. $' /
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C ===================================================================
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C
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C
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ISUM = 0
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IGERR = 0
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C
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C PRINT *,' '
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C PRINT *,'(W3FI74-IGDS = )'
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C PRINT *,(IGDS(I),I=1,18)
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C PRINT *,' '
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C
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C COMPUTE LENGTH OF GDS IN OCTETS (OCTETS 1-3)
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C LENGTH = 32 FOR LAT/LON, GNOMIC, GAUSIAN LAT/LON,
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C POLAR STEREOGRAPHIC, SPHERICAL HARMONICS
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C LENGTH = 42 FOR MERCATOR, LAMBERT, TANGENT CONE
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C LENGTH = 178 FOR MERCATOR, LAMBERT, TANGENT CONE
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C
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IF (IGDS(3) .EQ. 0 .OR. IGDS(3) .EQ. 2 .OR.
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& IGDS(3) .EQ. 4 .OR. IGDS(3) .EQ. 5 .OR.
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& IGDS(3) .EQ. 50 .OR. IGDS(3) .EQ. 201.OR.
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& IGDS(3) .EQ. 202.OR. IGDS(3) .EQ. 203) THEN
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LENGDS = 32
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C
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C CORRECTION FOR GRIDS 37-44
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C
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IF (IGDS(3).EQ.0.AND.IGDS(1).EQ.0.AND.IGDS(2).NE.
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& 255) THEN
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LENGDS = IGDS(5) * 2 + 32
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ENDIF
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ELSE IF (IGDS(3) .EQ. 1 .OR. IGDS(3) .EQ. 3 .OR.
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& IGDS(3) .EQ. 13) THEN
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LENGDS = 42
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ELSE
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C PRINT *,' W3FI74 ERROR, GRID REPRESENTATION TYPE NOT VALID'
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IGERR = 1
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RETURN
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ENDIF
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C
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C PUT LENGTH OF GDS SECTION IN BYTES 1,2,3
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C
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GDS(1) = CHAR(MOD(LENGDS/65536,256))
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GDS(2) = CHAR(MOD(LENGDS/ 256,256))
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GDS(3) = CHAR(MOD(LENGDS ,256))
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C
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C OCTET 4 = NV, NUMBER OF VERTICAL COORDINATE PARAMETERS
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C OCTET 5 = PV, PL OR 255
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C OCTET 6 = DATA REPRESENTATION TYPE (TABLE 6)
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C
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GDS(4) = CHAR(IGDS(1))
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GDS(5) = CHAR(IGDS(2))
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GDS(6) = CHAR(IGDS(3))
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C
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C FILL OCTET THE REST OF THE GDS BASED ON DATA REPRESENTATION
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C TYPE (TABLE 6)
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C
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C$$
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C PROCESS LAT/LON GRID TYPES OR GAUSSIAN GRID OR ARAKAWA
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C STAGGERED, SEMI-STAGGERED, OR FILLED E-GRIDS
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C
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IF (IGDS(3).EQ.0.OR.IGDS(3).EQ.4.OR.
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& IGDS(3).EQ.201.OR.IGDS(3).EQ.202.OR.
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& IGDS(3).EQ.203) THEN
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GDS( 7) = CHAR(MOD(IGDS(4)/256,256))
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GDS( 8) = CHAR(MOD(IGDS(4) ,256))
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GDS( 9) = CHAR(MOD(IGDS(5)/256,256))
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GDS(10) = CHAR(MOD(IGDS(5) ,256))
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LATO = IGDS(6)
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IF (LATO .LT. 0) THEN
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LATO = -LATO
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LATO = IOR(LATO,8388608)
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ENDIF
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GDS(11) = CHAR(MOD(LATO/65536,256))
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GDS(12) = CHAR(MOD(LATO/ 256,256))
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GDS(13) = CHAR(MOD(LATO ,256))
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LONO = IGDS(7)
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IF (LONO .LT. 0) THEN
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LONO = -LONO
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LONO = IOR(LONO,8388608)
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ENDIF
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GDS(14) = CHAR(MOD(LONO/65536,256))
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GDS(15) = CHAR(MOD(LONO/ 256,256))
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GDS(16) = CHAR(MOD(LONO ,256))
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LATEXT = IGDS(9)
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IF (LATEXT .LT. 0) THEN
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LATEXT = -LATEXT
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LATEXT = IOR(LATEXT,8388608)
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ENDIF
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GDS(18) = CHAR(MOD(LATEXT/65536,256))
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GDS(19) = CHAR(MOD(LATEXT/ 256,256))
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GDS(20) = CHAR(MOD(LATEXT ,256))
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LONEXT = IGDS(10)
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IF (LONEXT .LT. 0) THEN
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LONEXT = -LONEXT
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LONEXT = IOR(LONEXT,8388608)
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ENDIF
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GDS(21) = CHAR(MOD(LONEXT/65536,256))
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GDS(22) = CHAR(MOD(LONEXT/ 256,256))
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GDS(23) = CHAR(MOD(LONEXT ,256))
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IRES = IAND(IGDS(8),128)
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IF (IGDS(3).EQ.201.OR.IGDS(3).EQ.202.OR.IGDS(3).EQ.203) THEN
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GDS(24) = CHAR(MOD(IGDS(11)/256,256))
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GDS(25) = CHAR(MOD(IGDS(11) ,256))
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ELSE IF (IRES.EQ.0) THEN
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GDS(24) = CHAR(255)
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GDS(25) = CHAR(255)
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ELSE
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GDS(24) = CHAR(MOD(IGDS(12)/256,256))
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GDS(25) = CHAR(MOD(IGDS(12) ,256))
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END IF
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IF (IGDS(3).EQ.4) THEN
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GDS(26) = CHAR(MOD(IGDS(11)/256,256))
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GDS(27) = CHAR(MOD(IGDS(11) ,256))
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ELSE IF (IGDS(3).EQ.201.OR.IGDS(3).EQ.202.OR.
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& IGDS(3).EQ.203) THEN
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GDS(26) = CHAR(MOD(IGDS(12)/256,256))
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GDS(27) = CHAR(MOD(IGDS(12) ,256))
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ELSE IF (IRES.EQ.0) THEN
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GDS(26) = CHAR(255)
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GDS(27) = CHAR(255)
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ELSE
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GDS(26) = CHAR(MOD(IGDS(11)/256,256))
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GDS(27) = CHAR(MOD(IGDS(11) ,256))
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END IF
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GDS(28) = CHAR(IGDS(13))
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GDS(29) = CHAR(0)
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GDS(30) = CHAR(0)
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GDS(31) = CHAR(0)
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GDS(32) = CHAR(0)
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IF (LENGDS.GT.32) THEN
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ISUM = 0
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I = 19
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DO 10 J = 33,LENGDS,2
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ISUM = ISUM + IGDS(I)
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GDS(J) = CHAR(MOD(IGDS(I)/256,256))
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GDS(J+1) = CHAR(MOD(IGDS(I) ,256))
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I = I + 1
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10 CONTINUE
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END IF
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C
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C$$ PROCESS MERCATOR GRID TYPES
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C
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ELSE IF (IGDS(3) .EQ. 1) THEN
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GDS( 7) = CHAR(MOD(IGDS(4)/256,256))
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GDS( 8) = CHAR(MOD(IGDS(4) ,256))
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GDS( 9) = CHAR(MOD(IGDS(5)/256,256))
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GDS(10) = CHAR(MOD(IGDS(5) ,256))
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LATO = IGDS(6)
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IF (LATO .LT. 0) THEN
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LATO = -LATO
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LATO = IOR(LATO,8388608)
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ENDIF
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GDS(11) = CHAR(MOD(LATO/65536,256))
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GDS(12) = CHAR(MOD(LATO/ 256,256))
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GDS(13) = CHAR(MOD(LATO ,256))
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LONO = IGDS(7)
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IF (LONO .LT. 0) THEN
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LONO = -LONO
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LONO = IOR(LONO,8388608)
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ENDIF
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GDS(14) = CHAR(MOD(LONO/65536,256))
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GDS(15) = CHAR(MOD(LONO/ 256,256))
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GDS(16) = CHAR(MOD(LONO ,256))
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LATEXT = IGDS(9)
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IF (LATEXT .LT. 0) THEN
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LATEXT = -LATEXT
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LATEXT = IOR(LATEXT,8388608)
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ENDIF
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GDS(18) = CHAR(MOD(LATEXT/65536,256))
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GDS(19) = CHAR(MOD(LATEXT/ 256,256))
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GDS(20) = CHAR(MOD(LATEXT ,256))
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LONEXT = IGDS(10)
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IF (LONEXT .LT. 0) THEN
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LONEXT = -LONEXT
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LONEXT = IOR(LONEXT,8388608)
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ENDIF
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GDS(21) = CHAR(MOD(LONEXT/65536,256))
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GDS(22) = CHAR(MOD(LONEXT/ 256,256))
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GDS(23) = CHAR(MOD(LONEXT ,256))
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GDS(24) = CHAR(MOD(IGDS(13)/65536,256))
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GDS(25) = CHAR(MOD(IGDS(13)/ 256,256))
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GDS(26) = CHAR(MOD(IGDS(13) ,256))
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GDS(27) = CHAR(0)
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GDS(28) = CHAR(IGDS(14))
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GDS(29) = CHAR(MOD(IGDS(12)/65536,256))
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GDS(30) = CHAR(MOD(IGDS(12)/ 256,256))
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GDS(31) = CHAR(MOD(IGDS(12) ,256))
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GDS(32) = CHAR(MOD(IGDS(11)/65536,256))
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GDS(33) = CHAR(MOD(IGDS(11)/ 256,256))
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GDS(34) = CHAR(MOD(IGDS(11) ,256))
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GDS(35) = CHAR(0)
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GDS(36) = CHAR(0)
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GDS(37) = CHAR(0)
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GDS(38) = CHAR(0)
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GDS(39) = CHAR(0)
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GDS(40) = CHAR(0)
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GDS(41) = CHAR(0)
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GDS(42) = CHAR(0)
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C$$ PROCESS LAMBERT CONFORMAL GRID TYPES
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ELSE IF (IGDS(3) .EQ. 3) THEN
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GDS( 7) = CHAR(MOD(IGDS(4)/256,256))
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GDS( 8) = CHAR(MOD(IGDS(4) ,256))
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GDS( 9) = CHAR(MOD(IGDS(5)/256,256))
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GDS(10) = CHAR(MOD(IGDS(5) ,256))
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LATO = IGDS(6)
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IF (LATO .LT. 0) THEN
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LATO = -LATO
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LATO = IOR(LATO,8388608)
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ENDIF
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GDS(11) = CHAR(MOD(LATO/65536,256))
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GDS(12) = CHAR(MOD(LATO/ 256,256))
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GDS(13) = CHAR(MOD(LATO ,256))
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LONO = IGDS(7)
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IF (LONO .LT. 0) THEN
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LONO = -LONO
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LONO = IOR(LONO,8388608)
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ENDIF
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GDS(14) = CHAR(MOD(LONO/65536,256))
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GDS(15) = CHAR(MOD(LONO/ 256,256))
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GDS(16) = CHAR(MOD(LONO ,256))
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LONM = IGDS(9)
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IF (LONM .LT. 0) THEN
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LONM = -LONM
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LONM = IOR(LONM,8388608)
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ENDIF
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GDS(18) = CHAR(MOD(LONM/65536,256))
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GDS(19) = CHAR(MOD(LONM/ 256,256))
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GDS(20) = CHAR(MOD(LONM ,256))
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GDS(21) = CHAR(MOD(IGDS(10)/65536,256))
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GDS(22) = CHAR(MOD(IGDS(10)/ 256,256))
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GDS(23) = CHAR(MOD(IGDS(10) ,256))
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GDS(24) = CHAR(MOD(IGDS(11)/65536,256))
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GDS(25) = CHAR(MOD(IGDS(11)/ 256,256))
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GDS(26) = CHAR(MOD(IGDS(11) ,256))
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GDS(27) = CHAR(IGDS(12))
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GDS(28) = CHAR(IGDS(13))
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GDS(29) = CHAR(MOD(IGDS(15)/65536,256))
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GDS(30) = CHAR(MOD(IGDS(15)/ 256,256))
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GDS(31) = CHAR(MOD(IGDS(15) ,256))
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GDS(32) = CHAR(MOD(IGDS(16)/65536,256))
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GDS(33) = CHAR(MOD(IGDS(16)/ 256,256))
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GDS(34) = CHAR(MOD(IGDS(16) ,256))
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GDS(35) = CHAR(MOD(IGDS(17)/65536,256))
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GDS(36) = CHAR(MOD(IGDS(17)/ 256,256))
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GDS(37) = CHAR(MOD(IGDS(17) ,256))
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GDS(38) = CHAR(MOD(IGDS(18)/65536,256))
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GDS(39) = CHAR(MOD(IGDS(18)/ 256,256))
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GDS(40) = CHAR(MOD(IGDS(18) ,256))
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GDS(41) = CHAR(0)
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GDS(42) = CHAR(0)
|
||
|
|
C$$ PROCESS POLAR STEREOGRAPHIC GRID TYPES
|
||
|
|
ELSE IF (IGDS(3) .EQ. 5) THEN
|
||
|
|
GDS( 7) = CHAR(MOD(IGDS(4)/256,256))
|
||
|
|
GDS( 8) = CHAR(MOD(IGDS(4) ,256))
|
||
|
|
GDS( 9) = CHAR(MOD(IGDS(5)/256,256))
|
||
|
|
GDS(10) = CHAR(MOD(IGDS(5) ,256))
|
||
|
|
LATO = IGDS(6)
|
||
|
|
IF (LATO .LT. 0) THEN
|
||
|
|
LATO = -LATO
|
||
|
|
LATO = IOR(LATO,8388608)
|
||
|
|
ENDIF
|
||
|
|
GDS(11) = CHAR(MOD(LATO/65536,256))
|
||
|
|
GDS(12) = CHAR(MOD(LATO/ 256,256))
|
||
|
|
GDS(13) = CHAR(MOD(LATO ,256))
|
||
|
|
LONO = IGDS(7)
|
||
|
|
IF (LONO .LT. 0) THEN
|
||
|
|
LONO = -LONO
|
||
|
|
LONO = IOR(LONO,8388608)
|
||
|
|
ENDIF
|
||
|
|
GDS(14) = CHAR(MOD(LONO/65536,256))
|
||
|
|
GDS(15) = CHAR(MOD(LONO/ 256,256))
|
||
|
|
GDS(16) = CHAR(MOD(LONO ,256))
|
||
|
|
LONM = IGDS(9)
|
||
|
|
IF (LONM .LT. 0) THEN
|
||
|
|
LONM = -LONM
|
||
|
|
LONM = IOR(LONM,8388608)
|
||
|
|
ENDIF
|
||
|
|
GDS(18) = CHAR(MOD(LONM/65536,256))
|
||
|
|
GDS(19) = CHAR(MOD(LONM/ 256,256))
|
||
|
|
GDS(20) = CHAR(MOD(LONM ,256))
|
||
|
|
GDS(21) = CHAR(MOD(IGDS(10)/65536,256))
|
||
|
|
GDS(22) = CHAR(MOD(IGDS(10)/ 256,256))
|
||
|
|
GDS(23) = CHAR(MOD(IGDS(10) ,256))
|
||
|
|
GDS(24) = CHAR(MOD(IGDS(11)/65536,256))
|
||
|
|
GDS(25) = CHAR(MOD(IGDS(11)/ 256,256))
|
||
|
|
GDS(26) = CHAR(MOD(IGDS(11) ,256))
|
||
|
|
GDS(27) = CHAR(IGDS(12))
|
||
|
|
GDS(28) = CHAR(IGDS(13))
|
||
|
|
GDS(29) = CHAR(0)
|
||
|
|
GDS(30) = CHAR(0)
|
||
|
|
GDS(31) = CHAR(0)
|
||
|
|
GDS(32) = CHAR(0)
|
||
|
|
ENDIF
|
||
|
|
C PRINT 10,(GDS(IG),IG=1,32)
|
||
|
|
C10 FORMAT (' GDS= ',32(1X,Z2.2))
|
||
|
|
C
|
||
|
|
C COMPUTE NUMBER OF POINTS IN GRID BY MULTIPLYING
|
||
|
|
C IGDS(4) AND IGDS(5) ... NEEDED FOR PACKER
|
||
|
|
C
|
||
|
|
IF (IGDS(3).EQ.0.AND.IGDS(1).EQ.0.AND.IGDS(2).NE.
|
||
|
|
& 255) THEN
|
||
|
|
NPTS = ISUM
|
||
|
|
ELSE
|
||
|
|
NPTS = IGDS(4) * IGDS(5)
|
||
|
|
ENDIF
|
||
|
|
C
|
||
|
|
C 'IOR' ICOMP-BIT 5 RESOLUTION & COMPONENT FLAG FOR WINDS
|
||
|
|
C WITH IGDS(8) INFO (REST OF RESOLUTION & COMPONENT FLAG DATA)
|
||
|
|
C
|
||
|
|
ICOMP = ISHFT(ICOMP,3)
|
||
|
|
GDS(17) = CHAR(IOR(IGDS(8),ICOMP))
|
||
|
|
C
|
||
|
|
RETURN
|
||
|
|
END
|