72 lines
3.8 KiB
HTML
72 lines
3.8 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<html>
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<head>
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<meta http-equiv="CONTENT-TYPE" content="text/html; charset=utf-8">
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<title>CopyFromModel</title>
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<meta name="GENERATOR" content="OpenOffice.org 1.1.3 (Linux)">
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<meta name="CREATED" content="19951121;16410000">
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<meta name="CHANGED" content="20050706;13040400">
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<style>
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<!--
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@page { size: 8.5in 11in; margin-right: 1.25in; margin-top: 1in; margin-bottom: 1in }
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P { margin-bottom: 0.08in; direction: ltr; color: #000000; text-align: left; widows: 0; orphans: 0 }
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P.western { font-family: "Bitstream Vera Serif", "Times New Roman", serif; font-size: 12pt; so-language: en-US }
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P.cjk { font-family: "Bitstream Vera Sans"; font-size: 12pt; so-language: }
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P.ctl { font-family: "Lucidasans"; font-size: 12pt; so-language: }
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-->
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</style>
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</head>
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<body dir="ltr" lang="de-DE" text="#000000">
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<font face="New Century Schoolbook, Times New Roman, serif"><font
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size="5"><b>CopyFromModel</b></font></font>
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<br>
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<br>
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<font face="New Century Schoolbook, Times New Roman, serif"><font
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size="3"><b>Overview</b></font></font>
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<br>
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<br>
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<font face="New Century Schoolbook, Times New Roman, serif">CopyFromModel is a simple
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tool to allow you to copy model data into a particular edit area, possibly while
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time-shifting the model data.
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<br><br>
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If you use the "Populate" method to fill in a Fcst grid, the ENTIRE model grid is
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copied into your Fcst grid. Likewise, if you use the grid manager, button-3 menu
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items of "copy" and "paste", the ENTIRE model grid is copied into your Fcst grid.
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With this tool, if an edit area is active - it will only copy the model grid into
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the specified edit area - NOT the entire grid. If no edit area is active - it
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copies the entire grid. You can specify that a "taper grid" be used to smooth-in
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your changes over a 5-gridbox band if you desire - so that there are not abrupt
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gradient problems near the edge of your edit area. In addition, you can specify
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a model "hour offset" so that you can copy the data from other model hours into
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the hours of your Fcst grid.
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<br><br>
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If the timerange of the grid you are editing contains more than one model grid,
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the model grids are averaged (in a time-weighted sense) before they are copied
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into your Fcst grid. However, for QPF and SnowAmt, the model values are
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accumulated - so that your Fcst grid will contain the total accumulation of
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the model grids during the time period of your Fcst grid. For PoP grids, the
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maximum model value is copied into your Fcst grid - so that it remains consistent
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with the "floating PoP" concept. For Wx grids, it seems to read the "last" model
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Wx grid and copies that into your Fcst grid - but I think you are crazy if you
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use this tool for Wx grids.
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<br><br>
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If you use the "hour offset" feature, a negative offset means to read model data
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from "earlier". For example, if you have a Fcst grid with a timerange of 12-15Z,
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and you say to copy from the GFS Model with an offset of -6, it will read the GFS
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model grids from 6-9Z and copy them into your Fcst grid (and, again, only in the active
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edit area, if you have one defined). A positive offset means to read model data from
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"later". For example, and offset of 6, with a Fcst grid timerange of 12-15Z, will
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copy model data from 18-21Z.
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<br><br>
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This is a SmartTool - and, thus, it only operates on existing Fcst grids - so in
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that sense it differs from the "Populate" or "Copy/Paste" methods which can
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"create" grids for you. You must create a grid (possibly "from scratch") before
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you can run this tool.
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<br><br>
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If you run the tool on multiple grids (i.e., with a selected time range), the
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"hour offset" is applied separately to each grid. For example, with a -3
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"hour offset", a Fcst grid from 12-15Z will read model data from 9-12Z, while a
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Fcst grid from 15-18Z will read model data from 12-15Z.</font>
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</body>
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</html>
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