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<title>GrADS User's Guide</title>
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<font size=+2><a href="users.html">GrADS User's Guide<br>Table of Contents</a></font>
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<font size=+1>General Topics</font><br>
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<li><a href="start.html">Starting and Quiting GrADS</a>
<li><a href="basic.html">Basic Concept of Operation</a>
<li><a href="aboutgriddeddata.html">Gridded Data Sets</a>
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<li><a href="aboutgriddeddata.html#descriptor">Gridded Data Descriptor File</a>
<li><a href="aboutgriddeddata.html#structure">Structure of a Gridded Binary Data File</a>
<li><a href="aboutgriddeddata.html#formats">Binary Data Formats</a>
<li><a href="aboutgriddeddata.html#create">Creating Data Files</a>
<li><a href="ensembles.html">The Ensemble Dimension in GrADS version 2.0</a>
<li><a href="descriptorfile.html">Elements of a GrADS Data Descriptor File</a>
<li><a href="grib.html">Creating a Data Descriptor File for GRIB Data</a>
<li><a href="SDFdescriptorfile.html">Reading NetCDF and HDF-SDS Files with GrADS</a>
<li><a href="compression.html">Reading and Writing Compressed Data Sets</a>
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<li><a href="reinitialization.html">Reinitialization of GrADS</a>
<li><a href="commandline.html">Command Line Editing and History</a>
<li><a href="utilities.html">External Utilities</a>
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<font size=+1>Analysis Topics</font><br>
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<li><a href="dimenv.html">Dimension Environment</a>
<li><a href="variable.html">GrADS Variables</a>
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<li><a href="variable.html#names">Variable Names</a>
<li><a href="variable.html#new">Defining New Variables</a>
<li><a href="variable.html#undefine">Undefining Variables</a>
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<li><a href="expressions.html">GrADS Expressions</a>
<li><a href="templates.html">Using Templates to Aggregate Data Files</a>
<li><a href="aboutstationdata.html">About GrADS Station Data</a>
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<li><a href="aboutstationdata.html#station">Structure of a GrADS Station
Data File</a>
<li><a href="aboutstationdata.html#create">Creating a GrADS Station Data
File</a>
<li><a href="aboutstationdata.html#descriptor">GrADS Station Data Descriptor
File</a>
<li><a href="aboutstationdata.html#stnmap">The STNMAP Utility</a>
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<li><a href="bufrformat.html">The BUFR Format for Station Data</a></li>
<li><a href="usingstationdata.html">Using Station Data</a>
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<li><a href="usingstationdata.html#operating">Operating on Station Data</a>
<li><a href="usingstationdata.html#model">Plotting Station Models</a>
<li><a href="usingstationdata.html#xsection">Drawing Arbitrary Cross Sections</a>
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<li><a href="udf.html">User Defined Functions</a>
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<li><a href="udf.html#overview">Overview of User Defined Functions</a>
<li><a href="udf.html#table">The user defined function table</a>
<li><a href="udf.html#dtf">Format of the function data transfer file</a>
<li><a href="udf.html#frf">Format of the function result file</a>
<li><a href="udf.html#example">Example: Linear Regression Function</a>
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<li><a href="map.html">Using Pre-Projected Data in GrADS</a>
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<li><a href="map.html#polar">Polar Stereo Preprojected Data</a>
<li><a href="map.html#lambert">Lambert Conformal Preprojected Data</a>
<li><a href="map.html#eta">NCEP ETA Model</a>
<li><a href="map.html#nmc">NCEP polar stereographic grid for SSMI data</a>
<li><a href="map.html#csu">CSU RAMS oblique polar stereographic grid</a>
<li><a href="map.html#pit">Pitfalls when using preprojected data</a>
<li><a href="map.html#proj">GrADS Display Projections</a>
<li><a href="map.html#summary">Summary and Plans</a>
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<li><a href="variableformats.html">Non-Standard Variable Formats and Data File Structures</a>
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<font size=+1>Display Topics</font><br>
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<li><a href="display.html">Displaying Data</a>
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<li><a href="display.html#DDP">Drawing Plots</a>
<li><a href="display.html#CTD">Clearing the Display</a>
<li><a href="display.html#GOT">Graphics Output Types</a>
<li><a href="advdisplay.html">Graphics Options</a>
<li><a href="graphelem.html">Drawing Basic Graphics Elements</a>
<li><a href="shapefiles.html">Drawing the Contents of a Shapefile</a>
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<li><a href="animation.html">Animation</a>
<li><a href="pagecontrol.html">Page Control</a>
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<li><a href="pagecontrol.html#real">Real and Virtual Pages</a>
<li><a href="pagecontrol.html#plotarea">Controlling the Plot Area</a>
<li><a href="pagecontrol.html#multipanel">Drawing Multi-Panel Plots</a>
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<li><a href="colorcontrol.html">Color Control</a>
<li><a href="fontcontrol.html">Font Control</a><br>
<li><a href="imageoutput.html">Producing Hardcopy and Image Output from GrADS</a>
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<font size=+1>GrADS Scripting Language</font><br>
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<li><a href="script.html#intro">Introduction to GrADS scripts</a>
<li><a href="script.html#elements">Elements of the Language:</a>
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<li><a href="script.html#comment">comment</a>
<li><a href="script.html#statement">statement</a>
<li><a href="script.html#assignment">assignment</a>
<li><a href="script.html#standardio">say / prompt / pull</a>
<li><a href="script.html#ifendif">if / else / endif</a>
<li><a href="script.html#while">while / endwhile</a>
<li><a href="script.html#variables">variables</a>
<li><a href="script.html#operators">operators</a>
<li><a href="script.html#expressions">expressions</a>
<li><a href="script.html#functions">Functions</a>
<li><a href="script.html#intrinsic">Intrinsic Functions</a>
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<li><a href="script.html#commands">Commands that complement the scripting language</a>
<li><a href="script.html#widgets">Widgets</a>
<li><a href="gsf.html">Dynamic Loading of Script Functions</a>
<li><a href="library.html">Script Library</a>
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