Transcription of A short tutorial on GrADS Grid Analysis and Display System
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A short tutorial on GrADS Grid Analysis and Display System
1 A short tutorial on GrADS Grid Analysis and Display System 2 Table of Contents 1. THE SOFTWARE .. 4 What is GrADS ? .. 4 Downloading GrADS .. 4 Support and Discussion List .. 4 BACKGROUND AND BASIC COMMANDS .. 4 Installing GrADS .. 4 The data and descriptor (.ctl) files .. 5 Running GrADS (initiation session) .. 6 The set command .. 10 Manipulating Dimensions .. 10 Other Basic Command .. 11 Examples and Basic Exercises .. 12 PLOTING GRAPHICS .. 14 Graphics types .. 14 Projections maps .. 16 Inserting Titles, Texts, Forms and 17 Controlling Graphical Options .. 18 Page Control .. 23 Application examples and exercises .. 24 GENERATING GRAPHICS OUTPUT FILES .. 26 GrADS metafile (.gmf) archives .. 26 GrADS Metafile Viewer for Windows .. 26 gxtran application.
The data file must be in the BINARY, GRIB, NetCDF, or HDF-SDS formats. The descriptor.ctl is a text-type file, in which all specifications of the dimension of data file are described. A simple example descriptor file is below: Significations of the lines of the descriptor file (model.ctl): DSET ^model.dat Specifies the name of the data file (^means
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