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This IDL Programming Tips and Tricks database is a. ANSWER: The Coyote Graphics System (CGS) is a collection of Coyote Library. QUESTION: How do I download and install the Coyote Library.

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If a color index is not specified and color decomposition is turned off, then the specified color is loaded into the! In no case is the character size changed by the program if the! Further information is contained in this article on my web page. This program set the current color decomposition state of a graphics device in a device-independent and version-independent manner.

Coyote’s Guide to IDL Programming

Kdl completely eliminates any concern for poor quality fonts in raster file output. If the keyword is 1, the program always returns a bit color value.

Let me be absolutely clear about this. This resizes a raster file in known format e. If you are looking for retired or obsolete Coyote Library routines e. For example, here is how I create isl plot that is 2 units tall and 3 icl wide: This command allows you draw a filled or unfilled polygon on the display. Note also that directories are separated by colons in a UNIX environment.

Coyote Graphics plotting routines can take advantage of this capability automatically. This returns a Greek letter in a device-independent way for use in plot titles and other graphics annotation.

IDL Programming Tips

Labels are centered either horizontally or vertically for each color, and the labels can be rotated, if needed, to keep an uncluttered display. It is not my intention to reinvent the wheel, but I did need a way to create PDF files automatically from within a cgWindow program, and this program does the job.


Clicking inside the plot boundaries with the LEFT mouse button will allow a rubberband-box zoom in both the X and Y directions.

This is a subclassed cgContainer object that maintains a rectangular data coordinate system for other Coyote Graphics objects and programs. A feature extends a KML object. This makes it easy to produce PostScript output in the correct dimensions for measuring. Later, we figured out how to right them. For the most part the function graphics code available on this page was made available to me by Matthew Argall.

For example, if you are running into a problem with a program like PSCONFIG, it is likely that you may have another program with this name on your path, and you are compiling this first, rather than the one you want in the coyote directory. This program calculates user-specified percentiles of a data set. For the most part, Catalyst Library applications use direct graphics methods, even though everything in the library is an object.

If this keyword is 0, the program always returns a color index number. These two programs in the same file are wrappers that allow easy configuration of PostScript output.

Coyote Graphics Programs

A new program, named cgFindCoyoteFiles has been added to the Library to help you find and eliminate old and out-dated versions of Coyote Library files. Use cgSetcgShow and cgDelete to manipulate cgWindow applications. You can have a command like this for as many third-party libraries as you want to install on your machine. This tells IDL to search all of the sub-directories of these directories and add them to the path, too.

See the KML Documentation for additional details. I have added the ability to smooth the data with the Smooth coytoe and to return the relative frequency of the histogram, rather than the histogram counts with the Frequency keyword.


Works well with the map coordinate object, cgMap, for georegistered images Allows semi-transparent images to be overlaid on existing images Allows output directly to PostScript and raster files e. Please cohote a look at what people are saying about the book and the Coyote Graphics System. All updates to Coyote programs occur on the most recent incarnation of the program.

This program is similar to the ActiveContour program in that it implements the Gradient Vector Flow active contouring method of Xu and Prince.

Ldl you are running IDL 5. Local or UTM time can be specified. Note that if you are installing both the Coyote and Catalyst Libraries, the Coyote Coyite should be positioned before the Catalyst Library in your path list, as programs in the Coyote Library must be found before they are used by programs in the Catalyst Library.

The indices are selected without replacement, which means you get a list of unique indices.

This program has been completely re-written in Nov to be a fully-capable surface command along coytoe lines of the traditional surface command, cgSurf. Set the Window keyword to add this command to an cgWindow application. To see a list of all the colors available by name, type this: