| Coyote Library Updates [message #80864] |
Thu, 19 July 2012 12:13 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Folks,
The Coyote Library has undergone a number of changes in the
past couple of weeks. This is normal when I am developing
software, so please don't be alarmed. The purpose of the
Library is to make MY programming easier. If you like
the changes, that's just icing on the cake. :-)
There has been one significant development that might
affect you. The SYMCAT function, which returns 46
different symbols, has been retired. It has been
replaced with the cgSymCat program, which does exactly
the same thing, but with some new features.
In particular, it is now possible to use symbol names
rather than just symbol index numbers when specifying
a plotting symbol. The idea is that it is easier to
remember "filled square" than it is to remember, uh, 15.
cgPlot, cgDemoData(1)
cgPlot, cgDemoData(1), PSYM='filled square', /Overplot
Moreover, you can now get all the symbol names from cgSymCat,
by doing this:
names = cgSymCat(/Names)
The list of symbol names is useful if you want to add
them to a ComboBox widget or something like that.
The Coyote Library is slowly evolving into more of an
object library (i.e., the addition of cgZPlot, which
has undergone a great deal of recent development to
support my Lidar work). To this end, two new objects
have been introduced recently: cgOverPlot and cgLegendItem.
I have been using these objects to create overplots
and legends for some of my work. cgPlot has been
modified to work with them, but in a fairly rudimentary
way. (I actually use cgPlot as the drawing routine for
my more sophisticated graphics objects, so that is why
the functionality is there. It makes getting nice looking
raster files, via ImageMagick, a one-line operation
using the OUTPUT keyword.)
Eventually, I think there will be a cgLegend object
that will make use of the cgLegendItem objects, but
that is not being worked on currently.
You can find the latest Coyote Library here:
http://www.idlcoyote.com/programs/zip_files/coyoteprograms.z ip
As always, I'm interested in bug reports and good ideas. :-)
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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