| Re: How can I limit maximum value plotted with cgPlotS? [message #79525] |
Wed, 07 March 2012 05:30 |
David Fanning
Messages: 11724
Registered: August 2001
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Fabien writes:
> I am a big fan of cg routines, but here I must add a word. One of the
> small problem of these routines is that they wrap the original IDL
> routines, and I've seen that for many students learning IDL this is a
> bit confusing: "should I read cgPlot documentation or IDL's plot
> documentation"?
> For this specific post, for example, this is a plotS question, not a
> cgPlotS.
>
> But, I agree, this is a *very* small drawback ;)
Yes, I agree. And if I was getting paid to do this,
I would probably document and define every damn keyword.
(Have I mentioned that I've grown very, very tired,
indeed, of keyword inheritance?) But, spending weeks and weeks
documenting keywords that get used once every 10 years
seems *exactly* like the kind of thing my wife is always
warning me against. :-(
I could probably duplicate a help page of "graphics
keywords", but this would be a re-hash of a page
that already exists. And, Lord knows we don't want to
encourage yet more documentation to go missing from
the "official" documentation. Although maybe I should
at least copy it. Taking it away from us may be the
only thing that will get us to use the "new" graphics!
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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| Re: How can I limit maximum value plotted with cgPlotS? [message #79528 is a reply to message #79525] |
Wed, 07 March 2012 01:04  |
Fabzi
Messages: 305
Registered: July 2010
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Senior Member |
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On 03/07/2012 12:18 AM, David Fanning wrote:
> Probably because the Coyote Graphics System seems miraculous,
> given some of the other graphics systems. Hard to believe you
> have to think about anything. ;-)
I am a big fan of cg routines, but here I must add a word. One of the
small problem of these routines is that they wrap the original IDL
routines, and I've seen that for many students learning IDL this is a
bit confusing: "should I read cgPlot documentation or IDL's plot
documentation"?
For this specific post, for example, this is a plotS question, not a
cgPlotS.
But, I agree, this is a *very* small drawback ;)
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| Re: How can I limit maximum value plotted with cgPlotS? [message #79531 is a reply to message #79528] |
Tue, 06 March 2012 15:18 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Barry Lesht writes:
> Thanks, David. Why didn't I think of that???
Probably because the Coyote Graphics System seems miraculous,
given some of the other graphics systems. Hard to believe you
have to think about anything. ;-)
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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| Re: How can I limit maximum value plotted with cgPlotS? [message #79542 is a reply to message #79532] |
Mon, 05 March 2012 22:04 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Barry Lesht writes:
> I'm having a lot of fun with cgPlotS from David's Coyote graphics
> library. Its very helpful to be able to assign colors to symbols
> using data values, etc. However, I have had cases when, after setting
> up a plot framework using the "cgPlot, XRANGE=[minx, maxx],
> YRANGE=[miny, maxy], /NODATA" construct, some of the data values that
> are plotted by subsequent calls to cgPlotS are larger than maxy and
> still show up on the graph but above the axis limit. This is the kind
> of thing that the traditional MAX_VALUE parameter is supposed to
> address, but MAX_VALUE can't be passed to cgPlotS because its built
> around PLOTS. I suppose I could test the data array before plotting
> it and just not pass the offending values, but I was wondering if
> there is some better way to address this problem. Thanks.
I would set NOCLIP=0 on the cgPlotS command. :-)
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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