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Re: Problem with cgcmdwindow__define [message #87640 is a reply to message #87631]

Thu, 20 February 2014 10:57

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Sean Elvidge writes:

> I seem to be having a problem when saving a cgWindow to a Raster image file. I think the problem may be in cgcmdwindow__define. I am trying to save a cgWindow, to a PNG file (although this happens for any file type) however the outputted image is only a single pixel wide.
>
> I believe this is because a WIDTH of 0 is being passed to cgPS_Close (line 2662 in cgcmdwindow__define) which comes from self.im_width. With the width set thus when an N_ELEMENTS check is done during cgPS_Close the program thinks I want to resize the image to something of width 0.
>
> This fault seems to have only arisen recently.

I ended up solving this in a different way from what I recommended this
morning. As I did so, I fixed a bug I had introduced into cgPS2Raster
when I moved some code in the ImageMagick command. I didn't realize
order of the keywords on the command mattered as much as they did. The
result was that the HEIGHT value was being applied to WIDTH in some
cases. While I was fixing *that* program, I just added the HEIGHT
keyword to cgPSClose because, well, why not.

All this to say that several files changed today and you are probably
due for an updated Library anyway:

http://www.idlcoyote.com/programs/zip_files/coyoteprograms.z ip

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")

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[Message index]

		Problem with cgcmdwindow__define By: seanelvidge on Thu, 20 February 2014 05:52
		Re: Problem with cgcmdwindow__define By: David Fanning on Thu, 20 February 2014 06:08
		Re: Problem with cgcmdwindow__define By: David Fanning on Thu, 20 February 2014 06:10
		Re: Problem with cgcmdwindow__define By: David Fanning on Thu, 20 February 2014 06:21
		Re: Problem with cgcmdwindow__define By: David Fanning on Thu, 20 February 2014 10:57
		Re: Problem with cgcmdwindow__define By: seanelvidge on Fri, 21 February 2014 00:13

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