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Re: Using Postscript & Colours in IDL [message #58328 is a reply to message #58324]

Mon, 28 January 2008 06:45

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

chloesharrocks@gmail.com writes:

> PS. What do you mean by a "postscript device" (as I said - COMPLETE
> NOVICE HERE!)? Is that referring to the software I use to open the ps
> files or something else entirely?

IDL draws graphics commands to a "graphics device". There
are several kinds of "graphics devices". One is your display,
which is probably named "X", another is PostScript, named
"PS", another is the Z-graphics buffer, named "Z", etc.
IDL can only draw graphics to one graphics device at a
time. The one that is being used currently is stored
in !D.NAME. So, to find out which one you are using (that
is to say, where your graphics are going to go), type
this:

IDL> Print, !D.Name

You select other graphics devices with the SET_PLOT
command:

IDL> Set_Plot, 'PS'
IDL> Set_Plot, 'X'
IDL> Set_Plot, 'Z'

You use the DEVICE command to "control" the graphics device.
That is, to set it's properties and the way it works. But,
the keywords you can use with DEVICE depend entirely on which
graphics device is the current one when you issue your DEVICE
command. (This is why your DEVICE, DECOMPOSED=0 command sometimes
works and sometimes doesn't. Sometimes you are using a device that
supports it and sometimes you aren't. You have to know when you
are and when you aren't!)

Cheers,

David

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

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[Message index]

		Re: Using Postscript & Colours in IDL By: David Fanning on Mon, 28 January 2008 07:12
		Re: Using Postscript & Colours in IDL By: chloesharrocks on Mon, 28 January 2008 07:10
		Re: Using Postscript & Colours in IDL By: David Fanning on Mon, 28 January 2008 06:45
		Re: Using Postscript & Colours in IDL By: David Fanning on Mon, 28 January 2008 06:38
		Re: Using Postscript & Colours in IDL By: chloesharrocks on Mon, 28 January 2008 06:23
		Re: Using Postscript & Colours in IDL By: chloesharrocks on Mon, 28 January 2008 06:19
		Re: Using Postscript & Colours in IDL By: David Fanning on Mon, 28 January 2008 05:22
		Re: Using Postscript & Colours in IDL By: chloesharrocks on Mon, 28 January 2008 02:23
		Re: Using Postscript & Colours in IDL By: Norbert Hahn on Mon, 28 January 2008 02:08
		Re: Using Postscript & Colours in IDL By: liamgumley on Mon, 28 January 2008 08:11
		Re: Using Postscript & Colours in IDL By: David Fanning on Mon, 28 January 2008 07:16

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