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Re: Change default value of system variable? [message #23837 is a reply to message #23835]

Fri, 23 February 2001 11:14

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

"K. Bowman" <k-bowman@null.tamu.edu> writes:
> I prefer to plot with black lines on a white background, so in my
> idl_startup file I include
>
> !P.BACKGROUND = COLOR_24('white') ;Set background color to white
> !P.COLOR = COLOR_24('black') ;Set default draw color to black
>
> (COLOR_24 is my own routine.)
>
> This works fine until I change plot devices and then change back, viz.
... deleted ...
>
> This means that I have to include code to set !P.BACKGROUND and
> !P.COLOR in every time I switch graphics devices. Is there any way to
> change the default value of a built-in system variable?

You could simply save and restore the entire !P variable, right?

old_p = !p
set_plot, 'ps'
...
set_plot, 'x'
!p = old_p

This probably wouldn't be much better to type on the command line, but
it would be pretty nice for programming, and you have the satisfaction
that you didn't miss any stray graphics keywords by accident.

Craig

--
------------------------------------------------------------ --------------
Craig B. Markwardt, Ph.D. EMAIL: craigmnet@cow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
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[Message index]

		Re: Change default value of system variable? By: Kenneth P. Bowman on Fri, 23 February 2001 16:43
		Re: Change default value of system variable? By: Paul van Delst on Fri, 23 February 2001 11:56
		Re: Change default value of system variable? By: Craig Markwardt on Fri, 23 February 2001 11:14
		Re: Change default value of system variable? By: Martin Schultz on Fri, 23 February 2001 10:00
		Re: Change default value of system variable? By: davidf on Fri, 23 February 2001 09:21
		Re: Change default value of system variable? By: davidf on Fri, 23 February 2001 09:11
		Re: Change default value of system variable? By: Liam E. Gumley on Mon, 26 February 2001 07:45
		Re: Change default value of system variable? By: davidf on Fri, 23 February 2001 18:43

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