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Change default value of system variable? [message #23844]

Fri, 23 February 2001 08:54

K. Bowman
Messages: 330
Registered: May 2000

Senior Member

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.

flow>idl
IDL Version 5.3 (IRIX mipseb). (c) 1999, Research Systems, Inc.
IDL> PRINT, !P.BACKGROUND, !P.COLOR
16777215 0
IDL> SET_PLOT, 'PS'
IDL> SET_PLOT, 'X'
IDL> PRINT, !P.BACKGROUND, !P.COLOR
0 255

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?

Thanks, Ken

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[Message index]

		Change default value of system variable? By: K. Bowman on Fri, 23 February 2001 08:54
		Re: Change default value of system variable? By: R.G.S. on Mon, 26 February 2001 10:47
		Re: Change default value of system variable? By: Liam E. Gumley on Mon, 26 February 2001 08:38
		Re: Change default value of system variable? By: davidf on Mon, 26 February 2001 08:31
		Re: Change default value of system variable? By: Martin Schultz on Tue, 27 February 2001 04:05
		Re: Change default value of system variable? By: davidf on Tue, 27 February 2001 15:36
		Re: Change default value of system variable? By: Kenneth P. Bowman on Tue, 27 February 2001 15:20

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