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Re: Change default value of system variable? [message #23910 is a reply to message #23844]

Mon, 26 February 2001 08:38

Liam E. Gumley
Messages: 378
Registered: January 2000

Senior Member

David Fanning wrote:
>
> Liam E. Gumley (Liam.Gumley@ssec.wisc.edu) writes:
>
>> How about including this in your startup file:
>>
>> tvlct, 255B, 255B, 255B, 0
>> tvlct, 0B, 0B, 0B, !d.table_size - 1
>> device, decomposed=0
>>
>> You should get black on a white background by default:
>
> Well, certainly until someone loads a color table
> or changes the decomposition state to display a
> 24-bit image. :-)
>

Quite right. You either play with the color indexes, or the color table
itself. At least there are no writable system variables involved in this
method.

As for turning the decomposition state on or off to display 24-bit
images, I let IMDISP take care of it:
http://cimss.ssec.wisc.edu/~gumley/imdisp.html

Cheers,
Liam.
http://cimss.ssec.wisc.edu/~gumley

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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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