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Re: odd behavior of loadct [message #12026 is a reply to message #11996]

Mon, 15 June 1998 00:00

davidf
Messages: 2866
Registered: September 1996

Senior Member

John Boccio (boccio@swarthmore.edu) writes:

> System = Powermacintosh
> IDL V5.1
>
> cd, 'Public Area HD:Codes'
> DEVICE, RETAIN=2, DECOMPOSED=0
>
> z=dist(40)
> shade_surf,z --> draws in gray shades
> loadct,37 --> no change
> shade_surf,z --> changes to colortable 37
>
> Isn't suppose to change the surface colortable when
> I issue the loadct command rather than waiting for a redraw?

This sounds like perfectly normal 16- or 24-bit color
behavior in IDL 5.1 on a Macintosh. See the article
"Yikes. Has 24-bit color handling changed in IDL 5.1?"
on my web page for details. Use your Display control
panel to get your Mac in 256 color mode and you will have
no trouble.

> If I run DEMO first, then loadct works when I issue the command.

Don't know what they are doing here, but I bet they
get you into 256 color mode somehow. My Mac is gone
today, so I can't try it. Check your Display control panel
after the demo runs. How many colors to you have?

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting
E-Mail: davidf@dfanning.com
Phone: 970-221-0438
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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		Re: odd behavior of loadct By: davidf on Fri, 19 June 1998 00:00
		Re: odd behavior of loadct By: gurman on Fri, 19 June 1998 00:00
		Re: odd behavior of loadct By: davidf on Mon, 15 June 1998 00:00

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