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Re: All I get is gray scale [message #29089 is a reply to message #29088]

Thu, 31 January 2002 13:54

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Gary Hodges(gary.hodgesREMOVE@cires.colorado.edu) writes:

> I've read through several historical "color" threads and even bought the book
> (IDL Programming Techniques), but I'm still only able to plot gray scale.
> I've just followed the "Drawing Line Plots in Color" on page 25 of the
> Fanning book without success. The exact commands are (time and curve
> are already defined):
>
> IDL> TVLCT, [70,255,0], [70,255,255], [70,0,0], 1
> IDL> Plot, time, curve, Color=2, Background=1
>
> This produces a black plot window. To see anything I have to increase the
> color value to ~50, with higher values producing progressively less gray
> plots. I gather this goes against what I'm trying to do with the above TVLCT
> command, which is I understand things, to assign three RGB colors to indexes
> 1, 2 and 3.
>
> I have also tried "IDL> Device, Decomposed=0" trick without success.

Humm. I find this hard to believe. :-)

Did you try this *before* the two commands above?
I presume you did.

Try this. Start IDL, open a window (use the Window command),
the send us the contents of a Help, /Device command.
Something is not right in Denmark.

Cheers,

David

> Curiously, if I move the plot window on the desktop I get a horizontal pink
> and pink bar stretching across the screen.

Yes, quite curious. I have no idea what it might
mean.

Cheers,

David

--
David W. Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155

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[Message index]

		Re: All I get is gray scale By: Craig Markwardt on Fri, 01 February 2002 02:13
		Re: All I get is gray scale By: David Fanning on Thu, 31 January 2002 16:35
		Re: All I get is gray scale By: gary.hodgesREMOVE on Thu, 31 January 2002 15:56
		Re: All I get is gray scale By: David Fanning on Thu, 31 January 2002 15:29
		Re: All I get is gray scale By: gary.hodgesREMOVE on Thu, 31 January 2002 14:57
		Re: All I get is gray scale By: Ralf Flicker on Thu, 31 January 2002 13:55
		Re: All I get is gray scale By: David Fanning on Thu, 31 January 2002 13:54

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