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Re: IDL 5.0 observations [message #9123 is a reply to message #9092]

Tue, 03 June 1997 00:00

davidf
Messages: 2866
Registered: September 1996

Senior Member

P. Smith writes:

> By the way, I've seen info for getting colours tables set up if running in
> 24 bit mode. I haven't been able to do it for the 16 bit mode (65536
> colours) I run my display in Win95. Everthing plots in red, which is ok
> for line plots but I also need to produce colour contour plots.

Plotting in 16-bit mode is similar to plotting in 24-bit
mode, except that instead of using 8-bits of a 24-bit
value for each color, in 16-bit mode fewer bits are
used. (I think it is 6 bits of red and 5 of blue and
green, but I can't remember exactly. 64x32x32 = 65536.)

I have a couple of articles on my web page that talk
about 24-bit color, but the same principles apply to
16-bit color. There are also a number of programs to
help you work in this color environment. For example,
to draw a plot in yellow, you might type this in a
16-bit environment:

PLOT, data, Color=GetColor("yellow", /True)

(I just tried this in IDL 5 running on WindowsNT 4.0
and it didn't work! I got the plot in white, instead.
I tried it in IDL 4.0.1 and it worked exactly as I
expected it to work. I'm finding quite a few bugs in
IDL 5, so I don't know what to make of this. I'll have
to do more experimenting.)

Cheers,

David

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

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[Message index]

		IDL 5.0 observations By: Phil Williams on Tue, 27 May 1997 00:00
		Re: IDL 5.0 observations By: Gilles Ratel on Wed, 04 June 1997 00:00
		Re: IDL 5.0 observations By: Mirko Vukovic on Tue, 03 June 1997 00:00
		Re: IDL 5.0 observations By: davidf on Tue, 03 June 1997 00:00
		Re: IDL 5.0 observations By: Paul R Smith on Tue, 03 June 1997 00:00
		Re: IDL 5.0 observations By: davidf on Tue, 03 June 1997 00:00
		Re: IDL 5.0 observations By: Mirko Vukovic on Mon, 02 June 1997 00:00
		Re: IDL 5.0 observations By: davidf on Fri, 30 May 1997 00:00
		RE: IDL 5.0 Observations By: davidf on Mon, 09 June 1997 00:00
		Re: IDL 5.0 Observations By: Andy Loughe on Mon, 09 June 1997 00:00
		Re: IDL 5.0 observations By: davidf on Sun, 08 June 1997 00:00
		Re: IDL 5.0 observations By: thompson on Fri, 06 June 1997 00:00
		Re: IDL 5.0 observations By: davidf on Thu, 05 June 1997 00:00
		Re: IDL 5.0 observations By: Stein Vidar Hagfors H on Thu, 05 June 1997 00:00

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