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Re: array dimensions [message #24582 is a reply to message #10642]

Sun, 08 April 2001 09:11

davidf
Messages: 2866
Registered: September 1996

Senior Member

Francesco (francesco.spada@jrc.it) writes:

> I'm particulary interested in this keyword since I have many problem
> with colors.
>
> First of all I'm working with IDL 5.4 for win and I use WIN98 (16.8
> millions of colors (24 bit)).
>
> For fixing some color problem I use (taken from the demo of IDL, I
> don't know what they mean):
>
> device, decomposed=0
> device, bypass_translation=0
>
> When I make some contour with /fill all is all right, but when I try
> to use xinteranimate
>
> wdelete
> xinteranimate, set = [xw,yw,hrs]
> for i=0,hrs-1 do begin
> xinteranimate,frame=i,image=imgs(*,*,i)
> endfor
> xinteranimate
>
> I get completely different (and not really nice!!) colors from the
> imgs that I see before the animation.
>
> Does anyone can tell me why and what's the meaning (in a simpler way
> than that of the IDL man) of the device keyword I use?

In a simple way, DECOMPOSED=0 means don't take this number
I specify for a color and decompose it into 8-bits of red
information, and 8-bits of green information, and 8-bits
of blue information. Instead, use the number I specify as
an index into a color lookup table, and use the RGB values you
find there to specify the color I want.

You can learn a great deal about color by reading these
articles on my web page:

http://www.dfanning.com/documents/tips.html#UsingColors

Or, you could purchase my book, which only costs about
16 million lira in Italy, I think. :-)

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@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]

		Array Dimensions and WRITE_GIF By: Burkhard Prause on Fri, 26 December 1997 00:00
		Re: array dimensions By: wmconnolley on Mon, 09 April 2001 02:40
		Re: array dimensions By: Martin Schultz on Mon, 09 April 2001 01:16
		Re: array dimensions By: Paul van Delst on Mon, 09 April 2001 07:56
		Re: array dimensions By: davidf on Sun, 08 April 2001 20:13
		Re: array dimensions By: James Kuyper on Mon, 09 April 2001 08:20
		Re: array dimensions By: Craig Markwardt on Mon, 09 April 2001 06:23
		Re: array dimensions By: Richard French on Sun, 08 April 2001 19:42
		Re: array dimensions By: Paul van Delst on Mon, 09 April 2001 07:52
		Re: array dimensions By: davidf on Sun, 08 April 2001 18:29
		Re: array dimensions By: web on Sun, 08 April 2001 17:55
		Re: array dimensions By: davidf on Sun, 08 April 2001 09:11
		Re: array dimensions By: francesco.spada on Sun, 08 April 2001 08:38
		Re: array dimensions By: Craig Markwardt on Sun, 08 April 2001 07:33
		Re: array dimensions By: davidf on Sun, 08 April 2001 07:09
		Re: array dimensions By: Craig Markwardt on Sun, 08 April 2001 06:37
		Re: array dimensions By: davidf on Sat, 07 April 2001 18:40
		Re: array dimensions By: davidf on Sat, 07 April 2001 18:38
		Re: array dimensions By: Richard French on Sat, 07 April 2001 16:41
		Re: array dimensions By: Alex Schuster on Mon, 09 April 2001 08:28
		Re: array dimensions By: davidf on Sat, 07 April 2001 07:03

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