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Re: Displaying a plot and a true color image on the same window [message #24892 is a reply to message #24891]

Sun, 29 April 2001 17:09

Alok Nagdev
Messages: 11
Registered: April 2001

Junior Member

<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
Thanks David, but I'm still having the same problem...probably
I couldnt phrase the problem properly. Here it is again:
I'm displaying some bytescaled elevation data
using color table (in my case its RAINBOW with top WHITE) below this I'm
trying to display true color jpeg images on the same window. As soon as
the color table is loaded the color images are displayed according to the
color table being used, and loose their true color.
I found that this is due to the color table as
if I dont load the color table, images are displayed perfectly fine.
Hope this time I phrased it correctly!!
Thanks,
 -Alok
  
David Fanning wrote:
<blockquote TYPE=CITE> 
 Well, now that I read this a little more closely,
 I think the problem is that you are trying to
 display these images on an 8-bit display. This
 makes the problem more difficult, but not
 impossible.
What you need to do is make all your images and your
 color bar share the same color space. I think the
 sensible way to do this is to use COLOR_QUAN with
 the CUBE keyword set to 6 on all your image. This
 will quantitize your colors to 216 values that
 can faithfully (more or less) represent both the
 images and (I presume) color bar.
Cheers,
David
 --
 David Fanning, Ph.D.
 Fanning Software Consulting
 Phone: 970-221-0438 E-Mail: davidf@dfanning.com
 Coyote's Guide to IDL Programming: <a href="http://www.dfanning.com/">http://www.dfanning.com/</a>
 Toll-Free IDL Book Orders: 1-888-461-0155</blockquote>
</html>

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[Message index]

		Re: Displaying a plot and a true color image on the same window By: Liam E. Gumley on Mon, 30 April 2001 07:09
		Re: Displaying a plot and a true color image on the same window By: davidf on Sun, 29 April 2001 18:29
		Re: Displaying a plot and a true color image on the same window By: davidf on Sun, 29 April 2001 18:21
		Re: Displaying a plot and a true color image on the same window By: Alok Nagdev on Sun, 29 April 2001 17:09
		Re: Displaying a plot and a true color image on the same window By: davidf on Sat, 28 April 2001 18:22
		Re: Displaying a plot and a true color image on the same window By: davidf on Sat, 28 April 2001 18:06
		Re: Displaying a plot and a true color image on the same window By: Martin Schultz on Thu, 03 May 2001 07:25

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