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Re: Display Gifs, each w/diff color tables? [message #16243 is a reply to message #16239]

Tue, 13 July 1999 00:00

rmlongfield
Messages: 68
Registered: August 1998

Member

Hi All,
I'm beginning to hum Bruce Springsteen's song: "52 channels
and nothing on". My 24 colors must be brain-dead. I follow exactly
what David said in a previous post. The first line of my startup file
I have written: print!d.n_colors and I get 256. However, once I input
the lines that David said, I get the promised 16777216. Then I run:
@idlsave.sav , which is the following lines:

read_gif,'./GIF_FILES/test1.gif',image,r,g,b
tvlct,r,g,b
window,/free, retain=2
tv,bytscl(image)
read_gif,'./GIF_FILES/test2.gif',image,r,g,b
tvlct,r,g,b
window,/free, retain=2
tv,bytscl(image)
read_gif,'./GIF_FILES/test3.gif',image,r,g,b
tvlct,r,g,b
window,/free, retain=2
tv,bytscl(image)

The "crazy colors" I referred to earlier looks to me like the color
table is over-written and the new colors are being loaded into the
previously plotted image (which should not happen, according to the
rules). And that is why the colors change. They do not flash when I
move the mouse. They change when I type the TVLCT command.
The color vectors are completely different for each image.
I didn't make these images and they come from different people with
different computers. I'm going to try to send these programs home
where I have a PC and idl demo (which is only 5.0 but I hope will work.)

Until tomorrow,
Rose

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[Message index]

		Re: Display Gifs, each w/diff color tables? By: Liam Gumley on Tue, 13 July 1999 00:00
		Re: Display Gifs, each w/diff color tables? By: davidf on Tue, 13 July 1999 00:00
		Re: Display Gifs, each w/diff color tables? By: davidf on Tue, 13 July 1999 00:00
		Re: Display Gifs, each w/diff color tables? By: rmlongfield on Tue, 13 July 1999 00:00
		Re: Display Gifs, each w/diff color tables? By: Liam Gumley on Tue, 13 July 1999 00:00
		Re: Display Gifs, each w/diff color tables? By: davidf on Tue, 13 July 1999 00:00
		Re: Display Gifs, each w/diff color tables? By: steinhh on Tue, 13 July 1999 00:00
		Re: Display Gifs, each w/diff color tables? By: rmlongfield on Tue, 13 July 1999 00:00
		Re: Display Gifs, each w/diff color tables? By: davidf on Mon, 12 July 1999 00:00
		Re: Display Gifs, each w/diff color tables? By: Liam Gumley on Mon, 12 July 1999 00:00
		Re: Display Gifs, each w/diff color tables? By: Liam Gumley on Mon, 12 July 1999 00:00

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