| Re: loading colors in tvscl [message #54550] |
Tue, 26 June 2007 14:43 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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kostis writes:
> Yes im in DirectColor...
Ah... :-)
> It looks easy to fix
> but i dont understand which is this IDL start-up file
> and where do i find it..
You create it with a text editor.
If you don't want to use it, or you have difficulty
pointing your IDL_STARTUP environment variable at it
after you create it, just be sure that you
type this command in your IDL session BEFORE you
open a graphics window of any kind:
IDL> Device, TRUE_COLOR=24
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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| Re: loading colors in tvscl [message #54552 is a reply to message #54550] |
Tue, 26 June 2007 14:02  |
kostis
Messages: 17
Registered: December 2006
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Junior Member |
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Yes im in DirectColor...
It looks easy to fix
but i dont understand which is this IDL start-up file
and where do i find it..
I know its a stupid question but could anyone tell me???
Thanx!
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| Re: loading colors in tvscl [message #54555 is a reply to message #54552] |
Tue, 26 June 2007 13:16 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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kostis writes:
> I tried the following but still no color....
> If i wasnt permitted to do that i should see a message right?
>
> LoadCT, 5, NColors=100, Bottom=100
> for i=1,100 do begin
> image=congrid(bytscl(ARRAY[*,*,i]),500,500)
> TVSCALE,ROTATE(image,1), NColors=100, Bottom=100
> endfor
>
> LoadCT, 33
> for i=1,100 do begin
> image=congrid(bytscl(ARRAY[*,*,i]),500,500)
> TVIMAGE,ROTATE(image,1)
> endfor
Well, then. You have bigger problems than I thought. :-)
My guess is that you are on a LINUX computer that is
using a DirectColor visual. You can see if this is so,
by typing this:
IDL> Device, Get_Visual_Name=theVisual & Print, theVisual
If you see DirectColor printed out, read this article
IMMEDIATELY:
http://www.dfanning.com/misc_tips/idlsetup.html
As long as you are in DirectColor, *nothing* will make sense to
you. :-)
If this is not the case, send us the result of this command:
IDL> Help, /Device
And we will see what to do next.
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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| Re: loading colors in tvscl [message #54556 is a reply to message #54555] |
Tue, 26 June 2007 12:43 |
kostis
Messages: 17
Registered: December 2006
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Junior Member |
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On Jun 26, 8:42 pm, David Fanning <n...@dfanning.com> wrote:
> kostis writes:
>> I cant manage to display an array with tvscl using a color table taken
>> by XLoadCT
>> The table is loaded normally but i dont see any colors
>> What's wrong with my routine?
>> Any suggestions on this??
>
>> LoadCT, 33
>> for i=1,100 do begin
>> image=congrid(bytscl(ARRAY[*,*,i]),500,500)
>> tvscl,ROTATE(image,1)
>> endfor
>
> You might want to consider a routine like TVScale or
> TVImage that is a little smarter at figuring out
> what color decomposition model you want to be using:
>
> http://www.dfanning.com/programs/tvscale.pro
> http://www.dfanning.com/programs/tvimage.pro
>
> Cheers,
>
> David
>
> --
> David Fanning, Ph.D.
> Fanning Software Consulting, Inc.
> Coyote's Guide to IDL Programming:http://www.dfanning.com/
> Sepore ma de ni thui. ("Perhaps thou speakest truth.")
I tried the following but still no color....
If i wasnt permitted to do that i should see a message right?
LoadCT, 5, NColors=100, Bottom=100
for i=1,100 do begin
image=congrid(bytscl(ARRAY[*,*,i]),500,500)
TVSCALE,ROTATE(image,1), NColors=100, Bottom=100
endfor
LoadCT, 33
for i=1,100 do begin
image=congrid(bytscl(ARRAY[*,*,i]),500,500)
TVIMAGE,ROTATE(image,1)
endfor
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| Re: loading colors in tvscl [message #54559 is a reply to message #54556] |
Tue, 26 June 2007 10:42 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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kostis writes:
> I cant manage to display an array with tvscl using a color table taken
> by XLoadCT
> The table is loaded normally but i dont see any colors
> What's wrong with my routine?
> Any suggestions on this??
>
> LoadCT, 33
> for i=1,100 do begin
> image=congrid(bytscl(ARRAY[*,*,i]),500,500)
> tvscl,ROTATE(image,1)
> endfor
You might want to consider a routine like TVScale or
TVImage that is a little smarter at figuring out
what color decomposition model you want to be using:
http://www.dfanning.com/programs/tvscale.pro
http://www.dfanning.com/programs/tvimage.pro
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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| Re: loading colors in tvscl [message #54560 is a reply to message #54559] |
Tue, 26 June 2007 10:14 |
Mike[2]
Messages: 99
Registered: December 2005
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Member |
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On Jun 26, 12:34 pm, kostis <kostis...@gmail.com> wrote:
> I cant manage to display an array with tvscl using a color table taken
> by XLoadCT
> The table is loaded normally but i dont see any colors
> What's wrong with my routine?
> Any suggestions on this??
Could be that your display is decomposed:
N = 100
img = dist(N,N)
window, xsize=2*N, ysize=N
device, get_decomposed=decomposed
print, decomposed
device, decomposed=0
tvscl, img, 0
device, decomposed=1
tvscl, img, 1
Mike
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