| Re: Do sav files have only 256 colors [message #14978] |
Wed, 14 April 1999 00:00 |
davidf
Messages: 2866
Registered: September 1996
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Senior Member |
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Robert King (kingrj2@bp.com) writes:
> I had much trouble with getting colours (ie not greyscale) to work
> correctly in runtime versions of .sav files but [thanks to DWF :-)], I
> found that if you include "Device Decomposed=0" [oh no, not again! :-) ]
> at the beginning of your program and then create a .sav file, you can get
> colours to work correctly on any screen mode.
God bless you, Sir.
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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| Re: Do sav files have only 256 colors [message #14981 is a reply to message #14978] |
Wed, 14 April 1999 00:00  |
davidf
Messages: 2866
Registered: September 1996
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Senior Member |
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R.Bauer (R.Bauer@fz-juelich.de) writes:
> this is a small example.
> create a runtime sav file 'cbar_true.sav' in true color mode of your graphics
> card
> Then execute the file. You' ll see only greyscaled colors.
> If you change to 8bit color mode and you execute again you see a red to white
> colorsystem
>
>
> pro cbar_true
> loadct,3
> cbar
> wait,20
> end
I modified your program slightly, because I don't have the CBar
program. And, of course, I added Device, Decomposed=0 because
without it you will NEVER get colors anywhere (see posting by
our newest member, S. Daniel Kwak). But my program looks like
this:
pro cbar_true
device, decomposed=0
loadct,3
colorbar
wait, 20
end
And it ran *perfectly* on a Windows NT machine set in 24-bit
mode.
Are you sure you created the save file properly?
IDL> .Compile cbar_true
IDL> Resolve_All
IDL> Save, /Routines, File='cbar_true.sav'
If you forget the Resolve_All command, of course, then you
will never find the LOADCT command and that would cause
colors to be gray-scale.
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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| Re: Do sav files have only 256 colors [message #14983 is a reply to message #14978] |
Wed, 14 April 1999 00:00 |
Robert King
Messages: 9
Registered: March 1999
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Junior Member |
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R.Bauer <R.Bauer@fz-juelich.de> wrote :
> I found on NT 40 created sav files with graphics output on screen won't
> work with more than 256 colors.
> this is a small example.
> create a runtime sav file 'cbar_true.sav' in true color mode of your
graphics
> card
> Then execute the file. You' ll see only greyscaled colors.
> If you change to 8bit color mode and you execute again you see a red to
white
> colorsystem
>
Hi,
I'm quite new to IDL so forgive me if I've got the point to the question
wrong..
I had much trouble with getting colours (ie not greyscale) to work
correctly in runtime versions of .sav files but [thanks to DWF :-)], I
found that if you include "Device Decomposed=0" [oh no, not again! :-) ]
at the beginning of your program and then create a .sav file, you can get
colours to work correctly on any screen mode.
I hope that this helps,
Robert
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| Re: Do sav files have only 256 colors [message #14985 is a reply to message #14978] |
Wed, 14 April 1999 00:00 |
R.Bauer
Messages: 1424
Registered: November 1998
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Senior Member |
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David Fanning wrote:
> R.Bauer (R.Bauer@fz-juelich.de) writes:
>
>> I found on NT 40 created sav files with graphics output on screen won't
>> work with
>> more than 256 colors.
>
> Uh, you better explain this a little more. I'm dubious. :-)
>
> 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
You are right,
this is a small example.
create a runtime sav file 'cbar_true.sav' in true color mode of your graphics
card
Then execute the file. You' ll see only greyscaled colors.
If you change to 8bit color mode and you execute again you see a red to white
colorsystem
pro cbar_true
loadct,3
cbar
wait,20
end
R.Bauer
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