| Re: set_plot,'PS' and accurate colors? [message #33471 is a reply to message #33469] |
Wed, 08 January 2003 12:48   |
Liam E. Gumley
Messages: 378
Registered: January 2000
|
Senior Member |
|
|
The METAFILE and PRINTER graphics devices both support 24-bit color. Just
use
device, true_color=24
after you select the device. Note that the METAFILE graphics device is only
available on Windows platforms.
Cheers,
Liam.
Practical IDL Programming
http://www.gumley.com/
"dave" <knapp@rtt.colorado.edu.NOSPAM> wrote in message
news:3E1C8321.655CD000@rtt.colorado.edu.NOSPAM...
> I'm sorry I didn't see the response until just now.
>
> It's looking like IDL can't plot output graphics (PS, metafile etc) with
more than
> 256 colors ever, is that true?
>
> David Fanning wrote:
>
>> David Fanning (david@dfanning.com) writes:
>>
>>> dave (knapp@rtt.colorado.edu.NOSPAM) writes:
>>>
>>>> I just reduced the color depth in the plots (the range in the color
variable)
>>>> to less than 255 with no change in the output colors at all.
>>> Oh, I don't think so. :-)
>>> Can you show me how you constructed and loaded your
>>> color table and indexed the colors?
>>
>> This code produces a series of rainbow colored lines both on
>> the display and in a PostScript file.
>>
>> PRO Test
>> Loadct, 13 ; Rainbow colors
>> x =findgen(256)* 0.8/256. + .1
>> Window, XSize=800, YSize=400
>> for j=0,255 do plots, [x[j], x[j]], [0.1, 0.9], Color=j
>>
>> thisDevice = !D.Name
>> Set_Plot, 'ps', /Copy
>> Device, XSize=10, YSize=7, XOffset=0.5, File='test.ps', $
>> YOffset = 10.75, /Inches, /Landscape
>>
>> for j=0,255 do plots, [x[j], x[j]], [0.1, 0.9], Color=j
>>
>> Device, /Close
>> Set_Plot, thisDevice
>> END
>>
>> Cheers,
>>
>> David
>> --
>> David W. Fanning, Ph.D.
>> Fanning Software Consulting, Inc.
>> Phone: 970-221-0438, E-mail: david@dfanning.com
>> Coyote's Guide to IDL Programming: http://www.dfanning.com/
>> Toll-Free IDL Book Orders: 1-888-461-0155
>
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
