| Re: off-white background in IDL-generated bitmaps [message #30357 is a reply to message #30351] |
Thu, 18 April 2002 10:34   |
nobody@nowhere.com (S
Messages: 55
Registered: July 2001
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Member |
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Thanks David! So I am correct that it is an indexing problem, apparently
encountered before. Many bows and endless adulation, you are a trememdous
source of IDL knowledge! I'll give the Cube=6 a try and see if it helps,
thanks again!
On Thu, 18 Apr 2002 11:21:21 -0600, David Fanning <david@dfanning.com> wrote:
> Hi Steve Smith<steven_smith>, you write:
>
>> I generated some bitmap images (GIF, BMP) using IDL
>> and tvrd, they look good on the screen, but when inserted into MS-WORD
>> documents, the formerly white background becomes somewhat darkened or
>> shaded and stands off from the white page background. Is there a 'trick'
>> to make a bitmap image in IDL (with white background) that won't do
>> this? I suspect it has something to do with color indexing, so perhaps
>> someone will say 'use a non-indexed image format'. I do need compression,
>> and since the bitmaps have text in them, JPEG usually isn't a good idea.
>> Ideally, a vector-drawn text combined with the bitmapped portion of the
>> figure would be best, but I'm not aware of a way to do this in IDL. I'm
>> using idl 5.2, by the way. thanks for any suggestions!
>
> Here is an article that explains what is going on and how
> to correct it:
>
> http://www.dfanning.com/color_tips/gif_gray.html
>
> Cheers,
>
> David
>
> --
> David W. Fanning, Ph.D.
> Fanning Software Consulting
> 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
--
Steve S.
steve@NOSPAMmailaps.org
remove NOSPAM before replying
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