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Re: transparent GIF pixels [message #21151 is a reply to message #21142]

Thu, 10 August 2000 00:00

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

davidf@dfanning.com (David Fanning) writes:

> Craig Markwardt (craigmnet@cow.physics.wisc.edu) writes:
>
>> David, I think he's talking specifically about GIF transparent pixels.
>> I understand that you can reserve one GIF color to be transparent, so
>> to speak. Any pixels with that color are not rendered, so any
>> background graphics can show through. This can be especially useful
>> in web programming. I don't think he's actually trying to render it
>> on the screen himself.
>
> I'm not so sure. But I admit "I would like to make them transparent
> while the image is in memory." could be open to interpretation.
> I thought he wanted to see transparent pixels in IDL. Why else would
> he be saving and reading them back?

I think he said he wanted to *avoid* writing and then reading back.
Other than that let's keep agreeing.

Craig

--
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Craig B. Markwardt, Ph.D. EMAIL: craigmnet@cow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
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[Message index]

		Re: transparent GIF pixels By: Craig Markwardt on Thu, 10 August 2000 00:00
		Re: transparent GIF pixels By: Kenneth Mankoff on Thu, 10 August 2000 00:00
		Re: transparent GIF pixels By: Craig Markwardt on Thu, 10 August 2000 00:00
		Re: transparent GIF pixels By: davidf on Thu, 10 August 2000 00:00
		Re: transparent GIF pixels By: Craig Markwardt on Thu, 10 August 2000 00:00
		Re: transparent GIF pixels By: davidf on Thu, 10 August 2000 00:00

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