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Re: transparent background [message #35366 is a reply to message #35283]

Thu, 05 June 2003 11:29

Rick Towler
Messages: 821
Registered: August 1998

Senior Member

"David Fanning" wrote in message ...
> Rick Towler writes:
>
>> FWIW, I can create an image with a transparent background with one step
and
>> a PC :)
>
> Well, how was that done? Because I didn't have any luck
> at all fooling around with it the other day for 15-20 minutes.

You didn't really fool around for 20 minutes, did you?

With the B/W linear color table loaded:

IDL> test = BYTARR(200,200)
IDL> test[100:199,*] = 200
IDL> tvlct, r,g,b,/get
IDL> write_png,'test.png',test,r,g,b,TRANSPARENT=[0]

In PP, Insert -> Picture -> From File... and select 'test.png'

I have a 200x200 image, right half is lt. gray, left half is transparent.

Load test.png up in Photoshop and the left half of the image is transparent
too.

-r

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[Message index]

		Re: transparent background By: David Fanning on Wed, 04 June 2003 17:40
		Re: transparent background By: Rick Towler on Wed, 04 June 2003 17:13
		Re: transparent background By: GrahamWilsonCA on Wed, 04 June 2003 16:43
		Re: transparent background By: Rick Towler on Tue, 03 June 2003 10:20
		Re: transparent background By: R.Bauer on Tue, 03 June 2003 10:25
		Re: transparent background By: Rick Towler on Thu, 05 June 2003 11:29

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