| Re: overcome postscript transparency ? [message #40610 is a reply to message #40608] |
Mon, 23 August 2004 00:26   |
Klemens Barfus
Messages: 45
Registered: December 2002
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Member |
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Hello David,
there seems to be the possibility for transparency in postscript plots.
Googling I found something called the alpha transparency described for
example in
www.tinaja.com/glib/alphadem.pdf
The question is now: is there keyword in IDL to change these
transparency ? Or do I have to change / can I change the transparency in
the postscript file, when I open it with the text editor ?
Searching for the word alpha in the postscript file, I have not found it.
- by the way: I use IDL Version 5.2.1 -
Thanks for your help !
Klemens
David Fanning wrote:
> Klemens Barfus writes:
>
>
>> is there any chance to overcome the transparency of postscript plots.
>> Making a 3 dimensional plot, the post script output looks bad becauce of
>> the transparency of the -poly- filled areas. But I do not know in
>> advance, which areas have to be plotted because they can be seen in the
>> completed plot. Otherwise, the same plot in tif format looks bad even if
>> I scale up the window to 2400 x 2400 pixel, espacially the font, but the
>> lines, too.
>> -working with direct graphics-
>> Any suggestions ?
>
>
> As far as I know, there is no "transparency" in PostScript
> output. If you are having problems with this, it is
> probably due to the order in which things are being
> drawn. Can we see some code? A picture of a plot?
> Something that might give us a clue?
>
> Cheers,
>
> David
>
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