Am Dienstag, den 05.08.2008, 12:43 -0500 schrieb Daniel J Sebald:
Bill Denney wrote:
I would expect to see the axis background color. If the axis background
color is set to none, then I would expect to see the figure background
color. I believe that if you set the figure background color to none in
matlab, you see a cross-hatched pattern. When exporting, I would
anticipate that the graphics backend would take alpha into account
relative to the output device, so if the output was to ps or pdf, it
would convert the background color to the color as visible on the screen.
I'm not saying that this is easy, just that-- to me-- the above is the
right way to do it.
In my opinion, the right way is for PostScript to handle alpha
blending. Wish it would. It's the easiest place to implement such a
feature, i.e., at the last step just blend the contents together.
I'm not sure I understand, but Postscript seems to support an alpha
channel:
http://tug.org/PSTricks/main.cgi?file=Examples/Colors/colors#transparency
The code example needs a development version of pstricks.
The main problem is that most postscript _viewers_ don't handle
transparency, so one usually converts to PDF.