| Coyote Graphics 8-bit PNG Output [message #79759] |
Tue, 03 April 2012 17:50 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Folks,
Nothing like a bunch of new program updates to bring the
program change requests out of the woodwork! One request,
for 8-bit PNG output to cut down on PNG file size, was easy
enough to implement, although I do so reluctantly. God
knows I've spent half my life trying to move people away
from the 8-bit mindset, but it seems the world is full
of too many conservative scientists to believe this is
ever going to happen in my lifetime.
I concede reluctantly, but in a way I hope few people,
and only those who read the documentation (that is, a
handful, at most), will notice. PS_End will now check
for a flag that can be set with cgWindow_SetDefs to
see if an 8-bit or 24-bit PNG file should be created.
If you prefer 8-bit PNG files be created, do this:
cgWindow_SetDefs, IM_PNG8=1
If you prefer the normal, 24-bit PNG files, do nothing
or set this keyword to 0.
This is an all or nothing deal. It is not possible
to change this for a particular cgWindow with cgControl.
You will need the new Coyote Library programs from
earlier today, plus these three additional programs:
http://www.idlcoyote.com/programs/ps_end.pro
http://www.idlcoyote.com/programs/cgwindow_setdefs.pro
http://www.idlcoyote.com/programs/cgwindow_getdefs.pro
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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