| Re: plotting graphics for web pages [message #60511 is a reply to message #60337] |
Tue, 20 May 2008 11:29   |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Paul van Delst writes:
> I assume you're pulling my whizzer here since I know I don't do anything that isn't
> already known. Maybe it's just a convention thing on my part?
Despite the fact that Paul thinks everyone knows how to produce
IDL output for display on the Web and in Powerpoint slides, *I*
didn't know it. So, as is my practice, I wrote it down so I
won't forget it.
Actually, I was slightly more ambitious than that, since I
also wrote a couple of new programs for the Coyote Library
while I was about it to make this even easier to accomplish.
(I need lots of graphics for my web page, so I figured an
up-front investment now would save me lots of time later.)
In particular, I wrote my own version of Liam's wonderful
programs PSON and PSOFF, called PS_START and PS_END because
I am inordinately fond of PSConfig and hate to give that
up. (One of the nicest programs I ever wrote, if you don't
look at the code. And, incidentally, I found a bug in that
code--after all these years!!--so if you want to use the
new routines, you will also need a new version of
fsc_psconfig__define.pro. I'd get the whole damn library,
since there have been a ton of changes in the past week or
so.)
One feature of PS_END that you wont' find in PSOFF is
the ability to immediately convert IDL PostScript output
to JPEG, PNG, or TIFF output, simply by setting the
appropriate keyword. (Although I expect to see this
functionality in PSOFF by the end of the day. :-)
In any case, if you want to have a look at the article,
you can find it here:
http://www.dfanning.com/graphics_tips/weboutput.html
It has rather dramatic pictures, I think, of what normal
PNG file output looks like, and the same output converted
with ImageMagick. Clearly, there is no possible way I am
ever returning to TVREAD. :-(
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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