| Drizzling Algorithms [message #36561] |
Fri, 26 September 2003 05:53 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Folks,
After waking up at 2:30 AM this morning, still lamenting
a couple of forehands I'd like to hit over again in the
match last night, I decided I'd just do a bit of work. :-(
I've had a couple of things in my Pure Gold pile that
I haven't had the time to get to for awhile. Both new
articles are taken from extremely interesting IDL
newsgroup discussions from a year or so ago.
The first one is concerned with the different values for
SIGMA and CHI_SQUARE in various IDL curve fitting
routines, and the necessity of weighting your fit if you
want to make sense of these values. I thought this was
an excellent discussion and one that should be more widely
read:
http://www.dfanning.com/math_tips/sigma.html
The second article is another dazzling one anchored
by JD about "drizzing" algorithms. No, we are not talking
about chocolate sprinkles on ice-cream sundaes. Drizzing
algorithms are used in the reconstruction or warping of
images from undersampled or dithered data. (I don't know,
you'll have to read the article!) It's another can't miss
hit for you Histogram fans.
http://www.dfanning.com/code_tips/drizzling.html
I'm going back to bed now and see if I can't put last night's
pain out of my mind.
Cheers,
David
P.S. The good news is that I *did* hit a down-the-line
backhand that stunned both of us! :-)
--
David W. Fanning, Ph.D.
Fanning Software Consulting, Inc.
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
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