| Map Projection Doom and Gloom [message #66634] |
Sat, 30 May 2009 09:22  |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Folks,
I have spent nearly three days this week (not to mention
a beautiful weekend morning when I expected to be out
listening to Meadow Larks and learning native plant species)
entombed in map projection chaos and despair.
I have written about this before:
http://www.dfanning.com/map_tips/ephemeral.html
but it bears repeating. Especially so when it is so
damn easy to ignore good advice and proceed as if the
world were a friendly and reasonable place. I assure
you, it is not. :-(
Here is the crux of my advice: If you are going to use
a map structure for *ANYTHING* (and I really do mean
*ANYTHING*!!), then be absolutely sure you execute
the MAP_PROJ_INIT command *IMMEDIATELY* prior to using
the friggin' thing!
If anyone wants the details, I would be happy to provide
them, but I have been advised by my doctor to wait until
my blood pressure gets back under 200 before I do so. :-(
Cheers,
David
P.S. Let's just say what with all the wailing and gnashing of teeth
this week, I have a much better understanding of what some people
mean by the expression "hell on Earth".
--
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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