| map_image or map_patch? [message #8750] |
Wed, 23 April 1997 00:00 |
Ian E. Sprod
Messages: 12
Registered: February 1995
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Junior Member |
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Dear IDL users,
I have recently started to use map_patch for warping data to various map
projections and have been pretty happy with the results.
Some recenr testing I have done shows that map_patch is about 5 times
slower in IDL 5 compared to IDL 4. This is a little troubling as
map_image only slowed down by 1.5. These are all rough figures you
understand!
I was womdering if anyone had any pointers in choosing which of
map_image or map_patch to use in a given case? If it helps, most of
my data is 1x1 degree regular grids of ints or floats.
Thanks,
Ian Sprod
CIRES
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| Re: map_image or map_patch? [message #8849 is a reply to message #8750] |
Wed, 23 April 1997 00:00  |
davidf
Messages: 2866
Registered: September 1996
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Senior Member |
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Ian Spord writes:
> I was womdering if anyone had any pointers in choosing which of
> map_image or map_patch to use in a given case? If it helps, most of
> my data is 1x1 degree regular grids of ints or floats.
I always thought the rule of thumb was this: (1) Try Map_Image.
(2) If that doesn't work, try Map_Patch. (3) If that doesn't work
either, order NCAR graphics. :-)
David
----------------------------------------------------------
David Fanning, Ph.D.
Fanning Software Consulting
Customizable IDL Programming Courses
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com
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