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Re: Interpolation/gridding on a sphere? [message #4668]

Wed, 12 July 1995 00:00

sterner
Messages: 106
Registered: February 1991

Senior Member

tmote@unlinfo.unl.edu (thomas mote) writes:

> I have a need to interpolate and grid climate data for the northern
> hemisphere. I wish to know if anyone has IDL code to perform
> interpolation across the surface of a sphere. Can the routines in the
> IDL user's library be modified to accomplish this?

You might be in luck if you have IDL Version 4. Here is an extract
from the online help:

SPH_SCAT
The SPH_SCAT function performs spherical gridding. Scattered samples on
the surface of a sphere are interpolated to a regular grid. This routine
is a convenient interface to the spherical gridding and interpolation
provided by TRIANGULATE and TRIGRID. The returned value of the function
is a regularly-interpolated grid.

I have not tried this yet.

Ray Sterner sterner@tesla.jhuapl.edu
The Johns Hopkins University North latitude 39.16 degrees.
Applied Physics Laboratory West longitude 76.90 degrees.
Laurel, MD 20723-6099
WWW Home page: ftp://fermi.jhuapl.edu/www/s1r/people/res/res.html

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		Re: Interpolation/gridding on a sphere? By: sterner on Wed, 12 July 1995 00:00
		Re: Interpolation/gridding on a sphere? By: dan on Wed, 12 July 1995 00:00

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