| interpolating a mesh and computing its area [message #67972] |
Wed, 16 September 2009 04:21  |
aetherlux
Messages: 12
Registered: July 2006
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Junior Member |
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Hi everybody,
I have a 4D subset of data: regular grid of horizontal points (x,y) on
a sphere, each one with several z and a value "a" associated for each
z. The z are fixed.
I want to interpolate the "a" values to predefined ones of my
interest. That is, after the interpolation I should have new (x,y) for
the fixed "a" and "z".
And after this I would like to compute the area enclosed by each one
of the new fixed "a" values.
I was thinking about the best way to do it with IDL. Could it be
possible a mix of interpolate/triangulate + mesh_surfacearea? Is it
possible to use IDLanROIGroup::ComputeMesh for such a thing?
I have a couple of ideas about how to do it, but I am looking for the
"smartest" one.
Any feedback is welcomed.
Thank you.
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| Re: interpolating a mesh and computing its area [message #68118 is a reply to message #67972] |
Wed, 16 September 2009 08:12  |
Wout De Nolf
Messages: 194
Registered: October 2008
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Senior Member |
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On Wed, 16 Sep 2009 04:21:18 -0700 (PDT), aetherlux
<aetherlux@gmail.com> wrote:
> regular grid of horizontal points (x,y) on
> a sphere, each one with several z and a value "a" associated for each
> z. The z are fixed.
This is not just spherical gridding is it? You want interpolation of
the vectorfield F: (a,z) -> (x,y) ?
The only way I can think of is interpolate x(a,z) and y(a,z), although
I don't know whether this makes any physiscal sense in your case.
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