| basic 3D data manipulation question [message #27804] |
Wed, 07 November 2001 10:28 |
judy.karpen
Messages: 2
Registered: November 2001
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Junior Member |
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Hi,
Sorry for posting if this is an easy question to answer, but so far
I've combed the manuals and the netgroup archives without finding one.
I don't use IDL all the time, so I am a perpetual beginner
unfortunately.
I am trying to visualize 3D magnetic field lines, by updating an IDL
program written by a colleague that assumes uniformly gridded data. My
"data" (simulation results, actually) are on a nonuniform cartesian
grid (250x95x95), so my first step is to project the field components
onto a uniform grid in all directions. I've found a number of routines
that do the opposite --- that is, interpolate a regularly gridded
function onto an irregular set of points -- but nothing appropriate.
Perhaps I am misunderstanding something in the GRID3 documentation,
but it says that the input arrays x,y,z, and f have to have the same
number of elements, which rules out having different numbers of points
in each direction.Of course I can do the interpolation manually but I
can't believe there isnt a more efficient preexisting routine out
there..... Note that this is a true 3D dataset, not this nonsense of
2D datasets with a dependent function being called 3D!
Thanks very much for your help! (and greetings to my solar colleagues
out there)
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