isosurface on 3d unstructured triangular grid?

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Jan
Jan 2011-6-23
Hi all, recently I came across the isosurface function. What I would like to do is visualize data from a 3d finite element computation, where temperature distributions are of interest. Basically the isosurface function seems like the best choice, BUT: My data are on an unstructured, 3-dimensional, triangular grid.
While trying to execute the isosurface command with a test case I always get a "x,y,z vectors need to be monotonic" error. For an unstructured grid there will not be monotonicity in those vectors.
Is there any way to visualize isosurfaces or isovolumes from my kind of grid?
Jan

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回答（3 个）

Sean de Wolski
Sean de Wolski 2011-6-23
Use patch directly with your triangular data.
Walter Roberson
Walter Roberson 2011-6-23
You may need to use interpn() to convert to a regular grid.
Patrick Kalita
Patrick Kalita 2011-6-23
Have a look at the answer to this question.

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