[Paraview] Noob Matlab exporting question

[Berk Geveci]

What you should do is to create an unstructured grid that has 1 point
per sphere and no geometry (no cells). In this dataset, store the
radius and temperature as point centered attributes. Then you can use
the glyph filter to place a sphere at each point. The sizes of these
sphere can be scaled by the radius attribute. They can also be colored
based on the temperature. The VTK file formats are described here:
http://www.vtk.org/pdf/file-formats.pdf. I recommend using the legacy
formats as they are the easiest to write.

-berk

On Fri, Jun 27, 2008 at 5:30 PM, Michael Koplow <mkoplow at berkeley.edu> wrote:
> Hello, I am looking for advice to see if this is achievable (I believe it
> should be), and how to do it.
>
> I have matlab data consisting of an array of particles (spheres) where I
> know the radius and center points of each sphere:  centers = [x1 y1 z1; x2
> y2 z2; x3 y3 z3; ....].  I also have transient data about the temperature of
> each particle (assumed to be constant per particle) in a matrix:
>  temperatures = [t1_s1 t2_s1 t3_s1; t1_s2 t2_s2 t3_s2; t1_s3 t2_s3 t3_s3;
> ....].
>
> Is it possible to import this data into paraview and use the sphere command
> to plot all of the data?  The dataset can be large with the number of
> particles ranging up to 400k.  In matlab, there was no need to store
> discretized information about the particle other than the center locations
> because I assumed constant properties throughout each particle.
>
> I know about the vtk matlab wiki and storing the data as an ascii file, but
> is there a way to set in the ascii file that the points correspond to sphere
> centers and not a mesh of points for each sphere?
>
> Thanks for any help!
> Mike
>
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