[Paraview] particles rendering with input radii

[Griffa, Michele]

Hello everybody

I'm using Paraview 3.4.0 to visualize 2D/3D geometrical models of systems made of spherical particles.
My input file contains the information about a VTK unstructured grid.
Each node of the grid is the center of one spherical particle.
Associate to each node there is a scalar parameter representing the radius of the particle.

after importing the VTK unstructured grid dataset I applied to it the sphere glyph filter.
I choose to scale each glyph according to the scalar PointData "radius" in order to visualize different sphere according to their size.

Considering that a value "Radius" is also defined in the "Glyph Type - Sphere2 section of the filter's "Properties" tab, which will be the final actual size for each spherical particle ?

I mean, how does Paraview handle simultaneously there two pieces of information in the case of multiple spherical glyphs with different size ?
One piece is the fixed radius, the other is the imported value for the radius used for scaling the size of the different sphere ?

I guess my question is strictly related to this other question: how is the scaling performed when a 1D array of scalars is used as Scale Mode ?

Any Tutorial or source of information about this detail ?

How can I choose the "Radius" parameter in the "Properties" tab of the glyph filter such that the actual radii of the rendered particles correspond to the real values assigned to the unstructured grid ?

Thanks a lot for your help and support

Best regards

Michele 
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Michele Griffa, Ph.D.
EMPA, Swiss Federal Laboratories for Materials Testing and Research (ETH Domain)

Überlandstrasse 129
8600, Dübendorf, Switzerland

Ph.: +41 (0) 44 823 4789
Fax: +41 (0) 44 823 4009
email: michele.griffa at empa.ch
Web site: http://www.empa.ch

Personal web site: http://www.calcolodistr.altervista.org
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