[torrente]

Dear Paraview friends,
I have data of concentrations on curved surfaces which are encoded as
vtk, so I can visualize the concentrations on the surfaces.
The surfaces are 2D surfaces embedded in 3D.
I want to evaluate one dimensional profiles of the distribution of
the concentration across trajectories on the surface.
This means, I need to know how to let paraview know where
I want to put my trajectory, likely with some mouse movement
after some sort of initializing the procedure, and afterwards I would
like to get some sort of x-y-graph where the path length is variable x
and the concentration variable y.
Hence, the color coding should be translated into an x-y-plot.
A more simple form would be to evaluate the concentration at
the surface at a special point, I also do not know how to evaluate
the concentration on a single point.....
Thank you very much for your help