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<DIV><FONT face=Arial size=2>Hello all,</FONT></DIV>
<DIV><FONT face=Arial size=2>I am fairly new to vtk (about a week) and am very
impressed with what I have seen so far.</FONT></DIV>
<DIV><FONT face=Arial size=2>I am developing a visualization application to view
Finite element meshes and results. I have</FONT></DIV>
<DIV><FONT face=Arial size=2>a question which I would appreciate some
response to.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> Reading through the mail archive the
problem of 'material regions' within a finite element mesh</FONT></DIV>
<DIV><FONT face=Arial size=2> arose. As you may or may not know, the
stresses (and strains) obtained from a FE simulation</FONT></DIV>
<DIV><FONT face=Arial size=2> are discontinuous across these
boundaries. The question then is how to produce contours (and </FONT></DIV>
<DIV><FONT face=Arial size=2> colour maps) for these regions. Has
anyone got any ideas for this ??</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> I have created the concept</FONT><FONT
face=Arial size=2> of mesh regions where each one has a
vtkUnstructuredGrid. The field</FONT></DIV>
<DIV><FONT face=Arial size=2> data for a specific region can
then</FONT><FONT face=Arial size=2> be set for the grid of that region and I get
the one-to-one correlation</FONT></DIV>
<DIV><FONT face=Arial size=2> between the point field data
and</FONT><FONT face=Arial size=2> the points of the grid (this is a necessity
right ???).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> This will work fine (I hope), however
and few problems will arise. If I want to display the point ids</FONT></DIV>
<DIV><FONT face=Arial size=2> of a certain region I am unable to use
vtkIdFilter because there is a local->global mapping of the</FONT></DIV>
<DIV><FONT face=Arial size=2> point ids (and the cell ids). Is there
a way around this.??? Maybe it is possible to create the correct
data</FONT></DIV>
<DIV><FONT face=Arial size=2> set for a vtkLabeledDataMapper
</FONT><FONT face=Arial size=2>using ids held in a vtkIdList???</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanks in advance for any ideas/help.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Simon</FONT></DIV>
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