[Paraview] vtkDataArray::SetComponent()

[Randy Hudson]

For a long time, we've used vtkDataArray::SetComponent() to build an 
array of scalar (1-component) attributes to add to vtkUnstructuredGrid.

While I was looking the other way, so to speak, making my paraview 
particle reader work, and as a couple new versions of paraview were 
released, something changed so that, when I now use my other, 
vtkUnstructuredGrid-building reader, the loop that loads the attributes 
(with 2048 calls to SetComponent()) takes more than half a minute (as 
measured by clock()), which is glacially slow.  I haven't found any 
change I might've made that would explain this.

If I replace SetComponent() with SetValue() or SetTuple1, I get my speed 
back, but now isosurfaces are messed up as though there's no continuity 
bewteen cells.


Is there any reason I should be seeing these symptoms?


Thanks.

Randy.