[vtkusers] extracting a surface from scalars

[Florian Sylla]

hello,

in the following code there are skalarDatas assigned to every grid
point. I used the LookupTable-function for coloring the different
skalarvalues. So i got a nice colored output(for example the pressure
gradient).
Now i'm trying to get a surface(3D) out of my colored objekt with only
one defined Scalarvalue, e.g. to see where in my object the pressure is
at exactly 2bar.

Someone can give me a hint?

Thanks
Flo


# set name of the scalar data array to stressselection
self.stressScalarArray.SetName(self.scalSelection)
            
# add scalar data array to main grid
self.warpVector.GetOutput().GetPointData().AddArray(self.stressScalarArray)
	    
# label scalar data array as an attribute to main grid
self.assignScalar = vtk.vtkAssignAttribute()
self.assignScalar.SetInput(self.warpVector.GetOutput())
self.assignScalar.Assign(self.scalSelection, 'SCALARS', 'POINT_DATA')
self.assignScalar.Update()
	    	    
	    self.warpVectorMapper.SetInput(self.assignScalar.GetOutput())
self.warpVectorMapper.SetLookupTable(self.lookup)