[vtkusers] re: Try again - merging

[Jared Cohen]

  I think I may have a similar problem. I built a sphere by creating a 
PlaneSource and passing it through a TransformPolyDataFilter using a 
SphericalTransform. I ended up with a perfect sphere *except* for one 
missing strip of polys along the longitude=0 line. I closed this gap by 
appending points to one end of the plane, before warping it. I also 
tried to then pass the data into a CleanPolyData filter, to merge the 
coincident points; but I ended up with a really weird effect, and I 
couldn't fix it; I eventually had to give up on merging the points.

Take a look at this screenshot; is this similar to what you're experiencing?
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