[Paraview] vtkDEMReader - DEM files rendered in 2D in Paraview

[Bikash Agarwal]

I am trying to view DEM(Digital Elevation Model) files in Paraview 2.6. but
it is being rendered as 2D and the elevation is being represented as color
on the plane surface. So basically the  z-coordinate is being used to map it
by color. I looked over the code for quite some time but was unable to
pinpoint where exactly the class vtkDEMReader was reading the z-coord from
the data file.

I would like to be able to render a DEM file in 3D. Any help on how the
reader works will be appreciated. Has anyone ever tried modifying the class
this way?

Thanks,

Bikash
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