[vtkusers] data for 3D surface

[Malcolm Drummond]

Hi Doug

I'd convert your data into x,y,z then run it through vtkDelaunay2D (which just uses x and y for the triangulation). This will give you a triangulated mesh as vtkPolyData output. The points do not need to be regular.

If you want a regular grid you could convert the z values to scalars with vtkElevation filter and resample with vtkShepardMethod. I did this a long, long time ago but could probably dig out some demo code if you want it.

HTH
Malcolm Drummond
GeoVision cc
  ----- Original Message ----- 
  From: Doug Henry 
  To: VTK 
  Sent: Thursday, June 30, 2005 2:46 PM
  Subject: [vtkusers] data for 3D surface


  I am looking to make a surface plot similar to matlab's surf function.  I have location (az,el) and magnitude data, which can easily be turned in to x,y,z data if needed, and I would like to create a simple surface (mesh) from this data.  What options are available for doing this?  Do I need data at regular intervals, I saw reference to structured and unstructured grids.

  -thanks




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