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<DIV><FONT face=Arial size=2>Hi Doug</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>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.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>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.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>HTH</FONT></DIV>
<DIV>Malcolm Drummond<BR>GeoVision cc</DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=brilligent@gmail.com href="mailto:brilligent@gmail.com">Doug
Henry</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=vtkusers@vtk.org
href="mailto:vtkusers@vtk.org">VTK</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, June 30, 2005 2:46
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [vtkusers] data for 3D
surface</DIV>
<DIV><BR></DIV>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.<BR><BR>-thanks<BR><BR>
<P>
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