[vtkusers] plot height field figure

[David Doria]

On Fri, Apr 20, 2012 at 5:48 PM, zhixiu li <zhixiuli at gmail.com> wrote:

> Dear All,
> I have a dataset like this (in data.txt)
> 1 0 0
> 2 0 0
> 1 2 3
> 1 2 3
> ...
> the 1st column is x and the second col is y. the last column is the
> attribute of this point. I want to make a 3 D plot for each points(Z will
> the attribute value).
> How do I read this data file to VTK? Thank you very much!
>
> tianbu
>

Using a reader like this:
http://www.vtk.org/Wiki/VTK/Examples/Cxx/IO/SimplePointsReader

Will assume that the 3 values are XYZ coordinates. You can then color the
points by their Z value using this:

http://www.vtk.org/Wiki/VTK/Examples/Cxx/Meshes/ElevationFilter

David
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