[vtkusers] plot height field figure

[Bill Lorensen]

Use Delaunay2D as illustrated here:
http://www.vtk.org/Wiki/VTK/Examples/Cxx/Filters/TriangulateTerrainMap


On Fri, Apr 20, 2012 at 11:13 PM, zhixiu li <zhixiuli at gmail.com> wrote:

> Thank you. But the method in the second link still can't make a 3D plot. I
> can draw a color plot and save it as png file and the read this png file
> then make a 3D plot. But I think there should be easier way to make a 3D
> plot.
>
>
> On Fri, Apr 20, 2012 at 6:25 PM, David Doria <daviddoria at gmail.com> wrote:
>
>> 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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