DEM data is just 2D image data with the scalar values representing the height field. So you do need to transform it to polygonal data to be able to render it and then cut it. <br><br>See IO/Testing/Tcl/dem.tcl for an example of how to transform it to a polydata.
<br><br>--<br>karthik<br><br><div><span class="gmail_quote">On 4/25/07, <b class="gmail_sendername">ҶԪֵ</b> <<a href="mailto:yeyuzh@163.com">yeyuzh@163.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
hello,everyone:<br> vtk can cut vtkPolyData type data,I want to cut the DEM data! who do you know the way to do it. need I to transform the imagedata to vtkpolydata? how to transform? thanks!<br><br><br><br>_______________________________________________
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