Thanks Mike, Eugene and Dominik! I was surprised to get so many replies.:)<br><br>OK, Mike, if you are interested, the attached is the data file I am using. vtkDelauney2D doesn't work... All I got from the filter is an irregular polygon, not a map.
<br><br>Eugene, is your solution different from claiming there are 3 cells in the data file directly? I have something in my data file like<br>CELL_DATA 3<br>SCALARS cell_scalars float 1<br>LOOKUP_TABLE colors<br>100 100 100
<br><br>But it doesn't hurt to give it a try.<br><br>Dominik, yes, it's a good way to check what is wrong. I should figure how to display ids...<br><br>I'll come back to report updates.<br><br>Janny<br>