DPlot

Thanks for AddData(DDE) answer.
I went smooth having a Data-3DR 30*30 plot display which is great.
Then I executeded GenerateMesh(DDE). It did generate a new document with specified value at x and y but it didn't bring over and calculate all Z'values at previous document. All Z'value are zero at new document. Did I do anything wrong?

[code]
dPlot_AddData(DocNum, DATA_3DR, 900, 1, X, X);
dPlot_Command(DocNum,"[GenerateMesh(119,119,0,0,29,29,0,0,1)]");

Thanks a lot your time.

Tom[/code]

You're not doing anything wrong, this is just a poor documentation and error-checking problem. The last parameter (number of control points) should be 3 or greater. 4 generally works well.