TGraph2D Delaunay interpolation holes

There are some holes when I draw a TGraph2D.

There is an example in the attached root file. You can reproduce the problem by doing:



You can see the holes along the x = y axis.
output_file.root (6.88 KB)

I guess that’s similar to this:

I am looking at it

Actually the plot looks fine… do:

graph2Dexp68->Draw(“surf1”); // draw the interpolated hit as a surface
graph2Dexp68->Draw(“P0SAME”); // draw the tgraph2d’s points

And you see that both matches…