"Two of these three points are coincident"

[kame]

Hi,

Plotting a TGraph2D generated by the attached macro issues a lot of warnings.

root [0] .x test.C
Warning in TGraphDelaunay::Interpolate: Two of these three points are coincident 239 488 477
Warning in TGraphDelaunay::Interpolate: Two of these three points are coincident 239 488 478
Warning in TGraphDelaunay::Interpolate: Two of these three points are coincident 239 488 479
Warning in TGraphDelaunay::Interpolate: Two of these three points are coincident 239 488 480
Warning in TGraphDelaunay::Interpolate: Two of these three points are coincident 239 488 481
Warning in TGraphDelaunay::Interpolate: Two of these three points are coincident 239 488 482
Warning in TGraphDelaunay::Interpolate: Two of these three points are coincident 239 488 483
…

How can I avoid this?

Thank you in advance.
test.C (22.2 KB)

[couet]

The message telle you the answer.
You have points with the same X and Y values.