Draw TF2/TH2/TGraph2D for a specific Z value

ROOT
1

Hi

I’ve a problem with a TGraph2D : I 've fitted it with a TF2

fit=TF2("myfit","[0]+[1]*y+[2]*y*y+[3]*x+[4]*x*x+[5]*x*y",-60,60,-60,60)

and now i want to plot this function but only for one Z value (so the intersection of this function and the Z-plan Z=210)

is there a way to this easely ?
cheers
jb

2

May be draw a 3d marker at this (x,y,z) position ?

3

Use TF2::SetContour or SetContourLevel

Rene