Is there something like TGraph3D?

Hi,

Is there a way to plot a 4th coordinate as a function of 3 other coordinates with the 4th coordinate as the color of a 3D point? I just found an old discussion here in which there was a solution for a case in which the data are in a TTree. Any alternative?

You can use directly the class TPolyMarker3D. See example at $ROOTSYS/tutorials/graphics/tornado.C

Rene

That seems to be a feasible solution. Thank you!