Hi Claus, Did you try TH2F? If you have a grid with equidistant points along x and y, you can create a TH2F and fill it with h2.Fill(x,y,z); then draw it with one of the "surf" options. If your points are not equidistant, you can still use a variable bin size TH2F. We are now developing a new class TGraph3D that will accept a general xy pairs with the corresponding z value. We hope to have this new class ready in the coming weeks. Rene Brun Claus Horn wrote: > > Dear Rooters, > > from a scan in parameter space I have a function z(x,y), > which I would like to plott. (with z-values of 100-400) > Actually I dont wont to use a histogram as I dont wont > scattering. (Or can this be switched off ?) > But TGraph does only work for y(x), or is there a posibility > to have z(x,y) ? > Anyway, if I tryed to use a TH3F histogram, but than the > "surf" draw option which works for TH2F does not seam to work. > Probably there is an easy way which I just dont see. > I would very much apreceate any help. > > Claus Horn
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