Hi Ray,
I already answered a similar question this afternoon.
In your case, you can do something like:
// choose xmin,xmax,ymin,ymax at your convenience.
//here, I show xmin=0, xmax=nx, etc.
TH2F *h2 = new TH2F("h2","some title",nx,0,nx,ny,0,ny);
for (int i=0;i<nx;i++) {
for (int j=0;j<ny;j++) {
h2->Fill(x[i],y[i],z[i][j]);
}
}
h2->Draw("surf"); //look at $ROOTSYS/tutorials/draw2dopt.C for examples
Rene Brun
On Thu, 21 Dec 2000, Ray Fliller III wrote:
>
>
> Hello Rooters,
>
> Given 2 arrays X and Y and a 2D array Z where Z[i][j]=Z(X[i],Y[j]),
> how do I make a graph of this?? There is no TGraph2D, perhaps this could
> be an added class....
>
> Ray
>
> ==============================================================================
> Ray Fliller: rfliller@bnl.gov Office Phone: (631)-344-6124
> C-A Accelerator Physics
> Building 911
> Brookhaven National Lab
> Upton, NY 11973 Office: Room 211
> ==============================================================================
>
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