Ooops, I made a mistake, I should have remembered that this only works if the function has already been drawn... TF2 *ex = new TF2(........); ex->Draw(); ex->GetHistogram()->GetXaxis()->SetTitle("x"); ex->GetHistogram()->GetYaxis()->SetTitle("y"); Then you just need to update the canvas (canvas->Modified() does the job) in which you've drawn the TF2... Apologies for the mistake... Ben. -- ------------------------------------------------------------------------------- Mr. Ben Morgan Tel: 44 (0)114 22 23553 (Work) Postgraduate Student University of Sheffield Department of Physics & Astronomy Hicks Building Hounsfield Road Sheffield S3 7RH -------------------------------------------------------------------------------
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