Hi Marco, I have modified the logic to draw your last histogram. Up to you to apply similar changes to the other histograms. See examples in the TGaxis constructor accepting a TF1*. //*************************// h2.GetXaxis()->SetTitle("l"); h2.GetYaxis()->SetTitle("b"); h3.GetXaxis()->SetTitle("l"); h3.GetYaxis()->SetTitle("b"); xmin = h3->GetXaxis()->GetXmin(); xmax = h3->GetXaxis()->GetXmax(); ymin = h3->GetYaxis()->GetXmin(); h3->GetXaxis()->SetLabelColor(0); h3->GetXaxis()->SetTickLength(1e-6); TF1 *f_1= new TF1("f_1","-x",-xmax,-xmin); TGaxis *xnew= new TGaxis(xmin,ymin,xmax,ymin,"f_1",510); Rene Brun On Fri, 6 Jun 2003, Marco Ajello wrote: > Dear all, > I have a problem with TGaxis. > Find attached the root file + data, > to try: > launch >.x w28bk.C > -write at the first question: p.dat (<--the name of data file) > and then enter, > at the other question give a letter (like "t") and enter. > You will see an histo 2D. The axis I would like to have is > the original changed of sign. > I.Eg.: the original goes from -9.5->-3.5 > I need from 9.5->3.5 > I do know why this macro run with some data and not with these one. > Can you help me? > Regards, > Marco > >
This archive was generated by hypermail 2b29 : Thu Jan 01 2004 - 17:50:12 MET