Hi Guillaume, Please send me a running script reproducing the problem. With the simple test below, I cannot reproduce it: { TCanvas *c1 = new TCanvas(); TF1 *magax = new TF1("magax","0.62*x",0,gPad->GetUxmax()*0.62); magax->Draw(); c1->Update(); TGaxis *axe = new TGaxis(gPad->GetUxmin(), gPad->GetUymax(), gPad->GetUxmax(), gPad->GetUymax(), "magax" ,510,"-"); axe->Draw(); } Rene Brun On Fri, 4 Oct 2002, Guillaume Blanc wrote: > Hello, > > When I plot a secondary X axis on a histogram, using a TF1 formula to get > the ticks positions; it's works quite well, but for the labels, which are > not in front of the major ticks, but between, with a lot of training > decimals. > > Here is the piece of code I use: > > // X axis is linear from 0 to 11. > c1->Update(); > TF1 *magax = new TF1("magax","0.62*x",0,gPad->GetUxmax()*0.62); > TGaxis *axe = new TGaxis(gPad->GetUxmin(), gPad->GetUymax(), > gPad->GetUxmax(), > gPad->GetUymax(), "magax" ,510,"-"); > axe->Draw(); > > The result of this is ticks well positionned, but labels are: > > 0 - 1.1367 - 2.2733 - 3.41 - 4.5467 - 5.6833 - 6.82 > > The last number, 6.82 correponds to gPad->GetUxmax()*0.62. > > Instead of what I would espect: 0 - 1 - 2 - 3 - 4 - 5 - 6 > > Is there a way to ask to TGaxis to put labels on major ticks and not > between them ? > > Thanks for your help. > > Guillaume Blanc >
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