Hi Guillaume,
I cannot reproduce this problem. See result in the attachement.
When communicating to roottalk, please indicate which version
of ROOT that you are using.
Rene Brun
On Wed, 9 Oct 2002, Guillaume Blanc wrote:
> Hi,
>
> Here a piece of code which reproduce exactly le problem I have on
> secondary axis labels :
>
> {
> TCanvas *c2 = new TCanvas("c2","");
>
> hpx = new TH2F("hpx","toto",10,0,10,10,0,1);
> hpx->SetStats(kFALSE);
> hpx->Draw();
>
> c2->Update();
> TF1 *magax0 = new TF1("magax0","0.62*x",0,gPad->GetUxmax()*0.62);
> TGaxis *axe0 = new TGaxis(gPad->GetUxmin(), gPad->GetUymax(),
> gPad->GetUxmax(),
> gPad->GetUymax(),"magax0" ,510,"-");
>
> axe0->Draw();
> }
>
> Labels are not in front of major ticks...
>
> Guillaume Blanc
>
>
> On Sat, 5 Oct 2002, Rene Brun wrote:
>
> > 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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