Hi Scott,
In attachment you will find a macro to do the job.
See the comments at the bottom.
Rene Brun
Scott Sampson wrote:
>
> Hi,
>
> Is there a way to have the numbers on a TGaxis go in decreasing order?
> I'm using TGaxis to draw a 2nd y axis on the right side of the histogram.
> I want it to go from 1.0 at the botton to 0.0 at the top.
> Can this be done?
>
> Thanks,
>
> Scott
{
gROOT.Reset();
c1 = new TCanvas("c1","Examples of Gaxis",10,10,700,500);
c1->Range(-10,-1,10,1);
TGaxis *axis1 = new TGaxis(-4.5,-0.2,5.5,-0.2,-6,8,510,"");
axis1->SetName("axis1");
axis1->Draw();
TGaxis *axis2 = new TGaxis(-4.5,0.2,5.5,0.2,0.001,10000,510,"G");
axis2->SetName("axis2");
axis2->Draw();
TGaxis *axis3 = new TGaxis(-9,-0.8,-9,0.8,-8,8,50510,"");
axis3->SetName("axis3");
axis3->Draw();
TGaxis *axis4 = new TGaxis(-7,-0.8,-7,0.8,1,10000,50510,"G");
axis4->SetName("axis4");
axis4->Draw();
TGaxis *axis5 = new TGaxis(-4.5,-0.6,5.5,-0.6,1.2,1.32,80506,"-+");
axis5->SetName("axis5");
axis5->SetLabelSize(0.03);
axis5->SetTextFont(72);
axis5->SetLabelOffset(0.025);
axis5->Draw();
TGaxis *axis6 = new TGaxis(-4.5,0.6,5.5,0.6,100,900,50510,"-");
axis6->SetName("axis6");
axis6->Draw();
TGaxis *axis7 = new TGaxis(8,-0.8,8,0.8,0,9000,50510,"+L");
axis7->SetName("axis7");
axis7->SetLabelOffset(0.01);
axis7->Draw();
//one can make axis going top->bottom. However because of a long standing
//problem, the two x values should not be equal
TGaxis *axis8 = new TGaxis(6.5,0.8,6.499,-0.8,0,90,50510,"-");
axis8->SetName("axis8");
axis8->Draw();
}
This archive was generated by hypermail 2b29 : Tue Jan 04 2000 - 00:43:44 MET