Gaxis

Simple example illustrating how to draw TGaxis objects in various formats.

Author: Rene Brun
This notebook tutorial was automatically generated with ROOTBOOK-izer from the macro found in the ROOT repository on Sunday, July 05, 2020 at 07:31 AM.

In [1]:
TCanvas *c1 = new TCanvas("c1","Examples of TGaxis",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->SetTitle("axis3");
axis3->SetTitleOffset(0.5);
axis3->Draw();

TGaxis *axis4 = new TGaxis(-7,-0.8,-7,0.8,1,10000,50510,"G");
axis4->SetName("axis4");
axis4->SetTitle("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->Draw();

TGaxis *axis6 = new TGaxis(-4.5,0.5,5.5,0.5,100,900,50510,"-");
axis6->SetName("axis6");
axis6->Draw();
TGaxis *axis6a = new TGaxis(-5.5,0.85,5.5,0.85,0,4.3e-6,510,"");
axis6a->SetName("axis6a");
axis6a->Draw();

TGaxis *axis7 = new TGaxis(8,-0.8,8,0.8,0,9000,50510,"+L");
axis7->SetName("axis7");
axis7->Draw();

One can make axis going top->bottom. however because of a long standing problem, the two x values should not be equal

In [2]:
TGaxis *axis8 = new TGaxis(6.5,0.8,6.499,-0.8,0,90,50510,"-");
axis8->SetName("axis8");
axis8->Draw();

Draw all canvases

In [3]:
gROOT->GetListOfCanvases()->Draw()