Increase division of colour bar in TGraph2D SOLVED

[anushree]

Hii ROOTers,
I am trying to plot contours/oscillogram using TGraph2D. I have attached the data file. In the file there are three columns : x,y,z. I have plotted contours in xy plane for different values of z. The code is following:

Code: Select all

       TGraph2D *gr = new TGraph2D();
   double prob_calc_diff,E,cos;
   ifstream file1;
   file1.open("prob_2d.dat");
   int a=0;
   for(int i=0;i<100;i++)
   {
      for(int j=0;j<100;j++)
      {
         file1>>cos>>E>>prob_calc_diff;
         gr->SetPoint(a,cos,E,prob_calc_diff);
         a++;
      }
   }
   //gStyle->SetPalette(1);
      gr->Draw("cont4z");


The questions are:
1) How can I increase the divisions in the colour bar?
2) In the manual it is written that " This software cannot be guaranteed to work
under all circumstances. It was originally written to work with a few hundred points in an XY space with similar X and Y ranges."
In this case, since the x range(-1 to 0) and y range(1 to 10) are not same, is there any possibility of getting wrong result?

Thanks in advance ..

[couet]

2) In the manual it is written that " This software cannot be guaranteed to work
under all circumstances. It was originally written to work with a few hundred points in an XY space with similar X and Y ranges."
In this case, since the x range(-1 to 0) and y range(1 to 10) are not same, is there any possibility of getting wrong result?

should be fine...

[couet]

1) How can I increase the divisions in the colour bar?

see:

http://root.cern.ch/drupal/content/how- ... or-palette

[anushree]

Thanks a lot !