Adding page numbers to .ps output

ROOT
1

Hi ROOT team,

I was wondering if it is possible to add page numbers to a .ps file I generate in ROOT?
Skeletized code is as such:

{
TFile f(“histo4.root”,“READ”);

c1 = new TCanvas(“c1”,“sub data”,200,10,700,500);

callanstime1->Draw();c1->Print(“histo4.ps(”,“ps”); c1.Clear();
rzb_tot->Draw("");c1->Print(“histo4.ps(”,“ps”); c1.Clear();
c1->Print(“histo4.ps)”,“ps”); c1.Clear();
}

thanks!
Ken

2

here is a way

{
        // Number on pages
        char c[10]; int n = 1;

        TCanvas* canvas = new TCanvas("canvas", "canvas", 600, 500);
        TPostScript *ps = new TPostScript("plots.ps",112);

        TH1F* histo = new TH1F("histo","test 1",10,0.,10.);

        TLatex l; l.SetTextSize(0.03); l.SetTextAlign(22);

        histo->Fill(2.);
        histo->Draw();
        sprintf(c,"- %d -",n++); l.DrawLatex(5, -0.1, c);      
        canvas->Update();
        ps->NewPage();

        histo->Fill(4.);
        histo->Draw();
        sprintf(c,"- %d -",n++); l.DrawLatex(5, -0.1, c);
        canvas->Update();
        ps->NewPage();
   
        histo->Fill(6.);
        sprintf(c,"- %d -",n++); l.DrawLatex(5, -0.1, c);
        canvas->Update();
        ps->NewPage();
   
        histo->Fill(8.);
        histo->Draw();
        sprintf(c,"- %d -",n++); l.DrawLatex(5, -0.1, c);
        canvas->Update();
   
        ps->Close();
}
3

Hi, thanks!

I was trying to extend your example one way further. It seems in the
l.DrawLatex(5, -0.1, c);

line, you have to specify the coordinates manually based on the coordinates of the histogram.

Is there a way to do it globally? I tried:

    histo->Fill(2.);
    histo->Draw();
    sprintf(c,"- %d -",n++); l.PaintLatex(.5 , .5, 0., .1, c);     
    canvas->Update();
    ps->NewPage();

but for reasons unknown it draws the number and then erases it
and overdraws the plot.

thanks
Ken

4

Better to do it that way:

{
        // Number on pages
        char c[10]; int n = 1;

        TCanvas* canvas = new TCanvas("canvas", "canvas", 600, 500);
        TPostScript *ps = new TPostScript("plots.ps",112);

        TH1F* histo = new TH1F("histo","test 1",10,0.,10.);

        TText l; l.SetTextSize(0.03); l.SetTextAlign(22);

        histo->Fill(2.);
        histo->Draw();
        sprintf(c,"- %d -",n++); l.DrawTextNDC(.5, 0.03, c); 
        canvas->Update();
        ps->NewPage();

        histo->Fill(4.);
        histo->Draw();
        sprintf(c,"- %d -",n++); l.DrawTextNDC(.5, 0.03, c);
        canvas->Update();
        ps->NewPage();

        histo->Fill(6.);
        sprintf(c,"- %d -",n++); l.DrawTextNDC(.5, 0.03, c);
        canvas->Update();
        ps->NewPage();

        histo->Fill(8.);
        histo->Draw();
        canvas->cd();
        sprintf(c,"- %d -",n++); l.DrawTextNDC(.5, 0.03, c);
        canvas->Update();

        ps->Close();
}
5

thanks