Re: [ROOT] saving a graph into a root file

From: Luis March Ruiz (march@ific.uv.es)
Date: Thu Jun 10 2004 - 19:35:20 MEST 

  Hi Rene,

  maybe it's better if you can have a look at it here:

http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/SOFT_VALID/KitValidation/macro_2.html

  here it's the macro.

  Some graphs and histograms have been saved into a root file, I plot 
them (both, graphs and histos) with the same Draw options, but when I open 
the root file the graphs are plotted with different options (histos are 
OK).

  What am I doing wrong ?

  Thanks.

  Best regards,

                                                      Luis  

> It is diffiucult to understand what you mean. I see no statement writing
> to a ROOT file.
> Please send the shorted possible running script showing your problem.
> 
> Rene Brun
> 
> On 
> Thu, 10 Jun 2004, Luis March Ruiz wrote:
> 
> > 
> >   Hi rooters,
> > 
> >   I have created a few graphs that they have been saved into a root file :
> > 
> >   for example,
> > 
> >      c1 = new TCanvas("c1","Graph Example",200,10,700,500);
> >      gr = new TGraph(n_bin,bin_x,bins_comp);
> >      gr -> SetTitle("(difference between test and norm ref histos)/sigma");
> >      gr -> SetMarkerStyle(21);
> >      gr -> SetMarkerColor(3);
> >      gr -> SetLineColor(3);
> >      gr -> SetMarkerSize(0.5);
> >      gr -> Draw("AP");
> >      line_1 = new TLine(range_start,0.0,range_end,0.0);
> >      line_1 -> SetLineWidth(0.5);
> >      line_1 -> SetLineStyle(3);
> >      line_1 -> Draw();
> >      //c1 -> SaveAs("diff_histos.ps");
> >      c1 -> Update();
> >      //c1 -> Modified();
> > 
> >   
> >   The problem is when I open the root file ... the graph has been saved 
> > with other Draw() options ... the graph is plotted with a line between 
> > dots, as the option Draw("ALP") ... I don't understand it, histograms have 
> > been saved as well, but they have the Draw() options that I selected, 
> > Draw("AP").
> > 
> >   I'm working with an old version, is it a problem ?
> >   What am I doing wrong ?
> > 
> >   RedHat Linux 7.3 2.96-112, ROOT Version 3.04/02.
> > 
> >   Thanks.
> > 
> >   Best regards,
> > 
> >                                                      Luis
> > 
> 
>

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