Salut Sabine,
En/Na Sabine Crepe-Renaudin ha escrit:
> I have some problem to update canvas, I've tried the following commands :
>
> TFile f("myfile.root");
> TTree *myt = Mytree;
> TCanvas *myc = new TCanvas("myc","myc_titre",0,0,400,600);
>
> myc->Divide(1,2);
> myc_1->cd();
> myt->Draw("var1");
> myc->cd(2);
> myt->Draw("var2");
>
> Here everything works fine ... then
>
> myc->Divide(2,2);
> myc->cd(1);
> myt->Draw("var3");
> myc->cd(2);
> myt->Draw("var4");
> ...
>
> Here my canvas is never updated ... I've tried myc->Update(); and
> myc->Modified(); in different places but it does not change the result.
>
> Do I have to create again a new canvas before the second Divide ? Is there
> something wrong in the few lines above ?
just add:
myc->Clear();
before the second Divide
> PS. Is there an equivalent to the "wait" we can use in PAW macros between
> the drawing of 2 histos ?
yes: getchar();
Ciao !
--
David D'ENTERRIA - Marie-Curie PostDoc Fellow - TAPS·PHENIX·ALICE
Groupe Photons SUBATECH tel: +33 2 51 85 85 60
4, A. Kastler BP 20722 · 44307 Nantes fax: +33 2 51 85 84 24
http://www-subatech.in2p3.fr/~photons mailto:enterria@in2p3.fr
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