Chris Green wrote: > > I'm trying to write to a .root file by calling the same routine several > tims. I wish to write histograms to the same file with different names to > avoid overwriting. Can you tell me what's wrong with this? > > char stanb[12] = " (all tanb)"; > char ht1[30] = "minevt_tot"; > char ht2[30] = "minevt_rr"; > char ht3[30]= "lim_tot"; > char ht4[30] = "lim_rr"; > char ht5[30]= "lim_tot172"; > char ht6[30]= "lim_rr172"; > > if (tbval) sprintf(stanb," (tanb = %f)",tbval); > strcat(stanb,ht1); > strcat(stanb,ht2); > strcat(stanb,ht3); > strcat(stanb,ht4); <========================================== > strcat(stanb,ht5); > strcat(stanb,ht6); > I suppose you want to do the inverse: strcat(ht1,stanb); Rene Brun > TH2F *minevt_tot = new TH2F(ht1,"Minimum expected events (left+right)", > 71,19.5,90.5,71,19.5,90.5); > TH2F *minevt_rr = new TH2F(ht2,"Minimum expected events (right only)", > 71,19.5,90.5,71,19.5,90.5); > TH2F *lim_tot = new TH2F(ht3,"Excluded region(left+right)", > 71,19.5,90.5,71,19.5,90.5); > TH2F *lim_rr = new TH2F(ht4,"Excluded region (right only)", > 71,19.5,90.5,71,19.5,90.5); > TH2F *lim_tot172 = new TH2F(ht5,"Excluded region(left+right) at 172 GeV", > 71,19.5,90.5,71,19.5,90.5); > TH2F *lim_rr172 = new TH2F(ht6,"Excluded region (right only) at 172 GeV", > 71,19.5,90.5,71,19.5,90.5); > > (filling blurb) .. > > TFile *combout = new TFile("combout.root","UPDATE"); > > if ( ! combout->IsOpen() ) { > printf("File does not appear to exist. Trying to create ...\n"); > TFile *combout = new TFile("combout.root","NEW"); > if ( ! combout->IsOpen() ) { > printf("Still unable to open output file. Exiting with problems.\n"); > exit(127); > } else { printf("File opened successfully.\n"); } > } > minevt_tot->Write(ht1); > minevt_rr->Write(ht2); > lim_tot->Write(ht3); > lim_rr->Write(ht4); > lim_tot172->Write(ht5); > lim_rr172->Write(ht6); > > combout->Close(); > > When I open the file in ROOT, however, all I get is updated cycles of the > same histogram (haven't had chance to try the same thing with 1.0beta > yet). Help? > > Thanks, > Chris. > > --- > Chris Green. HEP, University of Liverpool > MAIL Chris.Green@cern.ch, WWW http://hep.ph.liv.ac.uk/~chris/ > +41 22 767 8075. On LTA at CERN. > --- > "Woof. In tones of low menace." -- Gaspode the wonder dog (Terry Pratchett, Moving Pictures)
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