Hi All,
I need to plot some histograms from a ROOT File, to do so I use a function
as follows:
void DispBar(int plane,int bar)
{
c1=new TCanvas();
TFile BF("/home/rshneor/bbtreefile.root");
TTree *BT=(TTree *)BF.Get("bbtree");
if (plane==0) {
printf("AUX Plane Bar: %i\n",bar);
} else if (plane==1) {
printf("DE Plane Bar: %i\n",bar);
} else if (plane==2) {
sprintf(dummy,"E Plane Channel %i TDC Left",bar);
TH1F tdcl("tdcl",dummy,100,0,2000);
sprintf(dummy,"E Plane Channel %i TDC Right",bar);
TH1F tdcr("tdcr",dummy,100,0,2000);
sprintf(dummy,"E Plane Channel %i ADC Left",bar);
TH1F adcl("adcl",dummy,100,0,2000);
sprintf(dummy,"E Plane Channel %i ADC Right",bar);
TH1F adcr("adcr",dummy,100,0,100);
c1->Divide(2,2);
sprintf(dummy,"BB.tp.e.lt.data[%i]>>tdcl",bar-1);
sprintf(dummy1,"BB.tp.e.lt.data[%i]>0",bar-1);
c1->cd(1);
BT->Draw(dummy,dummy1);
c1->cd(2);
sprintf(dummy,"BB.tp.e.rt.data[%i]>>tdcr",bar-1);
BT->Draw(dummy);
c1->cd(3);
sprintf(dummy,"BB.tp.e.la.data[%i]>>adcl",bar-1);
BT->Draw(dummy);
c1->cd(4);
sprintf(dummy,"BB.tp.e.ra.data[%i]>>adcr",bar-1);
printf(dummy);
BT->Draw(dummy);
}
}
The problem is that I get blank pads in the canvas... When I try to plot
from the tree without the redirection to the histograms everything works
fine, however, when I try the same code (with the redirection) in the
interpreter it also works fine.
Any help you can offer would be greatly appreciated.
Thanks,
Guy Ron
Tel Aviv University
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