Filling histos in directory + if(==) problem

Tadeusz Pytlos (pytlos@fizwe5.fic.uni.lodz.pl)
Sun, 24 May 1998 15:25:31 +0200 (CEST)

Dear Rooters,
I'm working on RedHat5 with ROOT 2.00/07.
Last time I decided to start using directories of histograms according
to Rene Brun's example dirs.C. Unfortunetly, I found very strange
behaviour which I cannot solve and it is difficult to explain.
Simply speaking without directories such condition works properly
if((xne[2]>4.4) && (xne[2]<4.5) && (m==12)) h2->Fill(k);
but with directories doesn't. It produces error
root [0]
Processing dep0.C...
Error: Can't call TGX11::Fill() in current scope
FILE:/home/pytlos/usr/kret/test/./dep0.C LINE:264
*** Interpreter error recovered ***

I tried to investigate the problem a lot in my macro, but
it seems to be a very soft kind of interpreter error.

{
.....

Int_t m,k,count,hist[58];
const Int_t nplanes=1;
const Int_t ncounters=10;
char dirname[50];
char hname[20];
char htitle[80];

........// Preparing directories structure
TFile *hfile = gROOT->FindObject("dep.root");
if(hfile) hfile->Close();
hfile = new TFile("dep.root","RECREATE","ROOT file");
TDirectory *top=hfile->mkdir("top");
top->cd();

for(Int_t i=0;i<nplanes;i++)
{
sprintf(dirname,"plane%d",i);
TDirectory *plane=top->mkdir(dirname);
plane->cd();
for(Int_t j=0;j<ncounters;j++)
{
sprintf(hname,"h%d",j);
sprintf(htitle,"Histogram dla m=%d",j);
TH1S *h = new TH1S(hname,htitle,40,0,40);
}
top->cd();
}

..........
.................//Filling directories

top->cd();
plane0->cd();
if((xne[2]>4.4) && (xne[2]<4.5)) h0->Fill(m);
if((xne[2]>4.4) && (xne[2]<4.5) && (m!=12)) h1->Fill(k);
//bad if((xne[2]>4.4) && (xne[2]<4.5) && (m==12)) h2->Fill(k);
if((xne[2]>4.4) && (xne[2]<4.5) && (m==12)) hist[count++]=k;
}
for(Int_t i=0;i<58;i++) h3->Fill(hist[i]);
........

I cannot fulfill only h2 histogram with (m==2). h2 is good if I don't
include (m==something) or I don't insert h2->Fill(k).
Nevertheless, it was easy to check that condition
if((xne[2]>4.4) && (xne[2]<4.5) && (m==12)) h2->Fill(k);
has 58 events and I histogram them in h3.
My program is rather complicated and data file is big, but
I can send them if you need to investigate.
Best wishes,
Tadeusz

--
Tadeusz Pytlos        
mailto:pytlos@fizwe5.fic.uni.lodz.pl 
Lodz, Poland