Hello rooters,
I am using THStack class to draw some histograms in the same pad
and I found I could not zoom in/out along y-axis but could do
along x-axis. Following macro is a part of my macro.
Something wrong ?
:
:
TCanvas *c = new TCanvas("c", "", 10, 10, 550, 750);
c->Divide(2, 3);
THStack *hstack_laxis[6];
Char_t hstackname[20];
for ( Int_t i = 0; i < 6; i++ ) {
sprintf(hstackname, "hstack_laxis %d", i);
hstack_laxis[i] = new THStack(hstackname, "");
c->cd(i+1);
gPad->SetLogx();
hlaxis[0][i]->Sumw2(); hlaxis[1][i]->Sumw2();
hlaxis[0][i]->Scale(1.0/nentries[0]); hlaxis[1][i]->Scale(1.0/nentries[1]);
hlaxis[0][i]->SetLineColor(2); hlaxis[1][i]->SetLineColor(4);
hstack_laxis[i]->Add(hlaxis[0][i]); hstack_laxis[i]->Add(hlaxis[1][i]);
hstack_laxis[i]->Draw("nostack a ehist");
gPad->Modified();
}
:
:
(hlaxis[2][6] are decleared and filled before this routine.)
I also checked hstack.C in $ROOTSYS/tutrials as well as my macro.
But, I could not get the zooming action along y-axis.
What method can I use for zoomig action when use THStack class.
I use ROOT v 3.03/04 on IRIX 6.5 and g++ 2.95.2.
Harufumi Tsuchiya.
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