No sorry, in fact all histograms are superimposed in the same
pad. Sounds like the canvas had never been divided.
T.
On Tue, 7 Jan 2003, Vu Anh Tuan wrote:
> Hi,
>
> It's formidable to begin a new year with this bug, but it's still a bug
> for me and I need your help to root it out.
>
> In short, I want to make small macro with a list of histograms (say 4),
> create a canvas with the same number (4 then) of subpads and draw each
> histogram into a subpad (1st histo in 1st subpad, 2nd histo in 2nd
> pad, so on..). Actually it's supposed to do more than that, but I
> describe here only the necessary things.
>
> Here is the main relevant lines:
>
> void fillCanvas(const TString &canvasName,
> const TString *inputHistos, const int &numberOfHistos)
> {
> const int maxNumber = 10;
>
> TH1F *histo[maxNumber]; // numberOfHistos is about 4 in reality
>
> TCanvas c1;
>
> if (numberOfHistos == 2)
> c1.Divide(2,1);
> if (numberOfHistos == 3)
> c1.Divide(2,2);
> if (numberOfHistos == 4)
> c1.Divide(2.2);
>
> for (int hidx = 0; hidx < numberOfHistos; hidx++)
> {
> // Read some root file and take the histogram out one by one
>
> c1.cd(hidx);
> // Then set color to each histo
> // and draw
> histo[hidx]->Draw();
> }//end of loop over histos
>
> c1.Print(canvasName);
> c1.Close();
> }//end of function fillCanvas
>
> It doesn't work well since the final gif file contains only on undivided
> image, and only the last histogram is printed, no trace of the previous
> one.
>
> So where's the bug?
>
> Thanks and Happy New Year anyhow,
>
> Tuan
>
>
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