Hi Kevin,
You may get some inspiration from the example below. I strongly suggest
you go through the Root tutorials where several examples of this kind
are given.
Rene Brun
{
gROOT->Reset();
TCanvas *c1 = new TCanvas("c1","begin with pads", 700, 550);
//by default, pad range is in [0,1]
TLatex *tInfo = new TLatex();
tInfo->DrawLatex(.5, .95, "Info");
TPad pMain ("pmain", "main pad", 0,0,1,.90);
pMain->Draw();
pMain->cd();
pMain->Divide(2,2);
pMain->cd(1);
TH1F *h1 = new TH1F("h1","random",100,-4,4);
h1->FillRandom("gaus",1000);
h1->SetStats(0);
h1->Draw();
TLatex *t1 = new TLatex();
t1->SetNDC(); //we want to draw this object in the Normalized system
[0,1]
t1->DrawLatex(.01, .01, "text in question");
//create a pave with some annotations
TPaveText *pave = new TPaveText(.6,.7,.95,.95,"brNDC");
pave->SetTextAlign(12);
TText *text = pave->AddText("histo info");
text->SetTextFont(72);
text->SetTextAlign(22);
char temp[20];
sprintf(temp,"mean= %g",h1->GetMean());
pave->AddText(temp);
sprintf(temp,"rms = %g",h1->GetRMS());
pave->AddText(temp);
pave->Draw();
}
On Fri, 7 Jul 2000, Kevin M. Rhodes wrote:
> Hello all.
>
> I've been working on a macro to do a crude visual analysis of sets of
> histograms, and I've finally found myself to be stuck. The problem
> consists mostly of formatting the layout of my histograms, so perhaps this
> seems trivial. Here's a snippet, with problem in tow:
>
> TCanvas *canvas = new TCanvas(var1, var2, 700, 550);
> TLatex *tInfo = new TLatex();
> tInfo->DrawLatex(.5, .95, "Info");
> TPad pMain ("pmain", "main pad", 0,0,1,.90);
> pMain->Draw();
> pMain->cd();
> pMain->Divide(2,2);
> pMain->cd(1);
> TH1F *h1 = (TH1F*)f1->Get(var3);
> h1->Draw();
> h1->Fit("myfunction");
> TLatex *t1 = new TLatex();
> t1->DrawLatex(.01, .95, "text in question");
>
> Now, I want the t1 TLatex to position itself between the top of the
> histogram and the top of the pad. However, no matter what values I give
> to DrawLatex, it puts the text in the bottom left corner of the histogram
> (mind you, not in the bottom left corner of the pad). I thought that
> maybe pads within pads, or histograms and Latex don't get along, or a
> number of other unmentionable things. Also, I know that this can be
> done via mouse and editor, but I need to automate this for several
> hundred files. Any ideas?
>
>
> Even if there is a way to do that, what I'd really like to do is put my
> three lines of text (which are in t1) into the TPaveStats pave. So, is
> there any way to add those lines to the pave? Can I delete the
> TPaveStats pave, create a new pave, and pass in my text along with, say,
> Mean and RMS?
>
> Any help, as always, is most appreciated.
>
> Kevin Rhodes
> UW-Madison
> AMANDA group
>
>
>
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