Hist->Fit("gaus") clears pad (5.19.02)

ROOT
#1

Hi rooters,
I do:

TFile *f=new TFile(“hsimple.root”);
hpx->Draw();
TLine *l = new TLine (-3, 100, 2, 600);
l->Draw(); // ok the line appears
hpx->Fit(“gaus”); // the line disappears

Is it possible to avoid disappearing existing primitives when the
fit function is drawn?

Cheers
Otto :

#2

Hi Otto,

TFile *f = new TFile("hsimple.root"); hpx->Draw(); TLine *l = new TLine (-3, 100, 2, 600); l->Draw(); hpx->GetListOfFunctions()->Add(l); hpx->Fit("gaus");

TFile *f = new TFile("hsimple.root"); hpx->Draw(); TLine *l = new TLine (-3, 100, 2, 600); l->Draw(); hpx->Fit("gaus", "", "same");Jan

#3

Hi Jan,
thanks for your answer.
In the simple case I posted this can be done,
however if one adds elements with the graphics editor that doesnt
help.
Cheers
Otto

#4

[quote]however if one adds elements with the graphics editor that doesnt
help.[/quote]in this case use second method: hpx->Fit(“gaus”, “”, “same”);

Jan

#5

Hi Jan,
thanks, that helps
Otto