I want to fit an user function to a profile histogram:
[first part of the macro is sniped]
h1->Draw("sm2:p>>smprof","side==1","profs");
TF1 *fun2 = new TF1("fun2","[0]+[1]*pow(x,2)",3,10,2);
fun2->SetParName(0,"const");
fun2->SetParName(1,"sigma_b");
fun2->SetParameter(0,0.03);
fun2->SetParameter(1,0.003);
smprof->Fit("fun2");
[the rest also]
I'm doing this in a macro, but all I get is a 'segmentation violation'.
If i comment out the fit part it is working and making the histogram,
but with it I get the error every time. I tried different names and
functions but it's still the same. I'm running root version 1.01/07 on a
Sparc 20.
I hope anyone can help.
Greetings Torsten
-- //////////////////////////////////////////////////////////////////// / Torsten Henkel Fachbereich Physik / / AG Schwerionenphysik Philipps-Universitaet Marburg / / Renthof 5 Telephon: +49-6421-284128 / / 35032 Marburg Fax: +49-6421-288993 / ////////////////////////////////////////////////////////////////////