How to catch Fit results manually

Hi rooters,

I am fitting a Gaussian on TH1D and I see following values of Mean & Sigma in my terminal:

 FCN=86.9094 FROM MIGRAD    STATUS=CONVERGED      63 CALLS          64 TOTAL
                     EDM=2.49833e-09    STRATEGY= 1      ERROR MATRIX
ACCURATE
  EXT PARAMETER                                   STEP         FIRST
  NO.   NAME      VALUE            ERROR          SIZE      DERIVATIVE
   1  Constant     5.98744e+03   4.61314e+01   1.65706e-01  -1.72560e-06
   2  Mean         9.20998e+01   1.10379e-01   5.04750e-04  -4.60640e-05
   3  Sigma        1.82326e+01   8.71316e-02   5.68693e-06  -5.16419e-02


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I can see Mean & Sigma from here but how can get them manually. Actually, i want to print them in the title of my Histogram. I will convert the value into TString then i will put it in the title but how I can get these values, I mean

cout<<"Mean Value= "<<????<<<" with Error ="<<????<<endl; cout<<"Sigma Value= "<<????<<" with Error ="<<????<<endl;

should output following:

Mean Value= 9.20998e+01 with Error =4.61314e+01 Sigma Value= 1.82326e+01 with Error =8.71316e-02

But how ?

Thanks for help.

Cheers, Asif Received on Thu Mar 01 2012 - 00:44:53 CET