Hi Yves,
The histograms generated by TH3::FitSlices are in the current
directory. To access them, you should do, eg
TH2D * HParticleRapidityPtPhi_0 = (TH2D*)file->Get("HParticleRapidityPtPhi_0");
I will make this point more precise in the documentation.
Rene Brun
;Yves SCHUTZ wrote:
>
I have the following macro where I do a FitSlices
to a 3D histogram and I plot the fitting parameter
stored in a 2D histogram. The macro works fine
with the interpreter.
However when I compile (.L macro.C++), obviously I
get the error that : `HParticleRapidityPtPhi_0'
undeclared (first use this function).
I then uncomment the line :TH2 *
HParticleRapidityPtPhi_0 ; Obviously again the
compilation works fine but at running time the
pointer HParticleRapidityPtPhi_0 remains = 0 !
What is the trick ?
Thanks ... Yves
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