|Message: problems adding TH1F histogram to the persistency example||Not Logged In (login)|
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Hello, I am trying to create a 1D histogram in the persistency example (Geant-4.8.2 / root_v5.14.00b / clhep-188.8.131.52) adding a simple line TH1F* h1 = new TH1F("hist1","CalHit",100,0,100.); to the "readHits.cc" class. But when I try to create an executable I have the error : undefined reference to `TH1F::TH1F(char const*, char const*, int, double, double)' collect2: ld returned 1 exit status make: *** [dictionary] Error 1 I have added #include TH1F.h in readHits.cc but it does not help. Note that for example the creation of a new file via: TFile* hf = new TFile("Histo.root", "RECREATE"); works fine. With older versions of the persistency example (up to Geant 4.8.0.p01) it was always possible to add histrograms, but now the example was rewritten (and the makefile changed a lot) and I am not able anymore to obtain plots. Could someone help me? thanks, regards Marco Serra
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