I have a workspace containing a RooDataSet, and I would like to get a TH1F from it. If I do the following in the interpreter, everything works:
root  w->data("data_obs")->createHistogram( "name", *w->var("xVar") ) (class TH1 *) 0x38727b0
However if I try to do practically the same thing in python I get the following error:
>>> w.data('data_obs').createHistogram('name', w.var('xVar') ) Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: none of the 2 overloaded methods succeeded. Full details: TH2F* RooDataSet::createHistogram(const RooAbsRealLValue& var1, const RooAbsRealLValue& var2, const char* cuts = """", const char* name = ""hist"") => could not convert argument 1 TH2F* RooDataSet::createHistogram(const RooAbsRealLValue& var1, const RooAbsRealLValue& var2, int nx, int ny, const char* cuts = """", const char* name = ""hist"") => takes at least 4 arguments (2 given)
Only the TH2F constructors from RooDataSet are available (https://root.cern.ch/doc/master/classRooDataSet.html), but I would like to use the TH1F constructors that are inherited from RooAbsData (https://root.cern.ch/doc/master/classRooAbsData.html). In the interpreter this doesn’t seem to be an issue.
Is there any trick to access the TH1F constructors, ignoring the TH2F constructors from RooDataSet?