Hi Johann, CINT is right to complain (in version 2.21) that it does not know a TGraph constructor with Double_t*. In version 2.23, I implemented a constructor accepting arrays of Double_t. So move to this new version and things will work. Rene Brun Johann Gutauer wrote: > > Hi Rooters, > > I would like to use TGraph::TGraph(Int_t n, Double_t *x, Double_t *y). So I > tried the example 19 (Simple Graph with axis titles). > I changed the line > Float_t x[n], y[n]; > to > Double_t x[n], y[n]; > > But all i got was the following error message: > > Error: Can't call TGraph::TGraph() in current scope > FILE:/export/nccfs7/home/johann/./testgraph.C LINE:21 > Possible canditates are... > filename line:size busy function type and name > (compiled) 0:0 0 public: TGraph TGraph(void); > (compiled) 0:0 0 public: TGraph TGraph(Int_t n,Float_t* x=0,Float_t* > y=0); > (compiled) 0:0 0 public: TGraph TGraph(TGraph&); > Warning: Undeclared symbol gr. Automatic variable allocated > FILE:/export/nccfs7/home/johann/./testgraph.C LINE:21 > *** Interpreter error recovered *** > root [1] > > It looks to me like it is not possible to call the right constructor. > I'm using version 2.21/08 on sparc-sun-solaris2.6 > > Regards, > Johann
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