Dear Rooters Sorry for asking a general C++ question but I have problems to pass a two-dimensional array to a function. In MyMethod() I have created a two-dimensional array: void MyMethod(Int_t ncols, Int_t nrows) { Double_t **table = 0; table = new Double_t*[ncols]; for (Int_t i=0; i<ncols; i++) { table[i] = new Double_t[nrows]; } // fill table with data before calling: DrawTable(nrows, ncols, table, opt); //<==compile error } The function DrawTable() looks as follwos: void DrawTable(Int_t n, Int_t m, Double_t &table, Option_t *opt) // write: Double_t &table or: Double_t **table ??) { Double_t *index = 0; index = new Double_t[n]; for (Int_t i=0; i<n; i++) index[i] = i; TGraph *graph = 0; for (Int_t i=0; i<m; i++) { graph = new TGraph(n, index, table[i], opt); //<==compile error graph->Draw(opt); SafeDelete(graph); } delete [] index; } How do I have to pass the variable table to get the code to compile correctly? Please note that I know that I could use TMatrix (or TTable) to create my table, but I would like to know how to write the code correctly in this way. Thank you in advance for your help. Best regards Christian _._._._._._._._._._._._._._._._ C.h.i.s.t.i.a.n S.t.r.a.t.o.w.a V.i.e.n.n.a A.u.s.t.r.i.a _._._._._._._._._._._._._._._._
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