Hi Aihong,
This problem is due to a change in CINT in the member function overload
resolution in version 2.24. I hope this can be changed by Masa before
we release this version. Meanwhile, you can work around this problem
in the way indicated in your original code below.
Rene Brun
Aihong Tang wrote:
>
> Hi,
>
> I have a drawSurf3.cxx which is copied from roottalk digest,
> I assume it should work in both session:
>
> First interactive session
> =========================
> Root > .L drawSurf.cxx
> Root > drawSurf()
>
> Second interactive session
> ==========================
> Root > .L drawSurf.cxx++
> Root > .drawSurf()
>
> The Second one works, but the first session gives the following message:
>
> root4star [0] .L drawSurf.cxx
> root4star [1] drawSurf()
> Error: Ambiguous overload resolution (10400,2) FILE:drawSurf.cxx LINE:19
> Calling : TF2::TF2(char*,char*,int,int,int,int,int);
> Match rank: file line signature
> ffffffff (compiled) 0 TF2 TF2::TF2(const TF2&);
> * 10400 (compiled) 0 TF2 TF2::TF2(const char*,Double_t (*)(Double_t*,
> Double_t*),Float_t,Float_t,Float_t,Float_t,Int_t);
> * 10400 (compiled) 0 TF2 TF2::TF2(const
> char*,void*,Float_t,Float_t,Float_t,Float_t,Int_t);
> ffffffff (compiled) 0 TF2 TF2::TF2(const char*,const
> char*,Float_t,Float_t,Float_t,Float_t);
> ffffffff (compiled) 0 TF2 TF2::TF2();
> *** Interpreter error recovered ***
>
> The file drawSurf.cxx
> =====================
> #include "TF2.h"
>
> Double_t gausxy( Double_t* x, Double_t* par ) {
>
> Double_t dxds= (x[0]-par[0])/par[2];
> Double_t dyds= (x[1]-par[1])/par[3];
> Double_t rho= par[4];
> return exp( -0.5*( dxds*dxds + dyds*dyds
> - 2.0*dxds*dyds*rho )/( 1.0-rho*rho) );
>
> }
>
> void drawSurf(){
>
#ifdef __CINT__
TF2* f2= new TF2( "myfunc2", (void*)gausxy, -10, 10, -10, 10, 5 );
#else
TF2* f2= new TF2( "myfunc2", gausxy, -10, 10, -10, 10, 5 );
#endif
> f2->SetParameter( 0, 0.0 );
> f2->SetParameter( 1, 0.0 );
> f2->SetParameter( 2, 2.0 );
> f2->SetParameter( 3, 2.0 );
> f2->SetParameter( 4, 0.1 );
> f2->Draw("surf");
>
> }
>
> I am running root 2.24 on Linux.
>
> Thanks!
>
> Aihong
This archive was generated by hypermail 2b29 : Tue Jan 02 2001 - 11:50:24 MET