Hi Perfetto,
you are retrieving a pointer from the TFile so
if you wanna get a entry in the TVectorD you
should write :
(*par)(i) which represents your TVectorD whereas
par is the pointer on your TVectorD (this is a C issue)
Writing down xxx() , i.e something with brackets means
that you are using a function, that's what the message is
telling you
cheers,
seb.
On 24 Jun 2004, Francesco Perfetto wrote:
> Hi All,
>
> I have the following problem:
> I use the TVectorD class in my program,
> ...
> / definizione della Fermi Dirac e della tripla gaussiana
> Double_t norm_FD[] = {474.76,466.72,459.35,423.14};
> Double_t parFD[4][4];
> Double_t par3G[9][21];
>
> void riempi()
> {
> Int_t kfd = 0;
> for(Int_t i=1; i<=4; i++){
> for(Int_t j=0; j<4; j++){
> TVectorD *par = (TVectorD*)fpar->Get(Form("par%d",i));
> parFD[j][kfd] = par(j); <<<<<<<---------THIS IS LINE 81
> }
> kfd++;
> }
>
> Int_t kg3 = 0;
> for(Int_t i=5;i<=25; i++){
> for(Int_t j=0;j<9; j++){
> TVectorD *par = (TVectorD*)fpar->Get(Form("par%d",i));
> par3G[j][kg3] = par(j); <<<<------THIS IS LINE 90
> }
> kg3++;
> }
> }
>
> ...
>
> when I compile my program I have the following errors:
>
> likelihood.cc: In function `void riempi()':
> likelihood.cc:81: `par' cannot be used as a function
> likelihood.cc:90: `par' cannot be used as a function
> gmake: *** [Linux/likelihood.o] Error 1
>
> Can anyone help me?
>
> I use root 4.00/04 on linux redhat 9.0
>
> P.S. The same function riempi() work very well from the root prompt:
>
> root [0] .L inserimento_numeri.C
> root [1] riempi()
>
>
> Thanks
> Francesco.
>
>
>
>
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