Mike,
You have many scoping problems in your macro. You should create
your objects in the heap if you want to still see them once
the macro has finished.
You will find below a simplification of your macro:
Rene Brun
void test_bug(){
TH1F *h1 = new TH1F("h1", "h1", 100, 1, 100);
TH1F *h2 = new TH1F("h2", "h2", 100, 100, 200);
TCanvas *can = new TCanvas("can", "can", 600, 800);
can->Divide(1,2);
can->cd(1);
TPad *pad1 = (TPad*)gPad;
h1->Draw();
can->cd(2);
TPad *pad2 = (TPad*)gPad;
h2->Draw();
Double_t result = 0;
Int_t i = 0;
while(i<1000){
result = gRandom->Gaus(50, 5);
if(result < 50){
i++;
continue;
}
h1->Fill(result);
h2->Fill(result*2);
if(i%10 == 0){
pad1->Modified();
pad2->Modified();
can->Update();
}
i++;
}
}
On Thu, 16 Aug 2001, Mike Kordosky wrote:
> Hi,
>
> I have the following macro. The macro works as expected if I comment out
> the continue statement. When I leave continue in, CINT complains:
>
> root [1] test_bug();
> Error: non class,struct,union object $gPad used with . or ->
> FILE:TestBug.C LINE:24
>
> void test_bug(){
> TH1F h1("h1", "h1", 100, 1, 100);
> TH1F h2("h2", "h2", 100, 100, 200);
> TCanvas can("can", "can", 1000, 1000);
> can.Divide(1,2);
> can.cd(1);
> h1.Draw();
> can.cd(2);
> h2.Draw();
> Double_t result = 0;
> Int_t i = 0;
> // for(Int_t i = 0; i<1000; i++){
> while(i<1000){
> result = gRandom->Gaus(50, 5);
> if(result < 50){
> i++;
> continue;
> }
> h1.Fill(result);
> h2.Fill(result*2);
> if(i%10 == 0){
> can.cd(1);
> h1.Draw();
> gPad->Update();
> can.cd(2);
> h2.Draw();
> gPad->Update();
> }
> i++;
> }
> }
>
>
> Is this a bug, or am I missing something?
>
> Mike Kordosky
>
> --
> Graduate Research Assistant // High Energy Physics Lab
> kordosky@hep.utexas.edu // University of Texas at Austin
> kordosky@fnal.gov //
> ph: (512) 471-8426 (RLM Lab, Office)
> (512) 475-8673 (ENS Lab)
>
>
>
>
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