Take this simple macro:
[code]double survprobL(double *x, double *par) {
double p21 = (pow(1+sqrt(1-par[1]),2.0)/4)*par[0]*
pow(sin(1.27*par[2]*par[5]/x[0]),2.0);
double p31 = (1+sqrt(1-par[0])/2)*par[1]*
pow(sin(1.27*par[4]*par[5]/x[0]),2.0);
double p32 = (1-sqrt(1-par[0])/2)*par[1]*
pow(sin(1.27*par[3]*par[5]/x[0]),2.0);
return 1 - p21 -p31 -p32;
}
int main() {
double p[6];
p[0] = 0.857; // sin^2 theta_12
p[1] = 0.098; // sin^2 theta_13
p[2] = 7.50E-5; // Delta^2 m_21
p[3] = 2.32E-3; // Delta^2 m_32
p[4] = p[2] + p[3]; // Delta^2 m_31
p[5] = 52000 ; // Lenght in m
//define function and set options
TF1 *FsurvprobL = new TF1(“FsurvprobL”,survprobL,0.,10,6);
FsurvprobL -> SetNpx(1000);
// set parameters, as setup in above
FsurvprobL -> SetParameter(0,p[0]);
FsurvprobL -> SetParameter(1,p[1]);
FsurvprobL -> SetParameter(2,p[2]);
FsurvprobL -> SetParameter(3,p[3]);
FsurvprobL -> SetParameter(4,p[4]);
FsurvprobL -> SetParameter(5,p[5]);
FsurvprobL->Draw();
TFile * file = new TFile("juno.root","RECREATE");
FsurvprobL->Write();
return 0;
}
[/code]
ROOT performs correctly the drawing, but if I try to look at the saved plot:
Warning in TCanvas::ResizePad: Inf/NaN propagated to the pad. Check drawn objects.
Warning in TCanvas::ResizePad: Canvas_1 height changed from 0 to 10
Any suggestions?
Thanks