I'm happy to answer your question.
Your script looks good and it runs without problem in both 'Float_t y[8]'
declaration on my machine. In such case, it is likely that there is a hidden
strange character in the line
Float_t y[8] = {1.65, 37.96, 54.90, 69.21, 101.0, 164.80, 213.70,
350.60};
I guess you have cleared the hidden character sometime and the problem
disappeared.
Thank you
Masaharu Goto
====================================================================
As of 2.21-08 the following trivial script does not work....
Am I doing something stupid? cheers. Steve.
// Jitter plots
#include <iostream.h>
void jitter()
{
Float_t x[8] = {24.81,125.9,226.9,328.,429.1,1035.0,2046.,4067.};
Float_t y[8] = {1.65, 37.96, 54.90, 69.21, 101.0, 164.80, 213.70,
350.60};
// Comment out the above line and uncomment the line below
// and it works fine!
// Float_t y[8] = {1.65, 37.96, 54.90, 69.21, 101.0, 164.80, 213.70,350.60};
Float_t ptp[8] = {12.0, 272.0, 349.0, 564.0, 700.0, 1084.0, 1592.0,2190.0};
Int_t n = 8,i;
for(i=0;i<n;i++) cout << i << " " << x[i] << " " << y[i] << endl;
gr = new TGraph(n,x,y);
gr->SetLineColor(2);
gr->SetLineWidth(3);
gr->SetMarkerColor(4);
gr->SetMarkerStyle(21);
gr->Draw("ALP");
}