Below is the code i am trying to run in command window but it says error “can’t call TGraph” and gives me the list of TGraph types… HELP!!!
int main()
{
ifstream inputFile;
string Line;
inputFile.open("data.txt", ios::in);
while ( getline(inputFile, Line, '\n') )
{
vector<string> columns;
stringstream ss(Line);
string word;
while (getline(ss, word, '\t'))
columns.push_back(word);
TCanvas *c1 = new TCanvas();
TGraph *g_plot = new TGraph (columns.size(), &columns[0], &columns[1]);
g_plot->Draw("al");
c1->SaveAs("vec.png");
}
}