Hi!
I have a histogram and the x axis is set on the channels from a file.
Is there a way to change (or calibrate) the x axis if we have a simple linear function that converts: E(KeV)=m*(channel)+b
Here is my macro:
{
auto am241=new TH1F("am241",
"am241;N_{counts};# occurencies",
4095, //number of bins
-0.5, //x-axis min
4095.5); //x-axis max
ifstream inp; double x;
inp.open("Am241.TKA");
for (int i=0; i<4095; i++) {
inp >> x;
am241->SetBinContent(i,x);
}
}
this is what I get as output: