How can I plot point spread function?

ROOT
1

Hi ,
I simulated SPECT camera using Gate simulation. I want to calculate and plot point spread function(psf) from root output of Gate simulation. For doing this work I need .C file which calculate and plot psf. But, I don’t know how can write the related comments. Would you please help me?

2

It depends which from have your data. If they are in, let say, vector of doubles you can use TGraph to draw them. There is many example here:
root.cern/doc/master/group__tut … raphs.html

3

Thank you for sending graphs tutorial. but I know how to plot the graph, I need the commends ( orders) that calculate the point spread function and then plot it . In fact I need the commends in .C file for psf.