How to make 2 graphs from file using ntuple?

[a_morales]

Hi dear rooters

The title is exactly the question, you’ll see I have a macro like this:

{
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>

FILE *fp1, *fp2,
float ptmp,p[30];
int i, iline=0;
ntuple = new TNtuple(“ntuple”,“NTUPLE”,“x:y:z”);
ntuple1 = new TNtuple(“ntuple1”,“NTUPLE”,“x:y:z”);

fp = fopen(“file1”,“r”);
while ( fscanf(fp,"%f",&ptmp) != EOF ){
p[i++]=ptmp;
if (i==3)
{
i=0; iline++;
ntuple->Fill(p[0],p[1],p[2]);
}
}

fp1 =fopen(“file2”,“r”);
while ( fscanf(fp1,"%f",&ptmp) != EOF ){
p[i++]=ptmp;
if (i==3)
{
i=0; iline++;
ntuple1->Fill(p[0],p[1],p[2]);
}
}

ntuple.Draw(“z:x”,"","");
ntuple1.Draw(“z:x”,"",“same”);
}

but I want to have these plots in 2 different pads on same canvas, one after another, same x axis and different y axis. Any comment or hint about it would be appreciated.
Thanks in advance.
Alma

[Danilo]

Hi Alma,

the answer is not related to tuples since you need to adopt the general way to draw on different pads in the same canvas. The steps are: create a canvas, partition it, access the individual partitions. In code:

TCanvas c;
c.Divide(2,1);
c.cd(1);
h1.Draw();
c.cd(2);
h2.Draw();

Cheers,
D

[a_morales]

OMG!

That is working so well Danilo, I can’t believe how easy this was , for sure I have to read more and look for some general options in every plot, like same range at x axis, legends and other stuff like that.
Thank you so much!!!
Have a nice day!
Alma