<div dir="ltr"><div><div><div><div><div>Hi Tasneem, These graphs are histograms. So Y axis is the number of events (Hits, Singles or Coincidences your are looking at) per histogram bin. The X axis corresponds to the leave you are looking at. </div>For the energy, it is quite straightforward. </div>Each event has a different eventID, but as you are looking at a histogram, the X axis is not continuous, it is binned = it is cut into intervals. So it counts the number of event corresponding to this interval. </div>If you want to do more with the root browser, you should have a look at the official root documentation. </div>Otherwise you can analyse the data inside the root file by using the built-in C++ interpretor of the root software. You can also refer to the root documentation for a deep understanding. Otherwise, just take the C++ code from one of the benchmarks in the Gate repository and modify it to do what you want to do, that's how everybody will usually start. </div>Cheers, Simon </div><div class="gmail_extra"> <div class="gmail_quote">On Fri, Feb 21, 2014 at 10:42 AM, Tasneem Rahman <<a href="mailto:Tasneem.Rahman@student.adfa.edu.au" target="_blank">Tasneem.Rahman@student.adfa.edu.au</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div link="blue" vlink="purple" lang="EN-AU"> <div> Hi All, I need your help to understand the root files. When I open the Root Object Browser, I can see the trees under the root file, i.e. Hits;92……Singles;37 …. Like this. Then under each tree I can see certain leaves. But I cannot actually interpret those figures based on X-Y axis. For instance, please find the attachments. In figure 1: eventID: What means the values in X and Y. Same question is for figure 2 and 3. Also how can I proceed with Root files. Is there any link or document to understand root files in better ways? And is it only to observe graphs? Or I can fetch some data from these graphs? Please help me with your expertise knowledge. Cheers, Tasneem </div> </div> _______________________________________________ Gate-users mailing list <a href="mailto:Gate-users@lists.opengatecollaboration.org">Gate-users@lists.opengatecollaboration.org</a> <a href="http://lists.opengatecollaboration.org/mailman/listinfo/gate-users" target="_blank">http://lists.opengatecollaboration.org/mailman/listinfo/gate-users</a> </blockquote></div> </div>