<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=iso-8859-7"> <META content="MSHTML 6.00.2600.0" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB></SPAN> </P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Hello All</SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB></SPAN> </P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I am trying to create the "pixelID" histogram of a g-camera with a pixelized scintillator of around 1300 pixels,</SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">As a default property, the number of bins in the ROOT histogram is 100 or few more than that...</SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">On the other hand, I want to store the number of counts in each of the pixel in a seperate bin in the histogram,</SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I search in the ROOT manual several methods or commands but I haven't done it yet...</SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Does anyone know how to create such a histogram?</SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB></SPAN> </P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Thanks, Nicolas</SPAN><SPAN lang=EN-GB><FONT face="Times New Roman" size=3> </FONT></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p><FONT face="Times New Roman" size=3> </FONT></o:p></SPAN></P></FONT></DIV></BODY></HTML>