[yoda-svn] r490 - trunk/src

[blackhole at projects.hepforge.org]

Author: dgrell
Date: Wed Jul  4 17:57:48 2012
New Revision: 490

Log:
fixes for unfilled histos

Modified:
   trunk/src/Histo1D.cc
   trunk/src/WriterYODA.cc

Modified: trunk/src/Histo1D.cc
==============================================================================
--- trunk/src/Histo1D.cc	Wed Jul  4 02:19:45 2012	(r489)
+++ trunk/src/Histo1D.cc	Wed Jul  4 17:57:48 2012	(r490)
@@ -60,6 +60,9 @@
       sumwx += b.sumWX();
       sumw  += b.sumW();
     }
+    if ( sumw == 0 ) {
+      throw LowStatsError("Requested mean of a Histo1D with no net fill weights");
+    }
     return sumwx/sumw;
   }
 

Modified: trunk/src/WriterYODA.cc
==============================================================================
--- trunk/src/WriterYODA.cc	Wed Jul  4 02:19:45 2012	(r489)
+++ trunk/src/WriterYODA.cc	Wed Jul  4 17:57:48 2012	(r490)
@@ -44,7 +44,8 @@
 
     os << "# BEGIN YODA_HISTO1D " << h.path() << "\n";
     _writeAnnotations(os, h);
-    os << "# Mean: " << h.mean() << "\n";
+    if ( h.totalDbn().numEntries() > 0 )
+      os << "# Mean: " << h.mean() << "\n";
     os << "# Area: " << h.integral() << "\n";
     os << "# xlow\t xhigh\t sumw\t sumw2\t sumwx\t sumwx2\t numEntries\n";
     os << "Total   \tTotal   \t";