added check on digit array

diff --git a/HLT/CALO/AliHLTCaloClusterAnalyser.cxx b/HLT/CALO/AliHLTCaloClusterAnalyser.cxx
index 63d5cb4a2908d6b075df15d6075414ad28b9ffab..04267b63cb744ea4acfd8f377a1a1f0769f6b42f 100644 (file)
--- a/HLT/CALO/AliHLTCaloClusterAnalyser.cxx
+++ b/HLT/CALO/AliHLTCaloClusterAnalyser.cxx
@@ -124,45 +124,47 @@ AliHLTCaloClusterAnalyser::CalculateCenterOfGravity()
 /*       Float_t maxAmp = 0;
        Int_t maxX = 0;
        Int_t maxZ = 0;*/
-      for(iDigit = 0; iDigit < recPoint->fMultiplicity; iDigit++)
-       {
-
-         digit = fDigitDataArray[*digitIndexPtr];
-
-         xi = digit->fX;
-         zi = digit->fZ;
-
-         //xi = digit->fX+0.5;
-         //zi = digit->fZ+0.5;
-
-         if (recPoint->fAmp > 0 && digit->fEnergy > 0) 
-           {
-             Float_t w = TMath::Max( 0., fLogWeight + TMath::Log( digit->fEnergy / recPoint->fAmp ) ) ;
-             x    += xi * w ;
-             z    += zi * w ;
-             wtot += w ;
-/*           if(digit->fEnergy > maxAmp)
-             {
-                maxAmp = digit->fEnergy;
-                maxX = digit->fX;// + 0.5;
-                maxZ = digit->fZ;// + 0.5;
-             }*/
-           }
-         digitIndexPtr++;
-       }
-
-      if (wtot>0) 
-       {
-         recPoint->fX = x/wtot ;
-         recPoint->fZ = z/wtot ;
-       }
-      else
-       {
-         recPoint->fX = -9999;
-          recPoint->fZ =-9999;
-         // no good crashes depth with FP exception
-         //recPoint->fAmp = 0;
-       }
+       if (fDigitDataArray[*digitIndexPtr])
+
+        for(iDigit = 0; iDigit < recPoint->fMultiplicity; iDigit++)
+          {
+            
+            digit = fDigitDataArray[*digitIndexPtr];
+            
+            xi = digit->fX;
+            zi = digit->fZ;
+            
+            //xi = digit->fX+0.5;
+            //zi = digit->fZ+0.5;
+            
+            if (recPoint->fAmp > 0 && digit->fEnergy > 0) 
+              {
+                Float_t w = TMath::Max( 0., fLogWeight + TMath::Log( digit->fEnergy / recPoint->fAmp ) ) ;
+                x    += xi * w ;
+                z    += zi * w ;
+                wtot += w ;
+                /*           if(digit->fEnergy > maxAmp)
+                             {
+                             maxAmp = digit->fEnergy;
+                             maxX = digit->fX;// + 0.5;
+                             maxZ = digit->fZ;// + 0.5;
+                             }*/
+              }
+            digitIndexPtr++;
+          }
+       
+       if (wtot>0) 
+        {
+          recPoint->fX = x/wtot ;
+          recPoint->fZ = z/wtot ;
+        }
+       else
+        {
+          recPoint->fX = -9999;
+          recPoint->fZ =-9999;
+          // no good crashes depth with FP exception
+          //recPoint->fAmp = 0;
+        }
 //     printf("Max digit: E = %f, x = %d, z= %d, cluster: E = %f, x = %f, z = %f\n" , maxAmp, maxX, maxZ, recPoint->fAmp, recPoint->fX, recPoint->fZ);
     }
   return 0;