Fix (Ruben)

[u/mrichter/AliRoot.git] / PWG1 / ITS / AliAnalysisTaskITSAlignQA.cxx

diff --git a/PWG1/ITS/AliAnalysisTaskITSAlignQA.cxx b/PWG1/ITS/AliAnalysisTaskITSAlignQA.cxx
index 8757ccf3c63313b66516eb8acfb350ecc9ab25c5..58aafdaf723ea2251e207fb53a338cfa6a4bed7c 100644 (file)
--- a/PWG1/ITS/AliAnalysisTaskITSAlignQA.cxx
+++ b/PWG1/ITS/AliAnalysisTaskITSAlignQA.cxx
@@ -469,7 +469,7 @@ void AliAnalysisTaskITSAlignQA::FitAndFillSDDrphi(const AliTrackPointArray *arra
       fHistSDDResidXvsZ[index]->Fill(zLocSDD[ip],resLoc[0]);
       //
       double cf = modSide[ip] ? 1.e4:-1.e4;
-      double xMeas = cf*xLocSDD[0];            // measured coordinate in microns
+      double xMeas = cf*xLocSDD[ip];            // measured coordinate in microns
       double xRes  = cf*resLoc[0];             // X residual in microns
       double xDriftTrue  = 3.5085e4 - (xMeas + xRes);   // "true" drift distance
       //