o fix sign

diff --git a/TPC/Base/AliTPCCorrectionLookupTable.cxx b/TPC/Base/AliTPCCorrectionLookupTable.cxx
index 312d30502d2f6eb80eb122ddc8cd7be647cf5bb0..c47108db66d9aed972a52ec8d156e76bc2d95724 100644 (file)
--- a/TPC/Base/AliTPCCorrectionLookupTable.cxx
+++ b/TPC/Base/AliTPCCorrectionLookupTable.cxx
@@ -364,7 +364,7 @@ void AliTPCCorrectionLookupTable::CreateResidual(AliTPCCorrection *distortion, A
         //get residual distortion
         distortion->DistortPoint(xdc, roc);
         correction->CorrectPoint(xdc, roc);
-        Float_t dx[3]={x[0]-xdc[0], x[1]-xdc[1], x[2]-xdc[2]};
+        Float_t dx[3]={xdc[0]-x[0], xdc[1]-x[1], xdc[2]-x[2]};
         
         mDxDist(ir,iz)=dx[0];
         mDyDist(ir,iz)=dx[1];