diff -u -r1.3 -r1.4
--- Cartesian3DMagneticFieldMap.cc	29 Aug 2013 21:33:17 -0000	1.3
+++ Cartesian3DMagneticFieldMap.cc	4 Sep 2013 00:43:58 -0000	1.4
@@ -110,13 +110,11 @@

 	cout << "done loading field map" << endl;
 }
 

-void Cartesian3DMagneticFieldMap::GetFieldValue(const double point[4],
-	double *Bfield ) const

+void Cartesian3DMagneticFieldMap::GetFieldValue(const double point[4], double *Bfield ) const

 {
 

-    /** @todo Add x + y offset. */
-	double x = point[0];
-	double y = point[1];

+	double x = point[0] + _xOffset;
+	double y = point[1] + _yOffset;

 	double z = point[2] + _zOffset;
 
 	// Check that the point is within the defined region