Index: /issm/trunk-jpl/src/c/classes/Elements/SegRef.cpp
===================================================================
--- /issm/trunk-jpl/src/c/classes/Elements/SegRef.cpp	(revision 17622)
+++ /issm/trunk-jpl/src/c/classes/Elements/SegRef.cpp	(revision 17623)
@@ -246,11 +246,7 @@
 
 	IssmDouble x1=xyz_list[3*0+0];
-	IssmDouble y1=xyz_list[3*0+1];
-	IssmDouble z1=xyz_list[3*0+2];
 	IssmDouble x2=xyz_list[3*1+0];
-	IssmDouble y2=xyz_list[3*1+1];
-	IssmDouble z2=xyz_list[3*1+2];
-
-	*J=.5*sqrt(pow(x2-x1,2) + pow(y2-y1,2) + pow(z2-z1,2));
+
+	*J=.5*fabs(x2-x1);
 }
 /*}}}*/