Index: trunk/stac/src/stacSize.c
===================================================================
--- trunk/stac/src/stacSize.c	(revision 3469)
+++ trunk/stac/src/stacSize.c	(revision 3610)
@@ -91,4 +91,6 @@
 
     // Tweak the maps to account for the offset
+    config->xMapDiff = floor(xMin);
+    config->yMapDiff = floor(yMin);
     for (int i = 0; i < nImages; i++) {
 	psPlaneTransform *map = maps->data[i]; // The map of interest