Index: trunk/psModules/src/objects/pmPCMdata.c
===================================================================
--- trunk/psModules/src/objects/pmPCMdata.c	(revision 29004)
+++ trunk/psModules/src/objects/pmPCMdata.c	(revision 29546)
@@ -104,6 +104,6 @@
     assert (source->psfImage); // XXX build if needed?
 
-    int x0 = source->peak->xf - source->psfImage->col0;
-    int y0 = source->peak->yf - source->psfImage->row0;
+    int x0 = source->peak->x - source->psfImage->col0;
+    int y0 = source->peak->y - source->psfImage->row0;
 
     // need to decide on the size: dynamically? statically?