Index: trunk/ppStats/src/ppStatsLoop.c
===================================================================
--- trunk/ppStats/src/ppStatsLoop.c	(revision 9738)
+++ trunk/ppStats/src/ppStatsLoop.c	(revision 10165)
@@ -163,6 +163,6 @@
         for (int i = 0; i < numSamples; i++) {
             int j = i * sampleSpace;
-            int y = j / image->numRows;
-            int x = j % image->numRows;
+            int y = j / image->numCols;
+            int x = j % image->numCols;
             sampleValues->data.F32[i] = image->data.F32[y][x];
             if (mask) {