Index: trunk/psModules/src/concepts/pmConceptsAverage.c
===================================================================
--- trunk/psModules/src/concepts/pmConceptsAverage.c	(revision 17396)
+++ trunk/psModules/src/concepts/pmConceptsAverage.c	(revision 17424)
@@ -226,2 +226,81 @@
 }
 
+bool pmConceptsAverageChips(pmChip *target, psList *sources, bool same)
+{
+    PS_ASSERT_PTR_NON_NULL(target, false);
+    PS_ASSERT_PTR_NON_NULL(sources, false);
+    PS_ASSERT_INT_POSITIVE(sources->n, false);
+
+    float temp       = 0.0;             // Temperature
+    int x0 = 0, y0 = 0;                 // Offset
+    int xParity = 0, yParity = 0;       // Parity
+    int xSize = 0, ySize = 0;
+    psString    id = NULL;
+
+    int nChips = 0;                     // Number of cells;
+    psListIterator *sourcesIter = psListIteratorAlloc(sources, PS_LIST_HEAD, false); // Iterator for sources
+    pmChip *chip = NULL;                // Source cell from iteration
+    while ((chip = psListGetAndIncrement(sourcesIter))) {
+        if (!chip) {
+            continue;
+        }
+        temp += psMetadataLookupF32(NULL, chip->concepts, "CHIP.TEMP");
+        if (nChips == 1) {
+            xSize = psMetadataLookupS32(NULL, chip->concepts, "CHIP.XSIZE");
+            ySize = psMetadataLookupS32(NULL, chip->concepts, "CHIP.YSIZE");
+            xParity = psMetadataLookupS32(NULL, chip->concepts, "CHIP.XPARITY");
+            yParity = psMetadataLookupS32(NULL, chip->concepts, "CHIP.YPARITY");
+            x0 = psMetadataLookupS32(NULL, chip->concepts, "CHIP.X0");
+            y0 = psMetadataLookupS32(NULL, chip->concepts, "CHIP.Y0");
+            id = psMetadataLookupStr(NULL, chip->concepts, "CHIP.ID");
+        } else {
+            if (xSize != psMetadataLookupS32(NULL, chip->concepts, "CHIP.XSIZE")) {
+                psWarning("Differing CHIP.XSIZE in use: %d vs %d\n", 
+                    xSize, psMetadataLookupS32(NULL, chip->concepts, "CHIP.XSIZE"));
+            }
+            if (ySize != psMetadataLookupS32(NULL, chip->concepts, "CHIP.YSIZE")) {
+                psWarning("Differing CHIP.YSIZE in use: %d vs %d\n", 
+                    ySize, psMetadataLookupS32(NULL, chip->concepts, "CHIP.YSIZE"));
+            }
+            if (xParity != psMetadataLookupS32(NULL, chip->concepts, "CHIP.XPARITY")) {
+                psWarning("Differing CHIP.XPARITY in use: %d vs %d\n", 
+                    xParity, psMetadataLookupS32(NULL, chip->concepts, "CHIP.XPARITY"));
+            }
+            if (yParity != psMetadataLookupS32(NULL, chip->concepts, "CHIP.YPARITY")) {
+                psWarning("Differing CHIP.YPARITY in use: %d vs %d\n", 
+                    yParity, psMetadataLookupS32(NULL, chip->concepts, "CHIP.YPARITY"));
+            }
+            if (x0 != psMetadataLookupS32(NULL, chip->concepts, "CHIP.X0")) {
+                psWarning("Differing CHIP.X0 in use: %d vs %d\n", 
+                    x0, psMetadataLookupS32(NULL, chip->concepts, "CHIP.X0"));
+            }
+            if (y0 != psMetadataLookupS32(NULL, chip->concepts, "CHIP.Y0")) {
+                psWarning("Differing CHIP.Y0 in use: %d vs %d\n", 
+                    y0, psMetadataLookupS32(NULL, chip->concepts, "CHIP.Y0"));
+            }
+            psString newID = psMetadataLookupStr(NULL, chip->concepts, "CHIP.ID");
+            if (id && newID && strcmp(id, newID)) {
+                psWarning("Differing CHIP.ID in use: %s vs %s\n", id, newID);
+            }
+        }
+    
+        nChips++;
+    }
+    psFree(sourcesIter);
+
+    temp      /= (float)nChips;
+
+    MD_UPDATE(target->concepts, "CHIP.TEMP", F32, temp);
+    if (same) {
+        MD_UPDATE(target->concepts, "CHIP.X0", S32, x0);
+        MD_UPDATE(target->concepts, "CHIP.Y0", S32, y0);
+        MD_UPDATE(target->concepts, "CHIP.XSIZE", S32, xSize);
+        MD_UPDATE(target->concepts, "CHIP.YSIZE", S32, ySize);
+        MD_UPDATE(target->concepts, "CHIP.XPARITY", S32, xParity);
+        MD_UPDATE(target->concepts, "CHIP.YPARITY", S32, yParity);
+        MD_UPDATE_STR(target->concepts, "CHIP.ID", id);
+    }
+
+    return true;
+}
+
Index: trunk/psModules/src/concepts/pmConceptsAverage.h
===================================================================
--- trunk/psModules/src/concepts/pmConceptsAverage.h	(revision 17396)
+++ trunk/psModules/src/concepts/pmConceptsAverage.h	(revision 17424)
@@ -4,6 +4,6 @@
  * @author Paul Price, IfA
  *
- * @version $Revision: 1.10 $ $Name: not supported by cvs2svn $
- * @date $Date: 2007-10-25 23:05:14 $
+ * @version $Revision: 1.11 $ $Name: not supported by cvs2svn $
+ * @date $Date: 2008-04-10 06:31:42 $
  * Copyright 2005-2006 Institute for Astronomy, University of Hawaii
  */
@@ -56,4 +56,10 @@
                            );
 
+/// Set a variety of concepts in a chip by averaging over several 
+bool pmConceptsAverageChips(pmChip *target,///< Target chip
+                            psList *sources, ///< List of source chips
+                            bool same   ///< Are the chips the same chip from different exposures?
+                           );
+
 /// @}
 #endif