Index: /branches/eam_branch_20081230/psLib/src/sys/psType.h
===================================================================
--- /branches/eam_branch_20081230/psLib/src/sys/psType.h	(revision 21146)
+++ /branches/eam_branch_20081230/psLib/src/sys/psType.h	(revision 21147)
@@ -10,6 +10,6 @@
 *  @author Ross Harman, MHPCC
 *
-*  @version $Revision: 1.62.42.3 $ $Name: not supported by cvs2svn $
-*  @date $Date: 2009-01-17 20:31:06 $
+*  @version $Revision: 1.62.42.4 $ $Name: not supported by cvs2svn $
+*  @date $Date: 2009-01-21 22:27:51 $
 *
 *  Copyright 2004-2005 Maui High Performance Computing Center, University of Hawaii
@@ -145,4 +145,6 @@
 #define PS_TYPE_MASK_DATA U8           /**< the data member to use for mask image */
 #define PS_TYPE_MASK_NAME "psU8"       /**< the data type for mask as a string */
+#define PS_MIN_MASK_TYPE 0             /**< minimum valid Mask value */
+#define PS_MAX_MASK_TYPE UINT8_MAX     /**< maximum valid Mask value */
 typedef psU8 psMaskType;               ///< the C datatype for a mask image
 #define PS_NOT_MASK(A)(UINT8_MAX-(A))
@@ -157,11 +159,15 @@
 #define PS_TYPE_VECTOR_MASK_DATA U8           /**< the data member to use for mask image */
 #define PS_TYPE_VECTOR_MASK_NAME "psU8"       /**< the data type for mask as a string */
+#define PS_MIN_VECTOR_MASK_TYPE 0             /**< minimum valid Vector Mask value */
+#define PS_MAX_VECTOR_MASK_TYPE UINT8_MAX     /**< maximum valid Vector Mask value */
 typedef psU8 psVectorMaskType;			  ///< the C datatype for a mask image
 #define PS_NOT_VECTOR_MASK(A)(UINT8_MAX-(A))
 
 // macros to abstract the image mask type : these values must be consistent 
-#define PS_TYPE_IMAGE_MASK PS_TYPE_U16        /**< the psElemType to use for mask image */
-#define PS_TYPE_IMAGE_MASK_DATA U16           /**< the data member to use for mask image */
-#define PS_TYPE_IMAGE_MASK_NAME "psU16"       /**< the data type for mask as a string */
+#define PS_TYPE_IMAGE_MASK PS_TYPE_U16	     /**< the psElemType to use for mask image */
+#define PS_TYPE_IMAGE_MASK_DATA U16	     /**< the data member to use for mask image */
+#define PS_TYPE_IMAGE_MASK_NAME "psU16"	     /**< the data type for mask as a string */
+#define PS_MIN_IMAGE_MASK_TYPE 0             /**< minimum valid Image Mask value */
+#define PS_MAX_IMAGE_MASK_TYPE UINT16_MAX    /**< maximum valid Image Mask value */
 typedef psU16 psImageMaskType;               ///< the C datatype for a mask image
 #define PS_NOT_IMAGE_MASK(A)(UINT16_MAX-(A))