[QGIS Commit] r14464 - trunk/qgis/src/analysis/raster

[svn_qgis at osgeo.org]

Author: mhugent
Date: 2010-10-31 10:41:57 -0700 (Sun, 31 Oct 2010)
New Revision: 14464

Modified:
   trunk/qgis/src/analysis/raster/qgsruggednessfilter.h
Log:
Added reference to algorithm description for ruggedness index

Modified: trunk/qgis/src/analysis/raster/qgsruggednessfilter.h
===================================================================
--- trunk/qgis/src/analysis/raster/qgsruggednessfilter.h	2010-10-31 17:12:39 UTC (rev 14463)
+++ trunk/qgis/src/analysis/raster/qgsruggednessfilter.h	2010-10-31 17:41:57 UTC (rev 14464)
@@ -20,7 +20,8 @@
 
 #include "qgsninecellfilter.h"
 
-/**Calculates the ruggedness index based on a 3x3 moving window*/
+/**Calculates the ruggedness index based on a 3x3 moving window.
+  Algorithm from Riley et al. 1999: A terrain ruggedness index that quantifies topographic heterogeneity*/
 class ANALYSIS_EXPORT QgsRuggednessFilter: public QgsNineCellFilter
 {
   public: