[GRASS-SVN] r74478 - grass-addons/grass7/imagery/i.segment.uspo

[svn_grass at osgeo.org]

Author: mlennert
Date: 2019-05-10 07:50:18 -0700 (Fri, 10 May 2019)
New Revision: 74478

Modified:
   grass-addons/grass7/imagery/i.segment.uspo/i.segment.uspo.py
Log:
i.segment.uspo: check for 0 before division and provide alternative


Modified: grass-addons/grass7/imagery/i.segment.uspo/i.segment.uspo.py
===================================================================
--- grass-addons/grass7/imagery/i.segment.uspo/i.segment.uspo.py	2019-05-10 14:40:46 UTC (rev 74477)
+++ grass-addons/grass7/imagery/i.segment.uspo/i.segment.uspo.py	2019-05-10 14:50:18 UTC (rev 74478)
@@ -515,8 +515,14 @@
                                               neighbordict, parms['indicator'])
                 autocor_per_raster.append(autocor)
 
-            mean_lv = sum(variance_per_raster) / len(variance_per_raster)
-            mean_autocor = sum(autocor_per_raster) / len(autocor_per_raster)
+            if len(variance_per_raster) > 0:
+                mean_lv = sum(variance_per_raster) / len(variance_per_raster)
+            else:
+                mean_lv = 999999
+            if len(autocor_per_raster) > 0:
+                mean_autocor = sum(autocor_per_raster) / len(autocor_per_raster)
+            else:
+                mean_autocor = 0
             result_queue.put([mapname, mean_lv, mean_autocor, threshold, hr,
                               radius, minsize])