Merge pull request #30056 from qgis/backport-29992-to-release-3_4

luipir · web-flow · commit 6f075caf6278 · 2019-06-03T22:00:13.000+02:00
[Backport release-3_4] [processing] fix NDVI calculation
diff --git a/python/plugins/processing/algs/qgis/ui/RasterCalculatorWidgets.py b/python/plugins/processing/algs/qgis/ui/RasterCalculatorWidgets.py
@@ -120,7 +120,7 @@ def okPressed(self):
 
 class ExpressionWidget(BASE, WIDGET):
 
-    _expressions = {"NDVI": "([NIR] - [Red]) % ([NIR] + [Red])"}
+    _expressions = {"NDVI": "([NIR] - [Red]) / ([NIR] + [Red])"}
 
     def __init__(self, options):
         super(ExpressionWidget, self).__init__(None)
