Remove division by zero error when data is all zeroes

jacobian · Feb 12, 2010 · e477b52 · e477b52
1 parent bbd8238
commit e477b52
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/googlecharts/templatetags/charts.py b/googlecharts/templatetags/charts.py
@@ -868,7 +868,9 @@ def num2chars(n, value_range):
 
 def norm(n, value_range):
     minvalue, maxvalue = value_range
-    if minvalue >= 0:
+    if minvalue == maxvalue:
+        return 0
+    elif minvalue >= 0:
         return int(round(float(n) / maxvalue * 4095, 0))
     elif maxvalue <= 0:
         return 4095 - int(round(float(n) * 4095 / minvalue))