Explicitly make major ticks of 5.0 units apart have 5 minor divisions

hershen · hershen · commit a769bef2838f · 2019-01-22T16:41:31.000-08:00
diff --git a/lib/matplotlib/ticker.py b/lib/matplotlib/ticker.py
@@ -2626,7 +2626,7 @@ def __call__(self):
 
             # The part after the 'or' is for #13069 to make minimal changes to
             # behaviour
-            if np.isclose(majorstep_no_exponent, 2.5) or (
+            if np.isclose(majorstep_no_exponent, [2.5, 5.0]).any() or (
                     (not np.isclose(majorstep_no_exponent, [1, 10]).any() and
                      int(np.round(majorstep_no_exponent)) in [1, 5, 10])):
                 ndivs = 5
