ENH: make monthly byranges be 1 and 15

jklymak · jklymak · commit 07eeb57611f3 · 2018-03-24T13:28:37.000-07:00
diff --git a/lib/matplotlib/dates.py b/lib/matplotlib/dates.py
@@ -1338,7 +1338,11 @@ def get_locator(self, dmin, dmax):
             self._freq = freq
 
             if self._byranges[i] and self.interval_multiples:
-                byranges[i] = self._byranges[i][::interval]
+                if i == 2 and interval == 14:
+                    # special case for monthday: Just tick 1 and 15:
+                    byranges[i] = range(1, 16, 14)
+                else:
+                    byranges[i] = self._byranges[i][::interval]
                 interval = 1
             else:
                 byranges[i] = self._byranges[i]
