FIX: let boxplot take pandas position

jklymak · jklymak · commit cdf5dadb87ae · 2018-07-15T13:54:53.000-07:00
diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
@@ -3643,12 +3643,12 @@ def dopatch(xs, ys, **kwargs):
         N = len(bxpstats)
         datashape_message = ("List of boxplot statistics and `{0}` "
                              "values must have same the length")
-        # check position
         if positions is None:
             positions = list(range(1, N + 1))
-        elif len(positions) != N:
+        positions = self.convert_xunits(positions)
+        if len(positions) != N:
             raise ValueError(datashape_message.format("positions"))
-
+        
         # width
         if widths is None:
             widths = [np.clip(0.15 * np.ptp(positions), 0.15, 0.5)] * N
diff --git a/lib/matplotlib/axes/_base.py b/lib/matplotlib/axes/_base.py
@@ -3099,7 +3099,6 @@ def set_xlim(self, left=None, right=None, emit=True, auto=False,
         self._process_unit_info(xdata=(left, right))
         left = self._validate_converted_limits(left, self.convert_xunits)
         right = self._validate_converted_limits(right, self.convert_xunits)
-
         old_left, old_right = self.get_xlim()
         if left is None:
             left = old_left
diff --git a/lib/matplotlib/axis.py b/lib/matplotlib/axis.py
@@ -4,6 +4,7 @@
 
 import datetime
 import logging
+import numbers
 import warnings
 
 import numpy as np
@@ -1510,13 +1511,15 @@ def have_units(self):
     def convert_units(self, x):
         # If x is already a number, doesn't need converting
         if munits.ConversionInterface.is_numlike(x):
-            return x
+            if isinstance(x, numbers.Number):
+                return x
+            return np.asarray(x)
 
         if self.converter is None:
             self.converter = munits.registry.get_converter(x)
 
         if self.converter is None:
-            return x
+            return np.asarry(x)
 
         ret = self.converter.convert(x, self.units, self)
         return ret
