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FIX: slow plots of pandas objects (Second try) #6997

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Merged
merged 1 commit into from
Aug 29, 2016
Merged

FIX: slow plots of pandas objects (Second try) #6997

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15 changes: 6 additions & 9 deletions lib/matplotlib/units.py
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Original file line number Diff line number Diff line change
Expand Up @@ -44,7 +44,7 @@ def default_units(x, axis):
from __future__ import (absolute_import, division, print_function,
unicode_literals)

from matplotlib.cbook import iterable, is_numlike
from matplotlib.cbook import iterable, is_numlike, safe_first_element
import numpy as np


Expand Down Expand Up @@ -155,14 +155,11 @@ def get_converter(self, x):
converter = self.get_converter(next_item)
return converter

if converter is None and iterable(x):
for thisx in x:
# Make sure that recursing might actually lead to a solution,
# if we are just going to re-examine another item of the same
# kind, then do not look at it.
if classx and classx != getattr(thisx, '__class__', None):
converter = self.get_converter(thisx)
return converter
if converter is None and iterable(x) and (len(x) > 0):
thisx = safe_first_element(x)
if classx and classx != getattr(thisx, '__class__', None):
converter = self.get_converter(thisx)
return converter

# DISABLED self._cached[idx] = converter
return converter
Expand Down