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Backport PR #31207 on branch 1.0.x (BUG: no longer raise user warning when plotting tz aware time series) #31601

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Feb 3, 2020
Merged

Backport PR #31207 on branch 1.0.x (BUG: no longer raise user warning when plotting tz aware time series) #31601

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2 changes: 1 addition & 1 deletion doc/source/whatsnew/v1.0.1.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -95,7 +95,7 @@ I/O
Plotting
^^^^^^^^

-
- Plotting tz-aware timeseries no longer gives UserWarning (:issue:`31205`)
-

Groupby/resample/rolling
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2 changes: 1 addition & 1 deletion pandas/plotting/_matplotlib/timeseries.py
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Expand Up @@ -251,7 +251,7 @@ def _maybe_convert_index(ax, data):
freq = frequencies.get_period_alias(freq)

if isinstance(data.index, ABCDatetimeIndex):
data = data.to_period(freq=freq)
data = data.tz_localize(None).to_period(freq=freq)
elif isinstance(data.index, ABCPeriodIndex):
data.index = data.index.asfreq(freq=freq)
return data
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5 changes: 3 additions & 2 deletions pandas/tests/plotting/test_datetimelike.py
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Expand Up @@ -45,11 +45,12 @@ def teardown_method(self, method):

@pytest.mark.slow
def test_ts_plot_with_tz(self, tz_aware_fixture):
# GH2877, GH17173
# GH2877, GH17173, GH31205
tz = tz_aware_fixture
index = date_range("1/1/2011", periods=2, freq="H", tz=tz)
ts = Series([188.5, 328.25], index=index)
_check_plot_works(ts.plot)
with tm.assert_produces_warning(None):
_check_plot_works(ts.plot)

def test_fontsize_set_correctly(self):
# For issue #8765
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