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REGR: Bar plot axis timestamp to string conversion error #46413

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Merged
merged 2 commits into from
Mar 20, 2022
Merged

REGR: Bar plot axis timestamp to string conversion error #46413

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10d17de
test: bar plot axis conversion regr test
ivan-ngchakming Mar 18, 2022
ce9e72c
test: added check plot works assertion
ivan-ngchakming Mar 19, 2022
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13 changes: 13 additions & 0 deletions pandas/tests/plotting/test_misc.py
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@
from pandas import (
DataFrame,
Series,
Timestamp,
)
import pandas._testing as tm
from pandas.tests.plotting.common import (
Expand Down Expand Up @@ -549,3 +550,15 @@ def test_externally_shared_axes(self):
assert not plots[0][0].xaxis.get_label().get_visible()
assert plots[0][1].xaxis.get_label().get_visible()
assert not plots[0][2].xaxis.get_label().get_visible()

def test_plot_bar_axis_units_timestamp_conversion(self):
# GH 38736
# Ensure string x-axis from the second plot will not be converted to datetime
# due to axis data from first plot
df = DataFrame(
[1.0],
index=[Timestamp("2022-02-22 22:22:22")],
)
_check_plot_works(df.plot)
s = Series({"A": 1.0})
_check_plot_works(s.plot.bar)