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Do not mutate data when using custom text format #1352

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Jun 18, 2024
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1 change: 1 addition & 0 deletions hvplot/converter.py
Original file line number Diff line number Diff line change
Expand Up @@ -2566,6 +2566,7 @@ def labels(self, x=None, y=None, data=None):
self._error_if_unavailable('labels')
self.use_index = False
data, x, y = self._process_chart_args(data, x, y, single_y=True)
data = data.copy()
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text = self.kwds.get('text')
if not text:
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1 change: 1 addition & 0 deletions hvplot/tests/testcharts.py
Original file line number Diff line number Diff line change
Expand Up @@ -412,6 +412,7 @@ def test_labels_format(self):
plot = self.df.hvplot('x', 'y', text='({x}, {y})', kind='labels')
assert list(plot.dimensions()) == [Dimension('x'), Dimension('y'), Dimension('label')]
assert list(plot.data['label']) == ['(1, 2)', '(3, 4)', '(5, 6)']
assert 'label' not in self.df

def test_labels_no_format_edge_case(self):
plot = self.edge_df.hvplot.labels('Longitude', 'Latitude')
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