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Add simple polars explorer #1340

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Add simple polars explorer #1340

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e1c5819
Add simple polars explorer
hoxbro May 8, 2024
23d9f0c
Update ylim calculation to not fail if object dtype is passed in.
hoxbro May 8, 2024
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13 changes: 13 additions & 0 deletions hvplot/plotting/core.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1909,6 +1909,19 @@ def _get_converter(self, x=None, y=None, kind=None, **kwds):

return HoloViewsConverter(data, x, y, kind=kind, **params)

def explorer(self, x=None, y=None, **kwds):
import polars as pl
from ..ui import explorer as ui_explorer

if isinstance(self._data, (pl.DataFrame, pl.Series)):
data = self._data.to_pandas()
elif isinstance(self._data, pl.LazyFrame):
data = self._data.collect().to_pandas()
else:
raise ValueError('Only Polars DataFrame, Series, and LazyFrame are supported')

return ui_explorer(data, x=x, y=y, **kwds)


class hvPlot(hvPlotTabular):
"""
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4 changes: 3 additions & 1 deletion hvplot/ui.py
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Expand Up @@ -1031,7 +1031,9 @@ def ylim(self):
y = self._y
if not isinstance(y, list):
y = [y]
values = [ys for ys in (self._data[y] for y in y) if len(ys)]
values = [
ys for ys in (self._data[y] for y in y) if len(ys) and ys.dtype.kind not in 'OSU'
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Suggested change
ys for ys in (self._data[y] for y in y) if len(ys) and ys.dtype.kind not in 'OSU'
ys for ys in (self._data[y] for y in y) if len(ys) and (hasattr(ys, 'dtype') and ys.dtype.kind not in 'OSU')

]
if not len(values):
return (np.nan, np.nan)
return max_range([(np.nanmin(vs), np.nanmax(vs)) for vs in values])