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Polars の `DataFrame.plot` を Google Colaboratory で動かす

Last updated at Posted at 2024-01-23

Polars 0.20.3DataFrame.plot が追加されました 🎉

2024-01-23現在、Google Colaboratory で動かすには細工が必要だったのでメモを残します。
これをやらないと一回目の DataFrame.plot ではグラフが表示されるのに二回目は表示されないです。

コード

%pip -q install -U hvplot holoviews

def _render(self, **kwargs):
    # https://github.com/holoviz/holoviews/issues/3551#issuecomment-578394636
    import holoviews as hv
    hv.extension("bokeh")  # type: ignore
    return hv.Store.render(self)

__import__("holoviews").core.Dimensioned._repr_mimebundle_ = _render
%pip -q install -U polars[numpy,plot]
import numpy as np
import polars as pl

df = (
    pl.DataFrame({"x": np.linspace(0, 2 * np.pi)})
    .with_columns(
        y=np.sin(pl.col("x")),
        日本語も使える=np.cos(pl.col("x"))
    )
)

df.plot(x="x", y=["y", "日本語も使える"], subplots=True).cols(1)

bokeh_plot.png

なんでなん

セキュリティ上の都合ならしゃーない

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