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import hvplot.pandas  # noqa

Kernel density estimate (kde) provides a mechanism for showing the distribution and spread of the data. In hvplot the method is exposed both as kde and density.

from bokeh.sampledata import sea_surface_temperature as sst

df = sst.sea_surface_temperature
2017-03-21 22:00:00+00:00 4.000
2017-03-21 22:30:00+00:00 3.975
2017-03-21 23:00:00+00:00 4.017
2017-03-21 23:30:00+00:00 4.121
2017-03-22 00:00:00+00:00 4.316

There are many options exposed and explorable using tab completion. In this case we’ll create a colormap that spans the rainbow and divide the temperature by month.

import numpy as np
import colorcet as cc
categorical_cmap = [cc.rainbow[int(i)] for i in np.linspace(0, 255, 12)]
df.hvplot.kde(by='time.month', cmap=categorical_cmap, legend='top', height=400)