ridgeplot (original) (raw)

A ridgeline plot using the Perceptions of Probability dataset.

This example demonstrates the uses of categorical offsets to position categorical values explicitly, which in this case allows for makeshift sub-plots. This is because the real data is not available for presentation, so for example it’s not possible to show ridge line values in hover tool.

A better alternative is to use sub-coordinates as demonstrated in exampleexamples/plotting/ridgeplot_subcoordinates.py.

This chart shows the distribution of responses to the prompt What probability would you assign to the phrase “Highly likely”.

Details

Sampledata:

bokeh.sampledata.perceptions

Bokeh APIs:

figure.patch, bokeh.models.ColumnDataSource

More info:

Categorical series with offsets

Keywords:

alpha, categorical, palette, patch, ridgeline

import colorcet as cc from numpy import linspace from scipy.stats import gaussian_kde

from bokeh.models import ColumnDataSource, FixedTicker, PrintfTickFormatter from bokeh.plotting import figure, show from bokeh.sampledata.perceptions import probly

def ridge(category, data, scale=20): return list(zip([category]len(data), scaledata))

cats = list(reversed(probly.keys()))

palette = [cc.rainbow[i*15] for i in range(17)]

x = linspace(-20, 110, 500)

source = ColumnDataSource(data=dict(x=x))

p = figure(y_range=cats, width=900, x_range=(-5, 105), toolbar_location=None)

for i, cat in enumerate(reversed(cats)): pdf = gaussian_kde(probly[cat]) y = ridge(cat, pdf(x)) source.add(y, cat) p.patch('x', cat, color=palette[i], alpha=0.6, line_color="black", source=source)

p.outline_line_color = None p.background_fill_color = "#efefef"

p.xaxis.ticker = FixedTicker(ticks=list(range(0, 101, 10))) p.xaxis.formatter = PrintfTickFormatter(format="%d%%")

p.ygrid.grid_line_color = None p.xgrid.grid_line_color = "#dddddd" p.xgrid.ticker = p.xaxis.ticker

p.axis.minor_tick_line_color = None p.axis.major_tick_line_color = None p.axis.axis_line_color = None

p.y_range.range_padding = 0.12

show(p)