brewer¶
< burtin | back to Gallery | elements >
import numpy as np
import pandas as pd
from bokeh.plotting import figure, show, output_file
from bokeh.palettes import brewer
N = 20
categories = ['y' + str(x) for x in range(10)]
data = {}
data['x'] = np.arange(N)
for cat in categories:
data[cat] = np.random.randint(10, 100, size=N)
df = pd.DataFrame(data)
df = df.set_index(['x'])
def stacked(df, categories):
areas = dict()
last = np.zeros(len(df[categories[0]]))
for cat in categories:
next = last + df[cat]
areas[cat] = np.hstack((last[::-1], next))
last = next
return areas
areas = stacked(df, categories)
colors = brewer["Spectral"][len(areas)]
x2 = np.hstack((data['x'][::-1], data['x']))
p = figure(x_range=(0, 19), y_range=(0, 800))
p.grid.minor_grid_line_color = '#eeeeee'
p.patches([x2] * len(areas), [areas[cat] for cat in categories],
color=colors, alpha=0.8, line_color=None)
output_file("brewer.html", title="brewer.py example")
show(p)