Radar chart using bokeh

Radar.py

import numpy as np
from bokeh.plotting import figure, show, output_file
from bokeh.models import ColumnDataSource, LabelSet

num_vars = 9

theta = np.linspace(0, 2*np.pi, num_vars, endpoint=False)
# rotate theta such that the first axis is at the top
theta += np.pi/2

def unit_poly_verts(theta):
    """Return vertices of polygon for subplot axes.
    This polygon is circumscribed by a unit circle centered at (0.5, 0.5)
    """
    x0, y0, r = [0.5] * 3
    verts = [(r*np.cos(t) + x0, r*np.sin(t) + y0) for t in theta]
    return verts

def radar_patch(r, theta):
    yt = (r + 0.01) * np.sin(theta) + 0.5
    xt = (r + 0.01) * np.cos(theta) + 0.5
    return xt, yt

verts = unit_poly_verts(theta)
x = [v[0] for v in verts] 
y = [v[1] for v in verts] 

p = figure(title="Radar")
text = ['Sulfate', 'Nitrate', 'EC', 'OC1', 'OC2', 'OC3', 'OP', 'CO', 'O3']
source = ColumnDataSource({'x':x+ [0.5],'y':y+ [1],'text':text})

p.line(x="x", y="y", source=source)

labels = LabelSet(x="x",y="y",text="text",source=source)

p.add_layout(labels)

# example factor:
f1 = np.array([0.88, 0.01, 0.03, 0.03, 0.00, 0.06, 0.01, 0.00, 0.00]) * 0.5
f2 = np.array([0.07, 0.95, 0.04, 0.05, 0.00, 0.02, 0.01, 0.00, 0.00]) * 0.5
f3 = np.array([0.01, 0.02, 0.85, 0.19, 0.05, 0.10, 0.00, 0.00, 0.00]) * 0.5
f4 = np.array([0.02, 0.01, 0.07, 0.01, 0.21, 0.12, 0.98, 0.00, 0.00]) * 0.5
f5 = np.array([0.01, 0.01, 0.02, 0.71, 0.74, 0.70, 0.00, 0.00, 0.00]) * 0.5
#xt = np.array(x)
flist = [f1,f2,f3,f4,f5]
colors = ['blue','green','red', 'orange','purple']
for i in range(len(flist)):
    xt, yt = radar_patch(flist[i], theta)
    p.patch(x=xt, y=yt, fill_alpha=0.15, fill_color=colors[i])
show(p)

Hey, thanks for sharing this code! I am trying to adapt it and have a question; how do you set where the text appears in the plot? My issue right now is that the text is far too close to the center

Yes - the text coordinates are specified when creating the LabelSet object(https://gist.github.com/anthonydouc/2ad82f89b4e827f001d786c2b41f4328#file-radar-py-L34)