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

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)