My apologies. I ran the code from my local branch, which has a much-improved auto-ranging functionality that is yet to be merged. For Bokeh 0.8.1 and below you will need to specify a range explicitly for this particular kind of plot:

from bokeh.plotting import *

from numpy import pi

# define starts/ends for wedges from percentages of a circle

percents = [0, 0.3, 0.4, 0.6, 0.9, 1]

starts = [p*2*pi for p in percents[:-1]]

ends = [p*2*pi for p in percents[1:]]

# a color for each pie piece

colors = ["red", "green", "blue", "orange", "yellow"]

# NOTE: this is the changed line

p = figure(x_range=(-1,1), y_range=(-1,1))

p.wedge(x=0, y=0, radius=1, start_angle=starts, end_angle=ends, color=colors)

# display/save everythin

output_file("pie.html")

show(p)

Bokeh >0.9 will correctly compute the bounding area of all glyphs, not just "pointlike" marker glyphs, and setting the range inputs like this will not be required.

Thanks,

Bryan

## ···

On Mar 22, 2015, at 11:12 PM, Greg Thompson Jr. <[email protected]> wrote:

This does not work. Is your example supposed to display anything?

On Sunday, March 22, 2015 at 10:20:39 PM UTC-4, Bryan Van de ven wrote:

To be fair, Twitter is not exactly conducive to technical discussions. Here is a simple Pie chart using wedge, which takes a center point and radius as parameters, together with a list of start and end angles (currently in radians) for each wedge you want.

from bokeh.plotting import *

from numpy import pi

# define starts/ends for wedges from percentages of a circle

percents = [0, 0.3, 0.4, 0.6, 0.9, 1]

starts = [p*2*pi for p in percents[:-1]]

ends = [p*2*pi for p in percents[1:]]

# a color for each pie piece

colors = ["red", "green", "blue", "orange", "yellow"]

# create a figure and add a wedge glyph to it

p = figure()

p.wedge(x=0, y=0, radius=1, start_angle=starts, end_angle=ends, color=colors)

# display/save everythin

output_file("pie.html")

show(p)

If you get a chance, please update the SO question.

Thanks,

Bryan

> On Mar 22, 2015, at 8:48 PM, Greg Thompson Jr. <[email protected]> wrote:

>

> I'd like to construct a pie chart. Currently, the documentation covers donut charts. Visually, those appear to be the closest to what I'm looking for, but I don't know how I'd go about leveraging the `Donut` class to construct a pie chart. I was told by someone running the Bokeh Twitter page to check out wedges. That wasn't very helpful.

>

> Is there any working example of a pie chart? Ultimately, I will want to embed the chart in a webpage.

>

> I've also asked on StackOverflow: http://stackoverflow.com/questions/29201177/how-do-i-create-a-pie-chart-using-bokeh

>

> Thanks.

>

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