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import time
from numpy import pi, cos, sin, linspace, roll, zeros_like
from bokeh.plotting import *
from bokeh.objects import Glyph
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N = 50 + 1
r_base = 8
theta = linspace(0, 2*pi, N)
r_x = linspace(0, 6*pi, N-1)
rmin = r_base - cos(r_x) - 1
rmax = r_base + sin(r_x) + 1
colors = ["FFFFCC", "#C7E9B4", "#7FCDBB", "#41B6C4", "#2C7FB8", "#253494", "#2C7FB8", "#41B6C4", "#7FCDBB", "#C7E9B4"] * 5
cx = cy = zeros_like(rmin)
To run these examples you must execute the command python bokeh-server in the top-level Bokeh source directory first.
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output_notebook(url="default")
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figure(x_range=[-11, 11], y_range=[-11, 11], tools="pan,wheel_zoom,box_zoom,reset,previewsave")
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annular_wedge(
cx, cy, rmin, rmax, theta[:-1], theta[1:],
inner_radius_units="data",
outer_radius_units="data",
fill_color = colors,
line_color="black",
)
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renderer = [r for r in curplot().renderers if isinstance(r, Glyph)][0]
ds = renderer.data_source
show()
while True:
rmin = ds.data["inner_radius"]
rmin = roll(rmin, 1)
ds.data["inner_radius"] = rmin
rmax = ds.data["outer_radius"]
rmax = roll(rmax, -1)
ds.data["outer_radius"] = rmax
cursession().store_objects(ds)
time.sleep(.10)
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