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Annulus.py
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Annulus.py
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import numpy as np
from bokeh.document import Document
from bokeh.models import ColumnDataSource, DataRange1d, Plot, LinearAxis, Grid
from bokeh.models.glyphs import Annulus
from bokeh.plotting import show
N = 9
x = np.linspace(-2, 2, N)
y = x**2
source = ColumnDataSource(dict(x=x, y=y))
xdr = DataRange1d()
ydr = DataRange1d()
plot = Plot(
title=None, x_range=xdr, y_range=ydr, plot_width=300, plot_height=300,
h_symmetry=False, v_symmetry=False, min_border=0, toolbar_location=None)
glyph = Annulus(x="x", y="y", inner_radius=.2, outer_radius=.4, fill_color="#7fc97f")
plot.add_glyph(source, glyph)
xaxis = LinearAxis()
plot.add_layout(xaxis, 'below')
yaxis = LinearAxis()
plot.add_layout(yaxis, 'left')
plot.add_layout(Grid(dimension=0, ticker=xaxis.ticker))
plot.add_layout(Grid(dimension=1, ticker=yaxis.ticker))
doc = Document()
doc.add(plot)
show(plot)