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In this chapter, we will discuss Bokeh – Wedges and Arcs. The arc() method draws a simple line arc based on x and y coordinates, start and end angles, and radius. Angles are given in radians whereas radius may be in screen units or data units. The wedge is a filled arc.

The wedge() method has the same properties as the arc() method. Both methods have the provision of optional direction property which may be clock or anti-clock that determines the direction of arc/wedge rendering. The annular_wedge() function renders a filled area between arcs of inner and outer radius.

NumFocus sponsored by Bokeh project https://numfocus.org/.

Example Of Bokeh wedges and arcs

Here is an example of arc and wedge glyphs added to Bokeh figure −

from bokeh.plotting import figure, output_file, show
import math
fig = figure(plot_width = 300, plot_height = 300)
fig.arc(x = 3, y = 3, radius = 50, radius_units = 'screen', start_angle = 0.0, end_angle = math.pi/2)
fig.wedge(x = 3, y = 3, radius = 30, radius_units = 'screen',
start_angle = 0, end_angle = math.pi, direction = 'clock')
fig.annular_wedge(x = 3,y = 3, inner_radius = 100, outer_radius = 75,outer_radius_units = 'screen',
inner_radius_units = 'screen',start_angle = 0.4, end_angle = 4.5,color = "green", alpha = 0.6)
show(fig)

Output

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