Last Updated : 10 Jul, 2020
Bokeh is a Python interactive data visualization. It renders its plots using HTML and JavaScript. It targets modern web browsers for presentation providing elegant, concise construction of novel graphics with high-performance interactivity. Bokeh can be used to plot rays on a graph. Plotting rays on a graph can be done using the
ray()
method of the
plotting
module.
plotting.figure.ray()Syntax : ray(parameters) Parameters :Example 1 :Returns : an object of class
- x : x-coordinates of the starting points of the rays
- y : y-coordinates of the starting points of the rays
- length : length of the ray
- length_units : unit of the length of the rays
GlyphRenderer
In this example we will be using the default values for plotting the graph.
Python3
# importing the modules
from bokeh.plotting import figure, output_file, show
# file to save the model
output_file("gfg.html")
# instantiating the figure object
graph = figure(title = "Bokeh Rays Graph")
# the points to be plotted
x = 0
y = 0
# plotting the graph
graph.ray(x, y)
# displaying the model
show(graph)
Output : Example 2 :
In this example we will be plotting multiple rays with various other parameters.
Python3
# importing the modules
from bokeh.plotting import figure, output_file, show
from bokeh.palettes import magma
import numpy
# file to save the model
output_file("gfg.html")
# instantiating the figure object
graph = figure(title = "Bokeh Rays Graph")
# name of the x-axis
graph.xaxis.axis_label = "x-axis"
# name of the y-axis
graph.yaxis.axis_label = "y-axis"
# the points to be plotted
x = [0] * 256
y = [0] * 256
# angles of the rays
angle = numpy.linspace(0.00, 6.28, num = 256).tolist()
# color of the rays
color = magma(256)
# plotting the graph
graph.ray(x, y,
angle = angle,
color = color)
# displaying the model
show(graph)
Output :
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