Python Bokeh – Plotting Patches on a Graph

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 patches on a graph. Plotting patches on a graph can be done using the patch() method of the plotting module.

plotting.figure.patch()

Syntax : patch(parameters)

Parameters :

  • x : x-coordinates of the patch
  • y : y-coordinates of the patch

Returns : an object of class GlyphRenderer



Example 1 : In this example we will be using the default values for plotting the graph.

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# 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 Patch Graph"
     
# the points to be plotted
x = [0, 1, 2, 3, 4, 5]
y = [5, 2, 8, 5, 0, 10]
      
# plotting the graph 
graph.patch(x, y) 
       
# displaying the model 
show(graph)

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Output :

Example 2 : In this example we will be plotting the patch with various other parameters

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# 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 Patch Graph"
  
# name of the x-axis 
graph.xaxis.axis_label = "x-axis"
       
# name of the y-axis 
graph.yaxis.axis_label = "y-axis"
  
# points to be plotted
x = [0, 0, 1, 1, 4, 2, 8, 4]
y = [2.5, 0.5, 0.5, 2.5, 5, 9, 1, 0]
  
# color value of the patch
color = "yellow"
  
# fill alpha value of the patch
fill_alpha = 0.5
  
# name of the legend
legend_label = "Sample Patch"
  
# plotting the graph 
graph.patch(x, y,
            color = color,
            fill_alpha = fill_alpha,
            legend_label = legend_label) 
       
# displaying the model 
show(graph)

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Output :

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