Skip to content
Related Articles

Related Articles

Improve Article

Python Bokeh – Plotting Rectangles on a Graph

  • 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 rectangles on a graph. Plotting rectangles on a graph can be done using the rect() method of the plotting module.

plotting.figure.rect()

Syntax : rect(parameters)

Parameters :

  • x : x-coordinates of the center of the rectangle
  • y : y-coordinates of the center of the rectangle
  • width : width of the rectangle
  • width_units : unit of the width of the rectangle
  • height : height of the rectangle
  • height_units : unit of the height of the rectangle

Returns : an object of class GlyphRenderer



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




# 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 Rectangle Graph",
               match_aspect = True)
      
# the points to be plotted
x = 0
y = 0
width = 10
height = 5
     
# plotting the graph
graph.rect(x,
           y,
           width,
           height)
      
# displaying the model
show(graph)

Output :

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




# 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 Rectangle 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, 3, 5]
y = [0, 3, 3]
width = [2, 4, 6]
height = [2, 3, 8]
  
# color value of the rectangle
color = ["yellow", "red", "blue"]
  
# fill alpha value of the rectangle
fill_alpha = [0.9, 0.7, 0.5]
  
# plotting the graph 
graph.rect(x,
           y,
           width,
           height,
           color = color,
           fill_alpha = fill_alpha) 
       
# displaying the model 
show(graph)

Output :

 Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.  

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning – Basic Level Course




My Personal Notes arrow_drop_up
Recommended Articles
Page :