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Next Article:
How to Change the Color of a Graph Plot using pygal?
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How to Change the Color of a Graph Plot in Matplotlib with Python?

Last Updated : 23 May, 2024
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Prerequisite: Matplotlib

Python offers a wide range of libraries for plotting graphs and Matplotlib is one of them. Matplotlib is simple and easy to use a library that is used to create quality graphs. The pyplot library of matplotlib comprises commands and methods that makes matplotlib work like matlab. The pyplot module is used to set the graph labels, type of chart and the color of the chart. The following methods are used for the creation of graph and corresponding color change of the graph.

Syntax: matplotlib.pyplot.bar(x, height, width, bottom, align, **kwargs)

Parameter:

  • x : sequence of scalers along the x axis
  • height : sequence of scaler determining the height of bar ie y-axis
  • width : width of each bar
  • bottom : Used to specify the starting value along the Y axis.(Optional)
  • align : alignment of the bar
  • **kwargs : other parameters one of which is color which obviously specifies the color of the graph.

Return Value: Returns the graph plotted from the specified columns of the dataset.

In this article, we are using a dataset downloaded from kaggel.com for the examples given below. The dataset used represent countries against the number of confirmed covid-19 cases. The dataset can be downloaded from the given link:

Dataset Used: Corona virus report

Example 1:

Python3

# import packages
import pandas as pd
import matplotlib
import matplotlib.pyplot as plt
  
# import dataset
df = pd.read_csv('country_wise_latest.csv')
  
# select required columns
country = df['Country/Region'].head(10)
confirmed = df['Confirmed'].head(10)
  
# plotting graph
plt.xlabel('Country')
plt.ylabel('Confirmed Cases')
plt.bar(country, confirmed, color='green', width=0.4)
  
# display plot
plt.show() 
                      
                      
                                                    
                       
                  
                  
  
    
Output
        
Example 2:
    
  
 
Python3
 
                   
                      
                          
                              
                                  
                                                                            
                                                                                                                  
                                                                            
                                                                                                                                                    
                              
                          
                      
                      
# import packages 
import pandas as pd 
import matplotlib 
import matplotlib.pyplot as plt 
  
# import dataset 
df = pd.read_csv('country_wise_latest.csv') 
  
# select required data 
country = df['Country/Region'].head(20) 
confirmed = df['Active'].head(20) 
  
# plot graph 
plt.xlabel('Country') 
plt.ylabel('Active Cases') 
plt.bar(country, confirmed, color='maroon', width=0.4) 
  
# display plot 
plt.show() 
                      
                          
                  
                  
                      
                                                    
                      
                      
                                                    
                       
                  
                  
  
    
Output
      

                                                                                      

                                                                                
                                          
                                                                                  
                                                                  
                              
                                
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                                          How to Change the Color of a Graph Plot using pygal?                                      
                                  
                                                          
                          
                              
                                          
                                              
                                                  
                                                  
                                                      
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                                                      Shreyasi_Chakraborty                                                
                                                  
                                                  
              
              
  
                                            
                                                                                        
                                          
                                                                                            
                                                                                                                                                  
                                                                                                                            
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