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How to visualize data using bar chart in python?
Description

How to visualize data using bar chart in python.

Process

  import matplot library and then import sub package pyplot.

  Load the data set.

   Take two variables in the sample data.

   Using plt.bar(arguments) to plot bar chart in python.

Sapmle Code

#import library

import matplotlib.pyplot as plt

import pandas as pd

import numpy as np

#10 sample data

data={‘name’:[‘sathish’,’raj’,’raja’,’krishna’

,’yusuf’,’praveen’,’sangee’,’ezhil’,’dinesh’,

‘ganesh’], ‘salary’:[100,200,300,400,500,400,

300,200,100,50],’age’:[25,26,25,23,30,29,23,

23,25,25], ‘rating’:[4,3.24,2.5,2.25,2,2.25,

2.5,2.75,3.2,4.2], ‘bonus’:[2500,1200,900,

3000,1800,1400,850,250,750, 1000]}

#creating data frame

df=pd.DataFrame(data)

#numpy method that generates an

array of sequential numbers

index = np.arange(len(df[‘name’]))

# this is for plotting purpose

plt.bar(index, df[‘age’])

plt.ylabel(‘Age’)

plt.xticks(index, df[‘name’],

fontsize=5, rotation=30)

plt.show()

Screenshots