Create a bar chart in Python with Matplotlib


import modules

import pandas as pd
import numpy as np
%matplotlib inline
import matplotlib.pyplot as plt

create dummy dataframe

raw_data = {'name': ['Willard Morris', 'Al Jennings', 'Omar Mullins', 'Spencer McDaniel'],
'age': [20, 19, 22, 21],
'favorite_color': ['blue', 'blue', 'yellow', "green"],
'grade': [88, 92, 95, 70]}
df = pd.DataFrame(raw_data, index = ['Willard Morris', 'Al Jennings', 'Omar Mullins', 'Spencer McDaniel'])
df
age favorite_color grade name
Willard Morris 20 blue 88 Willard Morris
Al Jennings 19 blue 92 Al Jennings
Omar Mullins 22 yellow 95 Omar Mullins
Spencer McDaniel 21 green 70 Spencer McDaniel

generate a bar plot using matplotlib

#filter the dataframe on student grades, so we can plot that variable
df = df[['grade']]
#set up the plot
my_plot = df.plot(kind='bar',title="Student grades",figsize=(9, 7))
my_plot.set_ylabel('Grade')
<matplotlib.text.Text at 0x10ca91ba8>


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