December 2015
Beginner to intermediate
202 pages
4h
English
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Creating a histogram for a column
A histogram is a graph that shows the distribution of numerical data. The matplotlib Python library makes creating a histogram a snap. Here's how.
Getting ready
Before using this recipe, familiarize yourself with the following recipes as we'll be building on them:
- Creating a Pandas DataFrame from a MongoDB query
- Generating a frequency table for a single column by date
How to do it…
- To create a histogram for a single column in a Pandas DataFrame, begin by importing all the required libraries. To show
matplotlibplots in IPython Notebook, we will use an IPython magic function which starts with%:%matplotlib inline import pandas as pd import numpy as np from pymongo import MongoClient import matplotlib as mpl import matplotlib.pyplot ...
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