Python Business Intelligence Cookbook

Showing the histogram as a stepped line

Matplotlib allows a number of different histogram types. In this recipe, you will create a stepped line histogram. This is an exact copy of the previous recipes except for a single argument, hist() - histtype='step'.

How to do it…

1. To create a histogram as a stepped line, begin by importing all the required libraries. To show the matplotlib plots 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 as plt

2. Next, connect to MongoDB and run a query specifying the five fields to be retrieved from the MongoDB data:

   client = MongoClient('localhost', 27017) ...