matplotlib-intro change

Author: tshiya731

book/_toc.yml

@@ -91,8 +91,6 @@ parts:
     - file: matplotlib/intro.md
       title: Matplotlib
       sections:
-      - file: matplotlib/introduction.ipynb
-        title: "Introduction"
       - file: matplotlib/simple-plot.ipynb
         title: "Simple Plot"
       - file: matplotlib/customize.ipynb

book/matplotlib/intro.md

@@ -1,6 +1,24 @@
 # Matplotlib
 
-This chapter is all about ...
+Matplotlib is a Python module that allows you to create visualizations. Until now, you have probably used Excel to make graphs, but Python offers much more versatility. In this section, you will learn how to use <b><code>matplotlib</code></b> to make good-looking graphs.
 
-% a short overview for this chapter
+As always, let's import the module. We will also import numpy and pandas.
+
+
+```python
+import matplotlib.pyplot as plt
+import numpy as np
+import pandas as pd
+```
+
+From the <b><code>matplotlib</code></b> library we will discuss the following functions:
+- <b><code>plt.subplot()</code></b>
+- <b><code>plt.plot()</code></b>
+- <b><code>plt.title()</code></b>
+- <b><code>plt.suptitle()</code></b>
+- <b><code>plt.xlabel()</code></b> and <b><code>plt.ylabel()</code></b>
+- <b><code>plt.xlim()</code></b> and <b><code>plt.ylim()</code></b>
+- <b><code>plt.legend()</code></b>
+- <b><code>plt.grid()</code></b>
+- <b><code>plt.show()</code></b>