Python Data Analysis

Legends and annotations

Legends and annotations are effective tools to display information required to comprehend a plot in a glance. A typical plot will have the following additional information elements:

• A legend describing the various data series in the plot. This is provided by invoking the matplotlib legend() function and supplying the labels for each data series.
• Annotations for important points in the plot. The matplotlib annotate() function can be used for this purpose. A matplotlib annotation consists of a label and an arrow. This function has many parameters describing the label and arrow style and position, so you may need to call help(annotate) for a detailed description.
• Labels on the horizontal and vertical axes. These labels can be ...