Enriching data points with annotations

The matplotlib.Axes.text(...) method adds a text box to our plots:

ax.text(1, 10000, 'Generated using numpy and matplotlib')
fig

The output is as follows:

Figure 5.8 – Plot displaying Matplotlib text annotations

The matplotlib.Axes.annotate(...) method provides more control over the annotations.

The code block that follows uses the following parameters to control the annotation:

• The xy= parameter specifies the location of the data point.
• The xytext= parameter specifies the location of the text box.
• The arrowprops= parameter accepts a dictionary specifying parameters to control the arrow from the text box to the data point.
• The facecolor= parameter specifies the color and the shrink= parameter specifies the size of the arrow.
• The horizontalalignment= and verticalalignment= parameters specify the orientation of the text box relative to the data point.

The code...