Matplotlib 2.x By Example

Adding arrows

Here is another way to add arrows, which are more sophisticated than the single line we draw with pyplot.annotate().

Using the previous demand-supply example, substituting the annotation by pyplot.annotate() with the following code block will yield the blue arrow textbox as shown:

# Annotate the equilibrium point with arrow and textbbox_props = dict(boxstyle="rarrow", fc=(0.8, 0.9, 0.9), ec="b", lw=2)t = ax.text(2,5, "Equilibrium", ha="center", va="center", rotation=0,            size=12,bbox=bbox_props)bb = t.get_bbox_patch()bb.set_boxstyle("rarrow", pad=0.6)