python subplot add legend to all plots code example
Example 1: matplotlib one legend for all subplots
handles, labels = ax.get_legend_handles_labels()
fig.legend(handles, labels, loc='upper center')
Example 2: subplot matplotlib legend
ax1.legend("HHZ 1",loc="upper right")
ax2.legend("HHN",loc="upper right")
ax3.legend("HHE",loc="upper right")