ADD LEGEND TO SCATTER PLOT MATPLOTLIB UPDATE

In the example here, we plot two lines, then plot. We could have, alternatively, given labels to the markers when they were plotted too. Fear not, though: It is still quite simple to add a second legend (or third, or fourth.) to an axes. The legend for the markers ( leg2) therefore required the lines and labels as arguments when it was instantiated. For example, add the following to the bottom of the above code: leg1.get_lines().set_lw(8)įinally, it's worth mentioning that in the example only the lines were given labels when plotted, meaning that ax.legend() adds only those lines to the leg1. The really great thing is that you can can still manipulate both legends. The first one you instantiate ( leg1) is removed from the figure when you add the second one, but the leg1 object still exists and can be added back with ax.add_artist. The key is to make sure you have references to the legend objects. # Add second legend for the maxes and mins. # Add first legend: only labeled data is included # Plot maxima and minima, and keep references to the lines

One legend is for the lines, and the other is for the markers. In the example here, we plot two lines, then plot markers on their respective maxima and minima.

ADD LEGEND TO SCATTER PLOT MATPLOTLIB UPDATE

This has been done so that it is possible to call legend() repeatedly to update the legend to the latest handles on the Axesįear not, though: It is still quite simple to add a second legend (or third, or fourth.) to an axes. If you call plt.legend() or ax.legend() more than once, the first legend is removed and a new one is drawn.

Add legend to scatter plot matplotlib