Matplotlib Plot Dashed Circles (using plt.plot instead of plt.scatter)

Question

Given the following:

import matplotlib.pyplot as plt 
import numpy as np 
#http://matplotlib.org/api/pyplot_api.html#matplotlib.pyplot.scatter
x = np.random         


        

Answer 1

You can use the dotted circle (ur'$\u25CC$') from the STIX font (pdf with all symbols here) using mathtext functionality

 plt.plot(x, y, marker=ur'$\u25CC$', markerfacecolor='r', 
                markeredgecolor='r', markersize=30, linestyle='none', )

Note, that markerfacecolor is set to a color as well.

A drawback is that they need a certain size to be distinguishable from a closed circle.