How to remove outline of circle marker when using pyplot.plot in matplotlib

Question

I'm producing a scatter plot using pyplot.plot (instead of scatter - I'm having difficulties with the colormap)

I am plotting using the 'o' marker to get a circle, but the circle always has a black outline.

How do I remove the outline, or adjust its colour?

Answer 1

To remove the outline of a marker, and adjust its color, use markeredgewidth (aka mew), and markeredgecolor (aka mec) respectively.

Using this as a guide:

import numpy as np import matplotlib.pyplot as plt  x = np.arange(0, 5, 0.1) y = np.sin(x)  plt.plot(x,          y,          color='blue',          marker='o',          fillstyle='full',          markeredgecolor='red',          markeredgewidth=0.0) 

This produces:

As you notice, even though the marker edge color is set, because the width of it is set to zero it doesn't show up.