How to make hollow square tags with matplotlib in python

Question

The black line in the following graph is constructed using the following command for matplotlib python

pylab.semilogy(xaxis, pq_averages, 'ks-',color='black', label='DCTCP-PQ47.5') 

So, the "ks-" part indicates a solid line with square black marks. Thus, he had solid squares for the constructed points. Can these squares be made hollow?

Answer 1

Try adding markerfacecolor as follows:

 pylab.semilogy(xaxis, pq_averages, 'ks-', markerfacecolor='none', label='DCTCP-PQ47.5') 

Answer 2

Setting markerfacecolor='white' does not actually make them hollow, it makes them white. To make them hollow you need to set markerfacecolor='none' . In addition, you need to set markeredgecolor to the desired color. So:

 pylab.semilogy(xaxis, pq_averages, 'ks-',color='black', label='DCTCP-PQ47.5', markerfacecolor='none', markeredgecolor='black') 

Will do the job for you.