Adrian Secord introduces in “Weighted Voronoi Stippling” (2002) a techniques for generating stipple drawings from grayscale images using weighted centroidal Voronoi diagrams as in the traditional artis- tic technique of stippling that places small dots of ink onto paper such that their den- sity give the impression of tone. The paper is not accompanied by any code and, even though the webpage of the author points to a code archive, this one is actually nowhere to be found. We decided to replicate the method because it can be used for di erent purpose, especially in computational biology or neuroscience where the distribution of a cell population can be conveniently described by shades of grey. Read more at Rescience.