The Fruchterman-Reingold layout algorithm uses the current vertex locations as a starting point. "Lay Out Again" runs the algorithm again. Because Fruchterman-Reingold mimics attractive and repulsive forces between particles, the net result of clicking "Lay Out Again" is often that the vertices that are repelling each other end up farther apart.
I don't know if there is a correct number of clicks, or if there is even such a thing as an optimal result. Perhaps others reading this can offer advice.
-- Tony
I don't know if there is a correct number of clicks, or if there is even such a thing as an optimal result. Perhaps others reading this can offer advice.
-- Tony