Yep, this is a bug, thanks for reporting it. It only happens with the
square shape, so until it is a corrected, a workaround is using
"rectangle" shape, with equal vertical and horizontal sizes:
g <- graph.ring(4)
g$layout <- layout.circle
V(g)$size <- seq_len(vcount(g)) * 10
V(g)$size2 <- V(g)$si
When the shape of all vertices is set to "square" and the size of the vertices
is also set, one get following error (commands attached):
Error in l[[which.min(sapply(l, function(p) (p[1] - x0)^2 + (p[2] - y0)^2))]] :
attempt to select less than one element
Is there a way to solve this pr
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