Could the functions eccentricity() and radius() be implemented for weighted graphs?

[jskvor]

Could the functions eccentricity() and radius() be updated to support weighted graphs, similar to how distances() and diameter() do when passed the weights argument?

I know I can calculate eccentricity and radius for a weighted graph like this:

g <- sample_pa(1000, directed = FALSE)
E(g)$weight <- runif(ecount(g))
my_eccentricity <- apply(distances(g), 1, max)
my_radius <- min(my_eccentricity)

However, for consistency and usability, I think it would be better if eccentricity() and radius() accepted a weights argument like distances() and diameter().

[szhorvat]

Note: The relevant C functions are igraph_eccentricity_dijkstra() and igraph_radius_dijkstra(). It makes sense to expose the closely related igraph_graph_center() and igraph_graph_center_dijkstra() as well. Some of these were added only in the recently released 0.10.7.

[github-actions]

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