These functions are a collection of specific spatial edge measures, that
form a spatial extension to edge measures in
tidygraph.
edge_circuity()edge_length()
edge_straight_length()
A numeric vector of the same length as the number of edges in the graph.
edge_circuity: The ratio of the length of an edge
linestring geometry versus the straight-line distance between its boundary
nodes, as described in
Giacomin & Levinson,
2015.
edge_length: The length of an edge linestring geometry
as calculated by st_length.
edge_straight_length: The straight-line distance between the two
boundary nodes of an edge, as calculated by st_distance.
Just as with all tidygraph algorithms, spatial edge measures are
meant to be called inside tidygraph verbs such as mutate(), where
the graph that is currently being worked on is known and thus not needed
as an argument to the function. If you want to use an algorithm outside of
the tidygraph framework you can use with_graph to
set the graph context temporarily while the algorithm is being evaluated.