pub fn resistance_regularity(graph: &Graph) -> IgraphResult<f64>Expand description
Compute the resistance regularity ratio.
For each edge (u,v), the effective resistance is at least 1/min(deg(u),deg(v))
and at most 1. We use 1/min(deg(u), deg(v)) as a proxy for edge
resistance, then compute min_resistance / max_resistance over all edges.
Values near 1 indicate uniform edge resistances (regular graph);
values near 0 indicate highly non-uniform resistances. Returns 0.0
for trivial or edgeless graphs.
§Examples
use rust_igraph::{Graph, resistance_regularity};
// K_3: all edges have same resistance → ratio = 1.0
let g = Graph::from_edges(&[(0,1),(1,2),(0,2)], false, Some(3)).unwrap();
assert!((resistance_regularity(&g).unwrap() - 1.0).abs() < 1e-10);