Function radius_with_mode 

pub fn radius_with_mode(
    graph: &Graph,
    mode: EccMode,
) -> IgraphResult<Option<u32>>

Radius of graph under the given mode. None for vcount == 0.

Counterpart of igraph_radius(_, NULL_weights, _, mode).

Examples

use rust_igraph::{Graph, radius_with_mode, EccMode};

let mut g = Graph::with_vertices(3);
g.add_edge(0, 1).unwrap();
g.add_edge(1, 2).unwrap();
assert_eq!(radius_with_mode(&g, EccMode::All).unwrap(), Some(1));