Flow-capturing location model

Chooses p nodes maximising the volume of flows whose path passes an open node, exactly by enumeration or by greedy addition and substitution.

Usage

FlowCapturingLocation(
  p,
  paths,
  volumes = NULL,
  n_nodes = NULL,
  max_enum = 2e+05
)

Arguments

p

Number of sites.

paths

List of integer node vectors (1-based), one per flow.

volumes

Flow volumes (default 1).

n_nodes

Number of candidate nodes (default the largest node index).

max_enum

Enumeration limit.

Value

list(sites, captured, captured_volume, share, method).

References

Hodgson, M. J. (1990). A flow-capturing location-allocation model. Geographical Analysis 22, 270-279.

Examples

FlowCapturingLocation(1, list(c(1, 2, 3), c(4, 2, 5), c(6, 7)))$captured_volume
#> [1] 2