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dodgr_sample

dodgr_sample

Description

Sample a random but connected sub-component of a graph

Usage

dodgr_sample(graph, nverts = 1000)

Arguments

graph

A flat table of graph edges. Must contain columns labelled from and to, or start and stop. May also contain similarly labelled columns of spatial coordinates (for example from_x) or stop_lon).
nverts

Number of vertices to sample

Value

A connected sub-component of graph

Note

Graphs may occasionally have nverts + 1 vertices, rather than the requested nverts.

See Also

Examples

graph <- weight_streetnet (hampi)
nrow (graph) # 5,742
graph <- dodgr_sample (graph, nverts = 200)
nrow (graph) # generally around 400 edges
nrow (dodgr_vertices (graph)) # 200
dodgr

Distances on Directed Graphs

v0.2.11
GPL-3
Authors
Mark Padgham [aut, cre], Andreas Petutschnig [aut], Robin Lovelace [ctb], Andrew Smith [ctb], Malcolm Morgan [ctb], Shane Saunders [cph] (Original author of included code for priority heaps)
Initial release

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