bike_distmat: Extract station-to-station distance matrix

In mpadge/bikedata: Download and Aggregate Data from Public Hire Bicycle Systems

Extract station-to-station distance matrix

Description

Extract station-to-station distance matrix

Usage

bike_distmat(bikedb, city, expand = 0.5, long = FALSE, quiet = TRUE)

Arguments

bikedb	A string containing the path to the SQLite3 database. If no directory specified, it is presumed to be in tempdir().
city	City for which tripmat is to be aggregated
expand	Distances are calculated by routing through the OpenStreetMap street network surrounding the bike stations, with the street network expanded by this amount to ensure all stations can be connected.
long	If FALSE, a square distance matrix of (num-stations, num_stations) is returned; if TRUE, a long-format matrix of (stn-from, stn-to, distance) is returned.
quiet	If FALSE, progress is displayed on screen

Value

If long = FALSE, a square matrix of numbers of trips between each station, otherwise a long-form tibble with three columns of of (start_station_id, end_station_id, distance)

Note

Distance matrices returned from bike_distamat use all stations listed for a given system, while trip matrices extracted with bike_tripmat will often have fewer stations because operational station numbers commonly vary over time. The two matrices may be reconciled with the match_trips2dists function, enabling then to be directly compared.

mpadge/bikedata documentation built on Feb. 11, 2024, 4:22 p.m.