coords_to_od {od}

Convert coordinates into a data frame of origins and destinations

Description

Takes geographic coordinates and converts them into a data frame representing the potential flows, or 'spatial interaction', between every combination of points.

Usage

coords_to_od(p, interzone_only = FALSE, ids_only = FALSE)

Arguments

p

A spatial points object or a matrix of coordinates representing points

interzone_only

Should the result only include interzonal OD pairs, in which the ID of the origin is different from the ID of the destination zone? FALSE by default

ids_only

Should a data frame with only 2 columns (origin and destination IDs) be returned? The default is FALSE, meaning the result should also contain the coordinates of the start and end points of each OD pair.

Value

A data frame object with O and D codes and origin and destination coordinates.

Examples

p = sf::st_coordinates(od_data_centroids[1:3, ])
od = points_to_od(p)
(od = coords_to_od(p, interzone_only = TRUE))
l = odc_to_sf(od[3:6], d = od[1:2])
l$v = 1
(l_oneway = od_oneway(l))
plot(l_oneway)