od_id_order: Generate ordered ids of OD pairs so lowest is always first...

In stplanr: Sustainable Transport Planning

Generate ordered ids of OD pairs so lowest is always first This function is slow on large datasets, see szudzik_pairing for faster alternative

Description

Generate ordered ids of OD pairs so lowest is always first This function is slow on large datasets, see szudzik_pairing for faster alternative

Usage

od_id_order(x, id1 = names(x)[1], id2 = names(x)[2])

Arguments

x	A data frame or SpatialLinesDataFrame, representing an OD matrix
id1	Optional (it is assumed to be the first column) text string referring to the name of the variable containing the unique id of the origin
id2	Optional (it is assumed to be the second column) text string referring to the name of the variable containing the unique id of the destination

See Also

Other od: od2line(), od2odf(), od_aggregate_from(), od_aggregate_to(), od_coords2line(), od_coords(), od_id, od_oneway(), od_to_odmatrix(), odmatrix_to_od(), points2flow(), points2odf()

Examples

x <- data.frame(id1 = c(1, 1, 2, 2, 3), id2 = c(1, 2, 3, 1, 4))
od_id_order(x) # 4th line switches id1 and id2 so stplanr.key is in order

stplanr documentation built on Sept. 15, 2023, 9:07 a.m.