Examples for 'od::od_id_order'

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

Aliases: od_id_order

Keywords: 

### ** 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 oneway_key is in order

  stplanr.id1 stplanr.id1.1 oneway_key
1           1             1        1 1
2           1             2        1 2
3           2             3        2 3
4           2             1        1 2
5           3             4        3 4
[Package od version 0.5.1 Index]