od_dist {stplanr} | R Documentation |
It is common to want to know the Euclidean distance between origins and destinations
in OD data. You can calculate this by first converting OD data to SpatialLines data,
e.g. with od2line()
. However this can be slow and overkill if you just
want to know the distance. This function is a few orders of magnitude faster.
od_dist(flow, zones)
flow |
A data frame representing origin-destination data.
The first two columns of this data frame should correspond
to the first column of the data in the zones. Thus in |
zones |
A spatial object representing origins (and destinations if no separate destinations object is provided) of travel. |
Note: this function assumes that the zones or centroids in cents
have a geographic
(lat/lon) CRS.
Other od:
dist_google()
,
od2line()
,
od2odf()
,
od_aggregate_from()
,
od_aggregate_to()
,
od_coords2line()
,
od_coords()
,
od_id
,
od_oneway()
,
od_to_odmatrix()
,
odmatrix_to_od()
,
points2flow()
,
points2odf()
data(flow) data(cents) od_dist(flow, cents)