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df2visittrips
2008 Jul 02
1
flow map lines between point pairs (latitude/longitude)
I have a dataset giving traffic between pairs of ports, and the
lat/lon of each port, roughly as follows:
sample data as follows
> df2VisitTrips[1:4,]
Origin Destination NumberOfTrips OriginLatitude OriginLongitude
DestinationLatitude DestinationLongitude
1 P1 P16 1 39.45965
-80.15633 40.76111 -79.54583
2 P1 P3 1 39.45965
-80.15633 39.5...