Welcome 
Is there any way to get ferry routes vector data betwen ports? For example route Ancora-Patra. Where i can find this data?
Thx for your help
On 3/25/2012 2:52 PM, mzetka3@tlen.pl wrote:
Welcome
ports? For example route Ancora-Patra. Where i can find this data?
Well, if you can not find a shapefile you can probably get a schedule for the various ferries you are interested and connect the roadways with an edge between the various ports and set the cost to time/estimated distance. If they run on a regular frequency of departure times you can have 1/2 the time between departures to the travel time because on a random sample the average wait time for the ferry will be 1/2 the time between the departures. If you think people plan their route departure to arrive nearer the departure time then you can narrow that window, but you still have to assume that the if people get stuck in traffic or whatever they may miss the ferry they were planning on an have to wait a whole cycle for the next, so 1/2 the time is not a bad estimate.
-Steve