how does od cost matrix calculate the distance from unsnapped origins to the network

Discussion created by tweyman on Feb 10, 2011
Latest reply on Feb 14, 2011 by jsandhu-esristaff

I'm wondering if anyone on here could tell me if (and how) ArcMap calculates the distance between unsnapped origin locations and the nearest segment on the road network when running OD cost matrix analysis.

For example, is the euclidean distance between the unsnapped origin point and the nearest location on a network edge included in the total distance calculation that OD cost matrix outputs?

I am running cost matrix analyses using a 150m fishnet of points across a study area as origins (unsnapped) and want to be sure that OD cost matrix includes the distance between the unsnapped origin and the nearest road segment in the calculation.