topic Re: calculating distance matrix for a group of points in ArcGIS Network Analyst Questions

calculating distance matrix for a group of points

KhaledAhmed — Tue, 15 Jul 2014 07:38:49 GMT

Hello,

I have a layer with points. Now I´m trying to calculate the distance from each point to all other points with the network analyst. The points are not part of the street network I created. But I want to calculate the distance with by this street network.

The problem is

1. how can i join the points with the network ( how to find the nearest street network node to each point)?

2.how can i calculate the shortest distance form each point to all the other points ?

Re: calculating distance matrix for a group of points

DanPatterson_Retired — Tue, 15 Jul 2014 08:17:15 GMT

In many of the analyses in NA, the point file will be either your origins or destinations. How far are the points from the network? Did you set up a search tolerance when creating the network?

Re: calculating distance matrix for a group of points

KhaledAhmed — Tue, 15 Jul 2014 13:23:36 GMT

Do you mean to try to make OD cost matrix?

The points distances from the network are 20-250 m.

Re: calculating distance matrix for a group of points

DanPatterson_Retired — Tue, 15 Jul 2014 13:25:52 GMT

If the points are within the search tolerance that you specified, they should be found. There is no harm in trying

Re: calculating distance matrix for a group of points

JaySandhu — Thu, 31 Jul 2014 22:12:51 GMT

OD Cost Matrix is the way to find the network distances between sets of points. And when you do Load Locations or use the GP tool Add Locations, it automatically finds the closest edge the points will snap to. If you just want to know where they will snap to on the network then you can use the GP tool Calculate Locations for that.

Jay Sandhu