I think I have a very noob question here. Using ArcGIS 10.0 and Network Analyst extension to create Origin-Destination Matrix. I have a shapefile of 120 points, and I want to create a matrix of shortest road network distances between all 120 points (120x120 matrix). I've tried using network datasets that (a) include the road network + points and (b) include road network only.
Using the OD tool, I load the points as both origins and destinations, so both read (120) once loaded. I set impedance to length, no cutoff value, and destinations to find
When I solve, I get lines (120), and the attribute table shows only 120 pairs: each point with itself. So all distances are 0. In other words, I get A-A, B-B, C-C, etc, not A-A, A-B, A-C, B-B, B-C, etc.