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Network analyst - service area: defining individual distances for each location

Question asked by PhocaV on Aug 15, 2014
Latest reply on Jan 15, 2015 by MMorang-esristaff

Hello everyone,

I have something like 10'000 locations on a Network. For all locations, I need now to get another location along the network with a specific individual pre-defined distance (I am working with ecological data and try to implement so called step-selection function on a species that moves on a network)


My shapefile looks like that:

Location (x/y)     Distance

A                         56

B                         360

C                         2350

D                         24


Now, I think I can use the service area in Network Analyst to get the polygons or lines to get the new locations (lets say A1-Ax, which have a distance of 56 m from A, B1-Bx with a distance of 360m from B etc.). However, I am at a loss how I can automatically calculate the new locations: Can I set the parameter "Distance" somewhere so that for every location the individual distance will be taken? How do I do that? And what is the best approach to get the locations (is it easier to get it from the polygons or from lines? And how to retreive them from there?)

Thanks a lot!