topic Re: Location Allocation issue in ArcGIS Network Analyst Questions

Location Allocation issue

AnnChaney — Fri, 22 Nov 2019 15:49:39 GMT

When using Location Allocation in Network Analyst, is there a maximum number of Facilities and/or Demand Points? I am trying to solve using Target Market Share. I have 3,717 Facilities and 90,622 Demand Points. Every time I run the analysis, I receive a out of memory error. My laptop has 32gb of RAM. I am trying to determine if I am getting this error because I am hitting some sort of limitation within the tool or if this is truly a RAM issue.

Re: Location Allocation issue

MelindaMorang — Fri, 22 Nov 2019 16:17:01 GMT

You haven't said whether you're using ArcMap or ArcGIS Pro. If you're using ArcMap, then I am not surprised you're getting a memory error. ArcMap is an older 32-bit application that cannot use your system's full memory resources. If this is the case for you, I suggest you upgrade to ArcGIS Pro and try solving the problem there. Pro is a newer 64-bit application that can handle large problems much better.

If that doesn't work either, you might want to check out this DevSummit presentation about solving large network analysis problems:

Solving Large Problems video

Solving Large Problems downloads

Re: Location Allocation issue

AnnChaney — Fri, 22 Nov 2019 16:19:38 GMT

Yes, we are still using ArcMap but I do have ArcGIS Pro installed. I will try to run it there. Thanks for the tip!

Re: Location Allocation issue

JaySandhu — Mon, 25 Nov 2019 14:54:17 GMT

How many facilities are you solving for? Do you have a cutoff in place? If you do not have a cutoff to limit how far the facilities should look for demand, it will end up computing the entire distance matrix of 3,717 Facilities by 90,622 demand. This means a distance matrix with 367 million entries. It should work in Pro with 32 GB or RAM. But will take a while to compute and analyze. So do consider putting a meaningful distance or time cutoff to get faster results.

Jay Sandhu