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I am writing in regards to the Huff Model that Drew Flater posted on ESRI's website since I seem to be running into a problem whenever I try to run it with a network. I've tried emailing/contacting the author, but no luck.

The model is not generating outputs for all of my supply points, including my planned store location whenever I run the model with a network I've created. I've followed ESRI's tutorial on creating multi-modal/pedestrian networks.

I've got 172 supply points (cafes) + 1 (my potential site), but when I run the Huff Model toolbox the analysis only gives me outputs for 69 supply points? Why am I not getting outputs (probability & sales) for all 173 supply points? Screenshots are below.

The model runs fine whenever I do not include a network, but I need the Huff Model to account for travel time/multi-modal transportation networks...the example below is meant to account for solely walking since I'm modeling walking distances to and from local coffee shops.

Please note I have 141 Demand Points (polygons, neighborhoods) and 173 supply points in total:

NETWORK:

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SUPPLY POINTS OUTPUTS AFTER RUNNING HUFF MODEL TOOL:

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MAP & SUPPLY POINTS FULL LIST:

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  • What are other differences between your failing and succeding supply points? Are the missing ones maybe not fetching to your road-network?
    – DirkB.
    Jul 6, 2017 at 8:08
  • I think it had to do with the cafes/supply points not being snapped/connected to a road! This is a bit old, but thanks for asking!
    – Ray
    Jul 7, 2017 at 8:30

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