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Thank you for your continued support. The problem seems to stem from the SourceID in the 'Demand Points' attribute table after we run Location Allocation. The points that do get a line drawn to them have the road network set as the source. The 'Demand Points' that do not have a line drawn to them use themselves as the SourceID. I've attached a screenshot of the attribute table for the demand points as well as a screenshot of the map after we run the tool. The specific message we receive regarding the Demand Points that do not receive a line is: "The Location_ in 'Demand Points' cannot be reached by one or more entries in 'Facilities.'" -Michael
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05-26-2014
03:28 PM
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Hi, Thank you for your quick response. I'm playing around with the tool as it seems to fit my situation perfectly. However, I'm receiving errors when I try run the tool. I repeatedly received a "Insufficient number of valid locations for 'Facilities' or 'Demand Points'" error message. I was able to resolve it by recreating the network dataset and altering some parameters. However, I'm encountering a problem where the Location Allocation tool selects 791 demand points out of 2698. I didn't expect every point to be connected, but there doesn't seem to be a reason or pattern to the demand points that were selected and the ones that were not. I even altered the facility's capacity and no matter what number (big or small), only 791 demand points are selected. Is this a weight issue? There are some instance where two points are right next to each other and one has a line drawn to it, but the other does not. Are there additional parameters I need to change? Thank you, Michael
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05-25-2014
12:30 PM
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Hi everyone, I'm doing a project involving water treatment facilities. The goal is to increase the supply of recycled water to various parcels which I have represented as centroids. I put my roads, facilities, and centroids into a network dataset for analysis. The facilities have a water capacity assigned to them and the centroids have a water demand assigned to them. I want to create a route from the facilities to the centroids to meet the water demands, but not exceed the water capacity of the facilities. I'm thinking I need to set the capacity as an impedance (almost like a cost), but I'm unsure how to do that. Any tips/advice would be much appreciated Thank you
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05-23-2014
04:29 PM
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