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I'm new to GIS (using ArcGIS 10.4) and stuck on the following problem: I need a way to find ideal locations for supermarkets that will service the most people possible based on proximity (as the crow flies).

To solve this I used Location-Allocation Analysis (Network Analyst Extension) with the problem type "maximise coverage".

closed as too broad by PolyGeo Jan 10 '17 at 9:09

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    Before going through the workflow -have you thought about what your measure for successful placement of a grocery store would be? That is, would it serve X amount of people, or would it serve Y area of low income area? – DPSSpatial Jan 9 '17 at 14:22
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    Welcome to GIS SE. As a new user please take the Tour. Unfortunately, this question may not be specific enough for our "Focused question / Best answer" model. Several possibilities present themselves, but most are of an iterative nature, depending on whether the question is the :minimum number" or the locations of the minimum number (which may be an infinite set). Also of concern is the way distance is calculated (crow-fly or linear model) – Vince Jan 9 '17 at 14:28
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    @Jess do you have a population dataset you could use to intersect with the buffer/service area of the proposed grocery store? Or are you more concerned with simply covering your area with the 1mi buffers of the grocery stores you place? – DPSSpatial Jan 9 '17 at 15:26
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    @Jess well if you're toolset is ArcGIS then you should create a model that will use the proposed grocery store points as the input, buffer them by 1 mi, then create an output buffer shapefile / feature class (likely in the same folder as your proposed grocery store) . run the model once, add the result buffer to your map. You should be able to add a grocery store in an edit session, save the edits (stay in an edit session), run the model, and the buffer output should update in your map and you'll be able to see where the areas cover. Test that out for starters... – DPSSpatial Jan 9 '17 at 15:46
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    Do you have access to the Network Analyst extension? If so, and if the only condition for your new grocery stores is to service the grocery deserts, you may be able to achieve this using a Location-Allocation layer. – Adam Jan 10 '17 at 23:42