{ "layers": [ { "currentVersion": 11.5, "cimVersion": "3.5.0", "id": 121, "name": "Marginal Land", "type": "Feature Layer", "description": "Marginally used land was defined and example areas initially identified in aerial imagery by the Food in Communities team. Additional samples for model training were created and identified by the Public Health GIS Analyst.Model had to be run in 3 \"chunks\" of aerial data area due to resource constraints. Outputs from these 3 areas were mosaiced to form 1 single image with overlap between the 3 areas (overlap created by including overlap image tiles between the 3 mosaiced areas). The full area analyzed includes the \"metro\" area - generally East of 470 and North of Chatfield Reservoir. Originally analyzed against 2022 aerial data because 2024 was not available at analysis start. Object detection results where further analyzed as follows: merge the 3 outputs into single output and erase impervious surfacesintersect on parcels, then dissolve this result on parcel PIN number. calculate sum marginal land area within each parceljoin this result to each of the following, using Parcel PIN number: parks from POI layer, libraries, schools, and places of worship (all of these must first be spatially joined to Parcel)polygon park and polygon open space layers which have assigned parcel PINs making up the park or open space area (will result in multiple parcels assigned to each park or open space)Not all areas identified as marginally used land will have a park, library, school, or open space area associated with them. The \"source\" field tells the user what, if any association exists. For more information on this process contact healthdata@jeffco.usStatic dataset. 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