{ "currentVersion": 10.91, "cimVersion": "2.9.0", "id": 10, "name": "Philadelphia Geographic Market Areas 2016", "type": "Feature Layer", "description": "Description:GMA\u2019s (Geographic Market Area\u2019s) define the geographic areas within which home sales will be compared during the reassessment analysis. GMA\u2019s are determined primarily by differences in sale prices, housing stock and/or geographical factors. As GMA\u2019s are created based on the specific market conditions and the assessment year, GMA\u2019s should be analyzed and updated at regular intervals based on the fluctuating market conditions and before creating reassessment models.GMA\u2019s have been sporadically redefined by a subjective process by the OPA staff. Status: Features updated: 03/07/2013Attributes updated: 03/07/2013Metadata updated: 03/27/2013Update Frequency: Yearly, as neededAbstract:This dataset displays a polygon shape file that illustrates all of the 651 GMA\u2019s. The purpose is to locate properties for classification and comparison purposes in the City of Philadelphia. Data Description:This file is created based on property characteristics data collected by OPA Evaluators and is referenced to the DOR parcel layer and Street Centerline layer.Key attributes, field names and descriptions:FID: FID stands for 'Feature ID' which is a unique field representing each feature in the shapefile.SHAPE: This field indicates the type of geometry\u2014polygon.GMA: GMA stands for \u2018Geographic Market Area\u2019 code which is a 4 digit ID used to identify various neighborhoods.Feature geometry.Coordinate systemProjection: Lambert Conformal Conic XY Coordinate System: NAD 1983 State Plane Pennsylvania South FIPS 3702 (US Feet)Datum: NAD 1983Units of Measurement: Foot_US", "geometryType": "esriGeometryPolygon", "sourceSpatialReference": { "wkid": 102729, "latestWkid": 2272, "xyTolerance": 0.003280833333333333, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -119214200, "falseY": -96198500, "xyUnits": 3048.006096012192, "falseZ": -100000, "zUnits": 10000, "falseM": -100000, "mUnits": 10000 }, "copyrightText": "Credits : OPA IT/GIS Unit\n\nContact_Organization: Office of Property Assessment\n\nContact_Address: The Curtis Center\n 601 Walnut Street, Suite 300 North\n Philadelphia PA, 19106\n\nPhone: 215-686-4334 \nFax: 215-686-9223", "parentLayer": null, "subLayers": [], "minScale": 0, "maxScale": 0, "referenceScale": 0.0, "drawingInfo": { "renderer": { "type": "simple", "symbol": { "type": "esriSFS", "style": "esriSFSSolid", "color": [ 0, 0, 0, 0 ], "outline": { "type": "esriSLS", "style": "esriSLSSolid", "color": [ 110, 110, 110, 255 ], "width": 0.4 } } }, "scaleSymbols": true, "transparency": 0, "labelingInfo": null }, "defaultVisibility": false, "extent": { "xmin": -75.2844564628782, "ymin": 39.86085817471448, "xmax": -74.95383250179147, "ymax": 40.14386745435833, "spatialReference": { "wkt": "GEOGCS[\"NAD83_GEO\",DATUM[\"D_North_American_1983\",SPHEROID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"\",0.0],UNIT[\"Degree\",0.0174532925199433]]", "xyTolerance": 8.983152841195212E-9, "zTolerance": 2.0E-4, "mTolerance": 2.0E-4, "falseX": -400, "falseY": -400, "xyUnits": 1.125899906842624E13, "falseZ": -100000, "zUnits": 10000, "falseM": -100000, "mUnits": 10000 } }, "hasAttachments": false, "htmlPopupType": "esriServerHTMLPopupTypeAsHTMLText", "displayField": "GMA", "typeIdField": null, "subtypeFieldName": null, "subtypeField": null, "defaultSubtypeCode": null, "fields": [ { "name": "OBJECTID", "type": "esriFieldTypeOID", "alias": "OBJECTID", "domain": null }, { "name": "Shape", "type": "esriFieldTypeGeometry", "alias": "Shape", "domain": null }, { "name": "GMA", "type": "esriFieldTypeString", "alias": "GMA", "length": 4, "domain": null }, { "name": "Shape_Length", "type": "esriFieldTypeDouble", "alias": "Shape_Length", "domain": null }, { "name": "Shape_Area", "type": "esriFieldTypeDouble", "alias": "Shape_Area", "domain": null } ], "geometryField": { "name": "Shape", "type": "esriFieldTypeGeometry", "alias": "Shape" }, "indexes": [ { "name": "FDO_OBJECTID", "fields": "OBJECTID", "isAscending": true, "isUnique": true, "description": "" }, { "name": "FDO_Shape", "fields": "Shape", "isAscending": true, "isUnique": false, "description": "" } ], "subtypes": [], "relationships": [], "canModifyLayer": true, "canScaleSymbols": false, "hasLabels": false, "capabilities": "Map,Query,Data", "maxRecordCount": 1000, "supportsStatistics": true, "supportsExceedsLimitStatistics": true, "supportsAdvancedQueries": true, "supportedQueryFormats": "JSON, geoJSON, PBF", "isDataVersioned": false, "ownershipBasedAccessControlForFeatures": {"allowOthersToQuery": true}, "useStandardizedQueries": true, "supportedSpatialRelationships": [ "esriSpatialRelIntersects", "esriSpatialRelContains", "esriSpatialRelCrosses", "esriSpatialRelEnvelopeIntersects", "esriSpatialRelIndexIntersects", "esriSpatialRelOverlaps", "esriSpatialRelTouches", "esriSpatialRelWithin", "esriSpatialRelRelation" ], "advancedQueryCapabilities": { "useStandardizedQueries": true, "supportsStatistics": true, "supportsPercentileStatistics": true, "supportsHavingClause": true, "supportsOrderBy": true, "supportsDistinct": true, "supportsCountDistinct": true, "supportsPagination": true, "supportsLod": false, "supportsQueryWithLodSR": false, "supportsTrueCurve": true, "supportsQueryWithDatumTransformation": true, "supportsReturningQueryExtent": true, "supportsQueryWithDistance": true, "supportsSqlExpression": true, "supportsTimeRelation": true, "supportsSqlFormat": false, "supportsQueryAnalytic": false }, "supportsDatumTransformation": true, "dateFieldsTimeReference": null, "preferredTimeReference": null, "datesInUnknownTimezone": false, "hasGeometryProperties": true, "geometryProperties": { "shapeAreaFieldName": "Shape_Area", "shapeLengthFieldName": "Shape_Length", "units": "esriFeet" }, "hasMetadata": true, "isDataArchived": false, "archivingInfo": { "supportsQueryWithHistoricMoment": false, "startArchivingMoment": -1 }, "supportsCoordinatesQuantization": true, "supportsDynamicLegends": true }