{ "currentVersion": 10.91, "id": 3, "name": "OutputArea2001", "type": "Feature Layer", "description": "This dataset shows the 2001 Census Output Areas (OAs). OAs are the smallest geographical unit for which Census data is released, and as a result, they act as the basic \u201cbuilding-blocks\u201d for the creation of other \u201chigher\u201d geographies, eg Datazones, council areas. The OAs are constructed by aggregating together a small number of postcodes. Because the OAs cover small areas and contain relatively small numbers of households and population (households in the range 20 to 77; population >/= 50), there is only a limited amount of Census data that can be released without infringing confidentiality.\n\nEach OA is assigned to an area in a \u2018higher\u2019 geography by first selecting one of the postcodes in the OA as a \u2018master\u2019 postcode. The OA inherits all the characteristics of the master postcode including its assignment to higher areas and its centroid grid reference. The master postcode is the postcode with the grid reference closest to the centre of the OA weighted by census household.\n\nThere are 42,604 Census 2001 OAs in Scotland.", "geometryType": "esriGeometryPolygon", "sourceSpatialReference": { "wkid": 27700, "latestWkid": 27700 }, "copyrightText": "National Records of Scotland", "parentLayer": null, "subLayers": [], "minScale": 24000, "maxScale": 0, "drawingInfo": { "renderer": { "type": "simple", "symbol": { "type": "esriSFS", "style": "esriSFSSolid", "color": [ 252, 214, 197, 255 ], "outline": { "type": "esriSLS", "style": "esriSLSSolid", "color": [ 110, 110, 110, 255 ], "width": 0.4 } }, "label": "", "description": "" }, "transparency": 0, "labelingInfo": null }, "defaultVisibility": true, "extent": { "xmin": 54455.17100000009, "ymin": 530297, "xmax": 469467.7170000002, "ymax": 1218557.7400000002, "spatialReference": { "wkid": 27700, "latestWkid": 27700 } }, "hasAttachments": false, "htmlPopupType": "esriServerHTMLPopupTypeAsHTMLText", "displayField": "tag", "typeIdField": null, "subtypeFieldName": null, "subtypeField": null, "defaultSubtypeCode": null, "fields": [ { "name": "objectid", "type": "esriFieldTypeOID", "alias": "OBJECTID", "domain": null }, { "name": "tag", "type": "esriFieldTypeString", "alias": "TAG", "length": 32, "domain": null }, { "name": "shape", "type": "esriFieldTypeGeometry", "alias": "Shape", "domain": null }, { "name": "st_area(shape)", "type": "esriFieldTypeDouble", "alias": "st_area(shape)", "domain": null }, { "name": "st_length(shape)", "type": "esriFieldTypeDouble", "alias": "st_length(shape)", "domain": null } ], "geometryField": { "name": "shape", "type": "esriFieldTypeGeometry", "alias": "Shape" }, "indexes": [ { "name": "r22_sde_rowid_uk", "fields": "objectid", "isAscending": true, "isUnique": true, "description": "" }, { "name": "a11_ix1", "fields": "shape", "isAscending": true, "isUnique": true, "description": "" } ], "subtypes": [], "relationships": [], "canModifyLayer": true, "canScaleSymbols": false, "hasLabels": false, "capabilities": "Map,Query,Data", "maxRecordCount": 1000, "supportsStatistics": true, "supportsAdvancedQueries": true, "supportedQueryFormats": "JSON, geoJSON", "isDataVersioned": false, "ownershipBasedAccessControlForFeatures": {"allowOthersToQuery": true}, "useStandardizedQueries": true, "advancedQueryCapabilities": { "useStandardizedQueries": true, "supportsStatistics": true, "supportsHavingClause": true, "supportsCountDistinct": true, "supportsOrderBy": true, "supportsDistinct": true, "supportsPagination": true, "supportsTrueCurve": true, "supportsReturningQueryExtent": true, "supportsQueryWithDistance": true, "supportsSqlExpression": true }, "supportsDatumTransformation": true, "hasGeometryProperties": true, "geometryProperties": { "shapeAreaFieldName": "st_area(shape)", "shapeLengthFieldName": "st_length(shape)", "units": "esriMeters" }, "dateFieldsTimeReference": null, "supportsCoordinatesQuantization": true }