Output Area (2011) to PCON (2011) to EER (December 2011) Best Fit Lookup in EW

A best-fit lookup between Output Areas (OA), Westminster parliamentary constituencies and European electoral regions (EER) as at 31 December 2011 in England and Wales. A ‘best-fit percentage’ indicator has been included in this lookup, to support an understanding of the actual relationship between the OA and the higher geography to which it has been best-fitted. This ‘best-fit percentage' indicator has been calculated by working out the percentage of the OA population that falls exactly within the output geography. This is calculated by plotting the grid references of the households into the output geography and aggregating the population that actually falls within the best-fitted geography. Only the higher geography to which the OA has been allocated will be given a percentage match. The other higher geographies that the OA shares its population with are not included in the best-fit lookup, and so will not be given a ‘best-fit percentage' indicator. The only exception to this will be those higher geographies, designated as having a ‘small population’. These are certain geographies that are smaller than an OA and therefore do not contain an OA population weighted centroid. For completeness of coverage, these geographies are included in the lookup based on a manual allocation of an OA to the geography, and will therefore also be given a percentage match of the OA population to the geography. Due to the nature of the OA design, and administrative area realignment, there are some OA which have low or no population in the higher geography to which they have been allocated. This is the result of the distribution of the population within certain OA, but they should still be allocated to higher geographies based on their population weighted centroid, in line with the Geography Policy for National Statistics and to keep the methodology for the production of best-fitted statistics consistent. (File Size 11.6MB). Field Names – OA11CD, PCON11CD, PCON11NM, PCON11NMW, OA11PERCENT, EER11CD, EER11NM, EER11NMW Field Types – Text, Text, Text, Text, Text, Text, Text, Text Field Lengths – 9, 9, 43, 43, 3, 9, 24, 24 REST URL of Feature Access Service – https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/OA11_PCON11_EER11_EW_LU_529f687ffa0e4f408c9968ae92435e8c/FeatureServer本数据集为2011年12月31日英格兰与威尔士范围内，产出区域（Output Areas, OA）、威斯敏斯特议会选区与欧洲选举区域（European electoral regions, EER）之间的最佳匹配对照表。本对照表附带“最佳匹配百分比”指标，用于辅助厘清产出区域与其最佳匹配的更高层级地理单元之间的实际对应关系。该“最佳匹配百分比”指标通过统计恰好处于目标输出地理单元内的产出区域人口占比计算得出，具体实现方式为将家庭的网格坐标映射至对应输出地理单元，再汇总实际处于最佳匹配地理单元内的人口数量。仅已分配给该产出区域的更高层级地理单元会被赋予匹配百分比，该产出区域共享人口的其他更高层级地理单元不会纳入本对照表，因此不会获得“最佳匹配百分比”指标。本规则的唯一例外为被标记为“小人口”的更高层级地理单元：此类地理单元的规模小于产出区域，因此未包含产出区域的人口加权质心。为保证覆盖范围的完整性，此类地理单元将通过人工方式将产出区域分配至对应地理单元，并同样赋予该产出区域人口与该地理单元的匹配百分比。受产出区域设计特性与行政区调整的影响，部分产出区域在其被分配的更高层级地理单元内仅拥有极少人口或无人口。此类情况源于特定产出区域内的人口分布，但依据国家统计署地理政策，此类产出区域仍应基于其人口加权质心分配至更高层级地理单元，以确保最佳匹配统计数据的生成方法保持统一。（文件大小：11.6MB）。字段名称依次为：OA11CD、PCON11CD、PCON11NM、PCON11NMW、OA11PERCENT、EER11CD、EER11NM、EER11NMW。字段类型均为文本型。字段长度分别为：9、9、43、43、3、9、24、24。要素访问服务的REST URL为：https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/OA11_PCON11_EER11_EW_LU_529f687ffa0e4f408c9968ae92435e8c/FeatureServer