Output Area (2011) to PCON (2011) to EER (December 2011) Best Fit Lookup in EW
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<span style='font-size: 17px; font-family: "Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", Helvetica, Arial, sans-serif !important;'>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. </span><div style='font-size: 17px; font-family: "Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", Helvetica, Arial, sans-serif !important;'><span><br /></span></div><div style='font-size: 17px; font-family: "Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", Helvetica, Arial, sans-serif !important;'><span>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).</span></div><div style='font-size: 17px; font-family: "Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", Helvetica, Arial, sans-serif !important;'><span><p style='margin-bottom:0cm;margin-bottom:.0001pt;line-height: normal'><span style='font-size: 11.5pt; font-family: Helvetica, sans-serif;'>Field Names – OA11CD, PCON11CD, PCON11NM, PCON11NMW, OA11PERCENT, EER11CD, EER11NM, EER11NMW</span></p> <p style='margin-bottom:0cm;margin-bottom:.0001pt;line-height: normal'><span style='font-size: 11.5pt; font-family: Helvetica, sans-serif;'>Field Types – Text, Text, Text, Text, </span><span style='font-family: Helvetica, sans-serif; font-size: 15.3333px;'>Text, Text, Text, Text</span></p> <p style='margin-bottom:0cm;margin-bottom:.0001pt;line-height: normal'><span style='font-size: 11.5pt; font-family: Helvetica, sans-serif;'>Field Lengths – 9, 9, 43, 43, 3, 9, 24, 24</span></p></span></div><div><br /></div><div><div></div></div><div><br /></div><div><div>REST URL of Feature Access Service – <a href='https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/OA11_PCON11_EER11_EW_LU_529f687ffa0e4f408c9968ae92435e8c/FeatureServer' target='_blank' rel='nofollow ugc noopener noreferrer'>https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/OA11_PCON11_EER11_EW_LU_529f687ffa0e4f408c9968ae92435e8c/FeatureServer</a></div></div>
本数据集为2011年12月31日英格兰与威尔士地区的输出区域（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。 本匹配对照表中包含了「最佳匹配百分比（best-fit percentage）」指标，用于辅助理解输出区域与其最佳匹配上级地理区域间的实际对应关系。该指标通过计算恰好落在目标输出地理范围内的输出区域人口占比得出：具体操作为将住户的网格坐标投影至目标输出地理范围中，汇总实际处于最佳匹配地理范围内的人口数。仅输出区域所归属的上级地理区域会被赋予匹配百分比；输出区域共享人口的其他上级地理区域则不会纳入本最佳匹配对照表，因此不会获得「最佳匹配百分比」指标。唯一例外为被标记为「小人口」的上级地理区域：这类地理区域的范围小于输出区域，因此不包含输出区域的人口加权质心。为保证覆盖完整性，本对照表将通过人工方式将输出区域匹配至这类地理区域，因此此类地理区域也会被赋予输出区域人口与该地理区域的匹配百分比。由于输出区域的设计特性与行政区划调整，部分输出区域在所归属的上级地理区域内仅拥有少量或无人口：这源于特定输出区域内的人口分布情况，但根据英国国家统计地理政策，此类输出区域仍应基于其人口加权质心归属至上级地理区域，以确保最佳匹配统计数据生成方法的一致性。（文件大小：11.6MB） ### 字段名称 OA11CD、PCON11CD、PCON11NM、PCON11NMW、OA11PERCENT、EER11CD、EER11NM、EER11NMW ### 字段类型 文本、文本、文本、文本、文本、文本、文本、文本 ### 字段长度 9、9、43、43、3、9、24、24 要素访问服务的REST URL：https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/OA11_PCON11_EER11_EW_LU_529f687ffa0e4f408c9968ae92435e8c/FeatureServer
