On Tracking and Disaggregating Center Points of Population

Autor:	David A. Plane, Peter A. Rogerson
Rok vydání:	2015
Předmět:	education.field_of_study Geography Planning and Development Aggregate (data warehouse) Population Census Discount points Great circle Geography Population growth Center (algebra and category theory) Geographic coordinate system education Cartography Earth-Surface Processes
Zdroj:	Annals of the Association of American Geographers. 105:968-986
ISSN:	1467-8306 0004-5608
DOI:	10.1080/00045608.2015.1066742
Popis:	In this article we explore methods for tracking and disaggregating five alternately defined mean and median center points of population, measures that can help in interpreting the forces underlying shifting settlement patterns. We argue that the point that minimizes the sum of squared great circle distances is more conceptually appealing than the center point located via the method currently employed by the U.S. Census Bureau. We also suggest that the point of minimum aggregate distance—as deployed in many other geographic applications—provides an interesting alternative to the median center historically used in population analysis, which is the crossing point of the medial lines of latitude and longitude. We then propose methods to disaggregate any of the alternatively defined center points into multiple points useful for tracking and comparing the relative influences of each of the components of population change: births, deaths, domestic (or internal) migration, and immigration. Similarly, we track and...
Databáze:	OpenAIRE
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