Mapping overlapping commuting areas
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Date
2009
Publication Type
Report
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yes
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Abstract
This article focuses on mapping and delineation of commuting areas. Commuting distances and the complexity of commuter flows have increased steadily over the years. A reasonable
generalisation for the representation of the commuting areas for different purpose is needed. Different cartographic representations, linear and 2-dimensional, overlapping and
non-overlapping, are discussed. A commuting area describes a 2-dimensional “sphere of influence” of an urban core. Traditional procedures for delimiting these areas assign each municipality
to a single catchment area. One possibility for defining functional areas is the intramax algorithm (FLOWMAP 7.2). This algorithm ignores the overlaps and the differentiation between
incoming and outgoing flows. A classical method of transport planners is mapping of interaction where origin and destination is connected with a straight line. Alternatively, methods are
generating measurable overlapping commuting areas of inflows. Four different stages of, from a morphological to a circular shaped area, are discussed. Additionally, various overlaps between
the catchment areas of centres of equal and unequal rank can be determined.
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published
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Journal / series
Volume
555
Pages / Article No.
1 - 14
Publisher
ETH Zürich, Institut für Verkehrsplanung, Transporttechnik, Strassen- und Eisenbahnbau
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Subject
Commuting areas; Overlaps; Cartography; Generalisation; ETH Zurich; Institute for Transport Planning and Systems (IVT)
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