An exploratory method for detecting multi-level clumps in the distribution of points – a computational tool, VCM (variable clumping method)

Atsuyuki Okabe and Shino Funamoto
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Atsuyuki Okabe: Center for Spatial Information ScienceUniversity of Tokyo, 7-3-1 Hong, Bunkyo-ku, Tokyo 113-8656, Japan
Shino Funamoto: Department of Urban Engineering University of Tokyo, 7-3-1 Hong, Bunkyo-ku, Tokyo 113-8656, Japan (e-mail: atsu@okabe.t.u-tokyo.ac.jp)

Journal of Geographical Systems, 2000, vol. 2, issue 2, 120 pages

Abstract: Abstract. This paper shows an explanatory tool (a FORTRAN program linked to GIS software), called VCM (Variable Clumping Method), for detecting statistically significant `multi-level clumps' in the distribution of points. The multi-level clumps imply a set of clumps whose clumping radius varies from a small radius to a large radius (in spirits, VCM is similar to the K-function method). Compared with the ordinary (fixed radius) clumping method, VCM can detect overall significant clumps in the distribution of points.

Date: 2000
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DOI: 10.1007/PL00011449

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