Description Details Author(s) References Examples
The package can (1) perform loop analysis (van Groenendael et al., 1994) in demographic analysis in ecology, which employed the decomposition algorithm of directed weighted graphs persented in Su and Wang (2007); (2) find food web patterns, including longest food chain, largest-weighted food chain, enumeration of all food chains linked to the proposed species in the food network; (3) plot directed/undirected network structure using flexible methods; (4) other statistics, like minimum spanning tree etc. Next version will include more statistics on food web structure
Package: | loop |
Type: | Package |
Version: | 1.0 |
Date: | 2012-06-22 |
License: | GPL-2 |
LazyLoad: | yes |
Youhua Chen Maintainer: Youhua Chen <haydi@126.com>
van Groenendael J, de Kroon H, Kalisz S, Tuljapurkar S (1994) Loop analysis: evaluating life history pathways in population projection matrices. Ecology, 75, 2410-2415.
Sun L, Wang M (2007) An algorithm for a decomposition of weighted digraphs: with applications to life cycle analysis in Ecology. Journal of Mathematical Biology, 54, 199-226.
Wang HY, Huang Q, Li CZ,Zhu BZ (2010) Graph algorithms and Matlab applications. BUAA Press, Beijing.
Chen Y (2012) loop: an R package for performing decomposition of weighted directed graphs, food web analysis and flexible network plotting. Submitted.
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