[R-pkgs] adehabitat version 1.7
calenge at biomserv.univ-lyon1.fr
Mon Sep 3 09:31:47 CEST 2007
I have uploaded to CRAN the version 1.7 of the package 'adehabitat'.
Significant changes are listed below:
* The Brownian bridge kernel estimation algorithm has been greatly
improved. It now takes more than 80% less time than the previous
version. A new function "liker" has also been added, which estimates the
one of the two smoothing parameters of the bridge kernel using a maximum
likelihood approach (recommended in Horn et al., Ecology, in press).
Examples of the help page demonstrate the use and interest of this
function. Comparison between kernelbb and the Visual basic algorithm
provided in the paper of Horn et al. returned consistent results.
* The function kernelUD has also been improved. It now takes more than
50% less time than the previous version. In addition the "grid" argument
of this function, now also allows a list of objects of class "asc" to be
passed as grid where the UD should be estimated.
LBBE - UMR CNRS 5558 - Université Claude Bernard Lyon 1 - FRANCE
tel. (+33) 04.72.43.27.57
fax. (+33) 04.72.43.13.88
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