SECR in R

The R package secr has most of the features of DENSITY and some major new ones:

modelling of density surfaces (inhomogeneous Poisson distribution of home ranges)
flexible formula-based model specification
groups
score tests (these are still experimental)
model averaging
acoustic detection

The R environment offers great advantages for advanced users, including the ability to control details of optimization, batch processing etc.

Two versions are available. secr 1.2.11 is reasonably stable. secr 1.3.0 is a new version that is more likely to contain bugs: please report any difficulties. The features of DENSITY, secr 1.2 and secr 1.3 are compared in an appendix of the overview pdf.

See the links below for the package zip file containing the Windows binary and various pieces of documentation including an overview of secr and a pdf version of the help pages. To install the package under Windows, save the zip file to a local folder and use the menu option "Packages | Install packages(s) from local zip files...". Then remember to load it! You will also need the package abind (use Packages | Install package(s)... to download from CRAN).

The source package (tar.gz file) is needed to install secr on a non-Windows system. Recent versions have been installed successfully on Unix (NetBSD, Solaris) and Mac OS.

secr_1.2.11.zip 1562K
secr_1.2.11.tar.gz 999K

secr_1.3.0.zip 3151K << current Windows binary
secr_1.3.0.tar.gz 1670K

secr-overview.pdf 353K
secr-manual.pdf 718K
secr-sound.pdf 290K

For recent changes: install, load, and type RShowDoc ('NEWS', package='secr') at the R prompt. It's also worth checking the 'FAQ' help page (? FAQ).

Last Updated: 12 March 2010