Functions to estimate the density and size of a spatially distributed animal population sampled with an array of passive detectors, such as traps, or by searching polygons or transects. Models incorporating distance-dependent detection are fitted by maximizing the likelihood. Tools are included for data manipulation and model selection.
Version: 5.2.4 Depends: R (≥ 3.5.0), methods Imports: abind, graphics, grDevices, MASS, mgcv, mvtnorm, nlme, parallel, raster (≥ 3.5-15), Rcpp (≥ 0.12.14), RcppNumerical, RcppParallel (≥ 5.1.1), sf, stats, stringr, terra (≥ 1.5-12), tools, utils LinkingTo: BH, Rcpp, RcppEigen, RcppNumerical, RcppParallel Suggests: gdistance, igraph, knitr, readxl, rmarkdown, sp, spatstat (≥ 3.3-3), spatstat.geom, spatstat.random, spcosa, spsurvey (≥ 5.3.0), testthat Published: 2025-06-13 DOI: 10.32614/CRAN.package.secr Author: Murray Efford [aut, cre], Philipp Jund [ctb] (faster transect search and spacing), David Fletcher [ctb] (overdispersion), Yan Ru Choo [ctb] (goodness-of-fit) Maintainer: Murray Efford <murray.efford at otago.ac.nz> License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] URL: https://www.otago.ac.nz/density/, https://github.com/MurrayEfford/secr/ NeedsCompilation: yes SystemRequirements: GNU make Citation: secr citation info Materials: NEWS In views: Environmetrics CRAN checks: secr results Documentation: Downloads: Reverse dependencies: Linking:Please use the canonical form https://CRAN.R-project.org/package=secr to link to this page.
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