Package: secr Type: Package Title: Spatially Explicit Capture-Recapture Version: 5.5.0 Date: 2026-07-02 Description: 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. Authors@R: c(person("Murray", "Efford", email = "murray.efford@otago.ac.nz", role = c("aut","cre"), comment = c(ORCID = "0000-0001-5231-5184")), person("Philipp", "Jund", role = "ctb", comment = "faster transect search and spacing"), person("David", "Fletcher", role = "ctb", comment = "overdispersion"), person("Yan Ru", "Choo", role = "ctb", comment = c(ORCID = "0000-0002-8852-7178", "goodness-of-fit")) ) Depends: R (>= 3.5.0), methods Imports: secrfunc (>= 1.1.2), abind, graphics, grDevices, MASS, mgcv, mvtnorm, nlme, parallel, raster (>= 3.5-15), Rcpp (>= 0.12.14), RcppParallel (>= 5.1.1), sf, stats, stringr, terra (>= 1.5-12), tools, utils Suggests: gdistance, igraph, knitr, readxl, rmarkdown, sp, spatstat (>= 3.3-3), spatstat.geom, spatstat.random, spcosa, spsurvey (>= 5.3.0), testthat LinkingTo: BH, Rcpp, RcppParallel VignetteBuilder: knitr License: GPL (>= 2) LazyData: yes KeepSource: yes LazyDataCompression: xz SystemRequirements: GNU make URL: https://www.otago.ac.nz/density/, https://github.com/MurrayEfford/secr/ Config/pak/sysreqs: libabsl-dev cmake libgdal-dev gdal-bin libgeos-dev make libicu-dev libssl-dev libproj-dev libsqlite3-dev libudunits2-dev Repository: https://murrayefford.r-universe.dev Date/Publication: 2026-07-04 10:30:06 UTC RemoteUrl: https://github.com/MurrayEfford/secr RemoteRef: HEAD RemoteSha: 1723b470379a2d1791958470e5828a2d4e8ac19c NeedsCompilation: yes Packaged: 2026-07-04 11:28:17 UTC; root Author: Murray Efford [aut, cre] (ORCID: ), Philipp Jund [ctb] (faster transect search and spacing), David Fletcher [ctb] (overdispersion), Yan Ru Choo [ctb] (ORCID: , goodness-of-fit) Maintainer: Murray Efford