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: | 5.3.0 |
| 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: | 2025-09-27 |
| 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 |