Package: NRMSampling Type: Package Title: Sampling Design and Estimation Methods for Natural Resource Management Version: 0.2.2 Authors@R: person(given = "Sadikul", family = "Islam", email = "sadikul.islamiasri@gmail.com", role = c("aut", "cre"), comment = c(ORCID = "0000-0003-2924-7122")) Description: Provides functions for probability and non-probability sampling design, sample selection, and population estimation tailored to natural resource management. Probability methods include simple random sampling, stratified sampling, systematic sampling, cluster sampling, and probability-proportional-to-size sampling. Non-probability methods include convenience, judgement-based, and quota sampling. Estimation functions cover means, totals, ratio estimators, regression estimators, and the unequal-probability estimator of Horvitz and Thompson (1952, ) for unequal-probability designs. Utilities support biomass, soil-loss, and carbon-stock estimation from field plots. Spatial extensions provide random, systematic, stratified, and raster-weighted sampling within geographic polygons using the 'sf' and 'terra' packages, with extraction of remote-sensing covariates at sample locations. Applications include forest inventory, soil erosion monitoring, watershed studies, and ecological field surveys. License: GPL (>= 3) Encoding: UTF-8 Language: en-US Depends: R (>= 4.1.0) Imports: stats, utils Suggests: sf (>= 1.0.0), terra (>= 1.7.0), ggplot2 (>= 3.4.0), dplyr (>= 1.1.0), testthat (>= 3.0.0), knitr (>= 1.40), rmarkdown (>= 2.18), covr, spelling VignetteBuilder: knitr RoxygenNote: 7.3.3 Config/testthat/edition: 3 LazyData: true NeedsCompilation: no Packaged: 2026-06-21 08:52:33 UTC; root Author: Sadikul Islam [aut, cre] (ORCID: ) Maintainer: Sadikul Islam Repository: https://cran.r-universe.dev Date/Publication: 2026-04-22 14:13:04 UTC RemoteUrl: https://github.com/cran/NRMSampling RemoteRef: HEAD RemoteSha: e32b325c78f7d48a7db2b795077e2497aa6bfe9b