Implements a systematic methodology for estimating population density from point-centered quarter method (PCQM) surveys when distance measurements are truncated by a maximum search radius (right-censored). The package provides a unified framework for analyzing such incomplete data, addressing both completely randomly distributed (Poisson) and spatially aggregated (Negative Binomial) populations. Key features include: (1) Adjusted moment-based density estimators for censored distances; (2) Maximum likelihood estimation (MLE) of density under the Poisson (CSR) model; and (3) Simultaneous MLE of density and an aggregation parameter under the Negative Binomial model. For more details, see Huang, Shen, Xing, and Zhao (2026) <doi:10.48550/arXiv.2603.08276>.
| Version: | 0.1.2 |
| Depends: | R (≥ 3.5.0) |
| Suggests: | testthat (≥ 3.0.0), dplyr (≥ 1.1.0) |
| Published: | 2026-03-27 |
| DOI: | 10.32614/CRAN.package.TruncatedPCQM |
| Author: | Wenzhe Huang [aut, cre], Guochun Shen [aut], Dingliang Xing [aut], Jiangyan Zhao [aut] |
| Maintainer: | Wenzhe Huang <51280155097 at stu.ecnu.edu.cn> |
| BugReports: | https://github.com/rcjhrpyt-droid/TruncatedPCQM/issues |
| License: | GPL (≥ 3) |
| URL: | https://github.com/rcjhrpyt-droid/TruncatedPCQM |
| NeedsCompilation: | no |
| Language: | en |
| Materials: | README |
| CRAN checks: | TruncatedPCQM results |
| Reference manual: | TruncatedPCQM.html , TruncatedPCQM.pdf |
| Package source: | TruncatedPCQM_0.1.2.tar.gz |
| Windows binaries: | r-devel: TruncatedPCQM_0.1.2.zip, r-release: TruncatedPCQM_0.1.2.zip, r-oldrel: TruncatedPCQM_0.1.2.zip |
| macOS binaries: | r-release (arm64): TruncatedPCQM_0.1.2.tgz, r-oldrel (arm64): not available, r-release (x86_64): TruncatedPCQM_0.1.2.tgz, r-oldrel (x86_64): TruncatedPCQM_0.1.2.tgz |
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