TruncatedPCQM: Density Estimation for Point-Centered Quarter Method with Truncated Sampling

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

Documentation:

Reference manual:

TruncatedPCQM.html , TruncatedPCQM.pdf

Downloads:

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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