cndplantanalysis: Compositional Nutrient Diagnosis for Plant Tissue Analysis

Provides an implementation of Compositional Nutrient Diagnosis (CND) for plant tissue tests. Computes scale invariant simplex filling values(Rd), row-centered log-ratios (CLR), iterative database partitioning via Cate-Nelson procedures, cubic polynomial regression of cumulative variance ratio functions to determine inflection point yield cutoffs, critical CND nutrient imbalance thresholds (r^2) using the chi-square distribution, diagnostic standardized indices (Ix) and automated Cate Nelson scatter partitioning. Includes linear, non-linear, cumulative variance, chi-square and quadrant plotting functions.Methodology and theoretical frameworks are grounded in Parent and Dafir (1992) <doi:10.21273/JASHS.117.2.239> and Khiari et al. (2001) <doi:10.2134/agronj2001.934802x>.

Version:	1.0.2
Depends:	R (≥ 3.5)
Imports:	ggplot2, graphics, utils, stats
Suggests:	readxl, testthat (≥ 3.0.0)
Published:	2026-10-21
DOI:	10.32614/CRAN.package.cndplantanalysis (may not be active yet)
Author:	Blesson B. Varghese [aut, cre], Rohith A K [aut], Anjali S. [aut], Aliya Shirin K S [aut], Hilal Mohamed [aut]
Maintainer:	Blesson B. Varghese <blessonvarghese1234 at gmail.com>
License:	GPL-3
NeedsCompilation:	no
Materials:	README
CRAN checks:	cndplantanalysis results

Documentation:

Reference manual:

cndplantanalysis.html , cndplantanalysis.pdf

Downloads:

Package source:	cndplantanalysis_1.0.2.tar.gz
Windows binaries:	r-devel: not available, r-release: not available, r-oldrel: not available
macOS binaries:	r-release (arm64): cndplantanalysis_1.0.2.tgz, r-oldrel (arm64): cndplantanalysis_1.0.2.tgz, r-release (x86_64): cndplantanalysis_1.0.2.tgz, r-oldrel (x86_64): cndplantanalysis_1.0.2.tgz

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