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# CITATION.cff file created with {cffr} R package
# See also: https://docs.ropensci.org/cffr/
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cff-version: 1.2.0
message: 'To cite package "Dcurvature" in publications use:'
type: software
license: MIT
title: 'Dcurvature: Discrete Curvature with ''shiny'' Explorer'
version: 0.0.4
doi: 10.32614/CRAN.package.Dcurvature
abstract: 'Implements discrete curvature estimation for ordered planar point sequences
  using circumcenter geometry on consecutive triplets, exposed through compiled C
  plus plus (C++) code via ''Rcpp'' for speed and numerical robustness. The package
  is useful for objective elbow detection in multivariate workflows, especially principal
  component analysis (PCA), where selecting the number of retained components can
  be subjective. It provides a ''shiny'' interface that supports upload of raw datasets
  or explained-variance tables, computes Kaiser-Meyer-Olkin (KMO) sampling-adequacy
  diagnostics, evaluates individual and cumulative variance curves, and reports curvature-
  based decision rules (m* and m**) with visual summaries for reproducible component-selection
  decisions. References: Arney et al. (2001); Axler (2024) <https://doi.org/10.1007/978-3-031-41026-0>;
  Bjorklund (2019) <https://doi.org/10.1111/evo.13835>; Burden and Faires (2015);
  Chang et al. (2023) <https://CRAN.R-project.org/package=shiny>; Christensen (2019);
  Cui (2020) <https://doi.org/10.18637/jss.v040.i08>; Eddelbuettel and Sanderson (2014)
  <https://doi.org/10.1016/j.csda.2013.02.005>; Engelke et al. (2023) <https://doi.org/10.1016/j.jseint.2023.04.010>;
  Gniazdowski (2021) <https://doi.org/10.26348/znwwsi.24.35>; Haynes et al. (2017);
  Jameel and Al-Salami (2023) <https://doi.org/10.24086/cuejhss.v7n1y2023.pp121-125>;
  Jolliffe (2002); Jolliffe and Cadima (2016) <https://doi.org/10.1098/rsta.2015.0202>;
  Kaiser (1974); Lehnert et al. (2019) <https://doi.org/10.18637/jss.v089.i12>; Ma
  and Dai (2011) <https://doi.org/10.1093/bib/bbq090>; Milligan (1995); Onumanyi et
  al. (2022) <https://doi.org/10.3390/app12157515>; Park (2010); Revelle (2024) <https://CRAN.R-project.org/package=psych>;
  Rodionova et al. (2021) <https://doi.org/10.1016/j.chemolab.2021.104304>; Sen and
  Cohen (2025) <https://doi.org/10.1177/01466216251344288>; Serneels and Verdonck
  (2008) <https://doi.org/10.1016/j.csda.2007.05.024>; Shi et al. (2021) <https://doi.org/10.1186/s13638-021-01910-w>;
  Shaukat et al. (2016) <https://doi.org/10.1515/eko-2016-0014>; Syakur et al. (2018)
  <https://doi.org/10.1088/1757-899X/336/1/012017>; Wickham and Bryan (2023) <https://CRAN.R-project.org/package=readxl>;
  Wu et al. (2017) <https://doi.org/10.1088/1755-1315/61/1/012054>; Youssef et al.
  (2023) <https://doi.org/10.21303/2461-4262.2023.002582>.'
authors:
- family-names: Darghan
  given-names: Aquiles
  email: aqedarghanco@unal.edu.co
- family-names: Jola
  given-names: Jorge
  email: jjolaher@purdue.edu
repository: https://cran.r-universe.dev
commit: 6c6a62e25a22a97aa5af9e4324dc2948e11ec4fc
date-released: '2026-07-20'
contact:
- family-names: Jola
  given-names: Jorge
  email: jjolaher@purdue.edu