This package is considered a duplicate. The official version of this package is found at:https://jmcurran.r-universe.dev/fitPS

Package: fitPS 1.0.6

James Curran

fitPS: Fit Zeta Distributions to Forensic Data

Fits Zeta distributions (discrete power laws) to data that arises from forensic surveys of clothing on the presence of glass and paint in various populations. The general method is described to some extent in Coulson, S.A., Buckleton, J.S., Gummer, A.B., and Triggs, C.M. (2001) <doi:10.1016/S1355-0306(01)71847-3>, although the implementation differs.

Authors:James Curran [aut, cre]

fitPS_1.0.6.tar.gz
fitPS_1.0.6.tar.gz(r-4.7-any)fitPS_1.0.6.tar.gz(r-4.6-any)
fitPS_1.0.6.tgz(r-4.6-emscripten)
manual.pdf |manual.html✨
card.svg |card.png
fitPS/json (API)
NEWS

# Install 'fitPS' in R:

install.packages('fitPS', repos = c('https://cran.r-universe.dev', 'https://cloud.r-project.org'))

Bug tracker:https://github.com/jmcurran/fitps/issues

Datasets:

Psurveys - Number of Groups of Glass Data
Ssurveys - Size of Groups of Glass Data

On CRAN:

3.00 score 10 scripts 236 downloads 25 exports 90 dependencies

Last updated from:23c1e99400. Checks:2 WARNING, 2 OK. Indexed: no.

Target	Result	Time
linux-devel-x86_64	WARNING	168
source / vignettes	OK	209
linux-release-x86_64	WARNING	190
wasm-release	OK	130

Exports:add bootCI compareSurveys compareSurveysLRT createPSData credint credInt fitdist fitDist fitlogdist fitlogDist fitLogdist fitzidist fitZIdist fitZIDist makeData makePrior makePSData plotPosterior probfun readData rzeta rzizeta rZIzeta var

Dependencies:backports base64enc bslib cachem cellranger checkmate cli cluster codetools colorspace cpp11 crayon data.table digest doParallel dplyr evaluate farver fastmap FNN fontawesome foreach foreign Formula fs generics ggplot2 glue gridExtra gtable highr Hmisc hms htmlTable htmltools htmlwidgets isoband iterators jquerylib jsonlite kernlab KernSmooth knitr ks labeling lattice lifecycle magrittr Matrix mclust memoise mgcv mime multicool mvtnorm nlme nnet pbapply pillar pkgconfig pracma prettyunits progress R6 rappdirs rbibutils RColorBrewer Rcpp Rdpack readxl rematch rlang rmarkdown rpart rstudioapi S7 sass scales stringi stringr tibble tidyselect tinytex utf8 vctrs VGAM viridisLite withr xfun yaml

Fitting a zeta distribution to a P survey: number of groups data

Rendered fromexamples.Rmdusingknitr::rmarkdownon Jun 11 2026.

Last update: 2026-06-10
Started: 2026-06-10

Using fitPS to fit number of groups data

Rendered fromsimple_P_fit.Rmdusingknitr::rmarkdownon Jun 11 2026.

Last update: 2026-06-10
Started: 2023-03-18

Citation

Readme and manuals

Help Manual

Help page	Topics
S3 method for objects of class 'psData'	==.psData
Add data to a psData object	add
Converts an object of class 'psData' to a 'data.frame'	as.data.frame.psData
Bootstrap confidence intervals or regions	bootCI bootCI.default bootCI.psData bootCI.psFit
Compare two surveys on the basis of their shape parameters	comp.survs compare.surveys compareSurveys compareSurveys.default compareSurveys.psData compareSurveys.psFit
Compare two or more surveys on the basis of their shape parameters using a Likelihood Ratio Test	compareSurveysLRT
S3 confint method for objects of class psFit	confint.psFit
Bayesian credible intervals or regions	credInt credint
Fit a Zeta Distribution to Forensic Data	fitDist fitdist
S3 fitted method for an object of class 'psFit'	fitted.psFit
Fit a Zero-Inflated Zeta Distribution to Forensic Data	fitZIDist fitZIdist fitzidist
Extract the log-likelihood from a zeta model fit	logLik.psFit
Define a prior density	makePrior
Create a survey data set manually	createPSData makeData makePSData
An S3 method for computing the mean of clothing survey for the number of groups or size of groups	mean.psData
S3 plot method for an object of class 'psFit'	plot.psFit
Plot a posterior density for a fitted power-series model	plotPosterior
S3 predict method for an object of class 'psFit'	predict.psFit
S3 print method for an object of class 'psData'	print.psData
S3 print method for an object of class 'psFit'	print.psFit
Probability Functions	probfun
Number of Groups of Glass Data	Psurveys
Read count data from file	readData
Generate random variates from a zeta distribution	rzeta
Generate zero inflated zeta random variates	rZIzeta rzizeta
Size of Groups of Glass Data	Ssurveys
S3 summary method for an object of class 'psFit'	summary.psFit
Variance generic	var
An S3 method for computing the variance of clothing survey for the number of groups or size of groups	var.psData