FitVerse: Parametric Distribution Fitting and Analysis
Provides a unified, user-friendly interface for fitting parametric
probability distributions to continuous univariate data. 'FitVerse' supports
52 distribution families spanning symmetric, right-skewed, heavy-tailed,
bounded, and extreme-value shapes, and three estimation methods: Maximum
Likelihood Estimation (MLE), Method of Moments (MOM), and L-Moments (L-MOM).
Automatic best-fit selection is performed using AIC, BIC, and goodness-of-fit
tests (Kolmogorov-Smirnov, Anderson-Darling, Cramer-von Mises (CvM)). Every
fitted model produces a publication-quality diagnostic plot: a histogram
overlaid with the fitted density curve and the estimated PDF formula annotated
directly on the figure. An optional interactive version is produced via
'plotly'. Additional tools include bootstrap confidence intervals for parameter
estimates and return levels, batch fitting across multiple columns for
automated workflows and web-upload use cases, JSON serialisation for
integration with 'Shiny' web applications, and automated HTML/PDF report
generation. 'FitVerse' is designed to support data characterisation in
survey sampling, hydrology, and actuarial workflows, where identifying
the underlying distribution of a variable is a prerequisite for
downstream modelling and inference.
L-moment estimation follows Hosking (1990) <doi:10.1111/j.2517-6161.1990.tb01775.x>
and Hosking and Wallis (1997, ISBN:9780521430456).
Model selection via AIC follows Akaike (1974) <doi:10.1109/TAC.1974.1100705>
and via BIC follows Schwarz (1978) <doi:10.1214/aos/1176344136>.
Bootstrap confidence intervals follow Efron and Hastie (2016,
ISBN:9781107149892).
| Version: |
1.0-2 |
| Depends: |
R (≥ 4.1.0) |
| Imports: |
stats, graphics, grDevices, utils, tools, actuar (≥ 3.1.0), mc2d (≥ 0.1.18), evd (≥ 2.3.3), sn (≥ 2.1.0), fitdistrplus (≥ 1.1.0), lmomco (≥ 2.3.7), ggplot2 (≥ 3.4.0), goftest (≥
1.2.3), gridExtra (≥ 2.3) |
| Suggests: |
shiny (≥ 1.7.0), bslib (≥ 0.5.0), DT, plotly (≥ 4.10.0), testthat (≥ 3.0.0), knitr (≥ 1.40), rmarkdown (≥ 2.20), kableExtra, jsonlite (≥ 1.8.0), base64enc, MASS, GeneralizedHyperbolic, truncnorm |
| Published: |
2026-09-06 |
| DOI: |
10.32614/CRAN.package.FitVerse |
| Author: |
Karuna G. Reddy 
[aut, cre],
M. G. M. Khan [aut] |
| Maintainer: |
Karuna G. Reddy <karuna.reddy at auckland.ac.nz> |
| License: |
GPL (≥ 3) |
| NeedsCompilation: |
no |
| CRAN checks: |
FitVerse results |
Documentation:
Downloads:
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