Zero-Modified Complex 'Tri-Parametric' Pearson Distribution for Overdispersed Count Data R package zmctp version 0.1.0 Implements zero-modified versions of the Complex 'Tri-Parametric' Pearson distribution for overdispersed count data. The package addresses limitations of existing implementations when the parameter b approaches zero. It provides distribution functions, maximum likelihood estimation, and diagnostic tools for modeling count data with excess zeros. The methodology is based on 'Rodriguez-Avi' and coauthors (2003) <doi:10.1007/s00362-002-0134-7>. Software Depends: R (>= 3.5.0) Imports: stats, graphics Suggests: testthat (>= 3.0.0), knitr, rmarkdown, spelling Rasheedat Oladoja <roladoja@ttu.edu> Comprehensive R Archive Network (CRAN) Rasheedat Oladoja [aut, cre] (ORCID: <https://orcid.org/0009-0001-5883-8039>) GPL-3 2026-04-03 application/tgz https://CRAN.R-project.org/package=zmctp doi:10.32614/CRAN.package.zmctp en-US