This is an add-on package to gamlss which supports truncated distributions in Generalized Additive Models for Location Scale and Shape.
The main function gen.trun() generates truncated version of an existing gamlss family distribution.
CRAN package: https://CRAN.R-project.org/package=gamlss.tr
GitHub repository: https://github.com/gamlss-dev/gamlss.tr/
Project website: https://www.gamlss.com/