Changes in version 1.3 (2025-09-29) o *The functions that compute IPM using the ranger package have been removed due to incompatibility issues. Changes in version 1.2 (2017-08-09) o *New funtions made by Stefano Nembrini compute IPM with package gbm. Changes in version 1.1.1 (2017-07-28) o *Corrections in the functions that compute IPM for taking into account the possibility of no grown trees. *Submitted to CRAN. Changes in version 1.1 (2017-07-15) o *New funtions made by Stefano Nembrini compute IPM with package ranger. *Small change (the funtion does the same as the previous version) in function prevtree for reading regression trees from randomForest. *Submitted to CRAN. Changes in version 1.0 (2017-05-05) o First package version. o Submitted to CRAN.