Flexible Framework for Developing Spatial Interaction Models R package simodels version 0.2.0 Develop spatial interaction models (SIMs). SIMs predict the amount of interaction, for example number of trips per day, between geographic entities representing trip origins and destinations. Contains functions for creating origin-destination datasets from geographic input datasets and calculating movement between origin-destination pairs with constrained, production-constrained, and attraction-constrained models (Wilson 1979) <doi:10.1068/a030001>. Software Depends: R (>= 2.10) Imports: dplyr, geodist, od (>= 0.5.1), rlang, sf Suggests: ggplot2, knitr, minpack.lm, nngeo, rmarkdown, tmap Robin Lovelace <rob00x@gmail.com> Comprehensive R Archive Network (CRAN) Robin Lovelace [aut, cre] (ORCID: <https://orcid.org/0000-0001-5679-6536>), Jakub Nowosad [aut] (ORCID: <https://orcid.org/0000-0002-1057-3721>) AGPL (>= 3) 2024-08-22 application/tgz https://CRAN.R-project.org/package=simodels doi:10.32614/CRAN.package.simodels