Projected Actor Locations for Spatial Interaction Modeling R package palsr version 0.1.0 Implements the Projected Actor Locations (PALS) method for spatial modeling of dyadic interactions between geographically mobile actors, as described in Kim, Liu and Desmarais (2023) <doi:10.1017/psrm.2022.6>. PALS applies exponential-smoothing weights to the spatiotemporal histories of a focal actor and its interaction partners ("alters") to project the location of future interactions. The package provides projection, maximum-similarity parameter estimation by minimizing great-circle (Haversine) prediction error, nonparametric bootstrap with multiple-imputation (Rubin's Rules) pooling, dyadic distance covariate construction, visualization, and a simulated example dataset of subnational conflict. Software Depends: R (>= 4.1.0) Imports: Rcpp, stats LinkingTo: Rcpp Suggests: testthat (>= 3.0.0), knitr, rmarkdown, mice, ggplot2 Bruce A. Desmarais <bruce.desmarais@gmail.com> Comprehensive R Archive Network (CRAN) Bruce A. Desmarais [aut, cre], Sangyeon Kim [aut], Howard Liu [aut] MIT + file LICENSE (https://CRAN.R-project.org/package=palsr/LICENSE) 2026-07-01 application/tgz https://CRAN.R-project.org/package=palsr doi:10.32614/CRAN.package.palsr