A wrapper of different standard estimation methods for gravity models. 
  This package provides estimation methods for log-log models and multiplicative models.
| Version: | 1.1 | 
| Depends: | R (≥ 3.4.0) | 
| Imports: | lmtest, sandwich, glm2, MASS, stats, censReg, survival, multiwayvcov, tibble, magrittr, dplyr, tidyr, purrr, rlang, Rdpack, utils | 
| Suggests: | knitr, rmarkdown, testthat, broom | 
| Published: | 2023-05-02 | 
| DOI: | 10.32614/CRAN.package.gravity | 
| Author: | Anna-Lena Woelwer [aut, cph],
  Jan Pablo Burgard [aut, cph],
  Joshua Kunst [aut, cph],
  Mauricio Vargas  [aut, cre, cph],
  Romain Francois [ctb] (adapted parts of the code to use dplyr 0.8.0),
  Lionel Henry [ctb] (simplified parts of the code),
  Sarah Johnson [ctb] (improved the double demeaning function),
  Hrisyana Doytchinova [rev] (sent us different suggestions and bug
    reports) | 
| Maintainer: | Mauricio Vargas  <m.sepulveda at mail.utoronto.ca> | 
| BugReports: | https://github.com/pachadotdev/gravity/issues/ | 
| License: | Apache License (≥ 2) | 
| URL: | https://pacha.dev/gravity/ | 
| NeedsCompilation: | no | 
| Materials: | NEWS | 
| In views: | Econometrics | 
| CRAN checks: | gravity results |