Alana Lutz and Andrew Atallah worked in parallel during the Fall 2023 semester of *Open GIScience* at Middlebury College to reproduce the cost surface in this study using R, whereas the original cost surface was created in QGIS Graphic Modeler. They managed to produce nearly identical results, with small discrepencies rooted in the conversion from vector data formats to raster data formats. The original model used GDAL's "[all touched][1]" option to rasterize vector data, and that option could likely be implemented in R as well. Find Andy Atallah's version of the work here: - blog post: https://andya17.github.io/blog/project/ - repository: https://github.com/andya17/geog323-wildlife-corridor - report: https://andya17.github.io/geog323-wildlife-corridor/ Find Alana Lutz's version of the work here: - blog post: https://alanalutz.github.io/reproduction/makayuni-corridor/ - repository: https://github.com/alanalutz/Makayuni-Corridor - report: https://alanalutz.github.io/Makayuni-Corridor/ [1]: https://gdal.org/programs/gdal_rasterize.html.io/geog323-wildlife-corridor/ Alana Lutz's repository has been forked to the OpenGISci GitHub account and included in the files for this OSF Project.