“…Recently, the open source initiatives (http://opensource.org/) have offered great opportunities and flexibility to develop new software tools for land-use optimization problems. Open source software is usually developed by collaborations and can be used, changed, and shared for free, thereby facilitating and encouraging the adoption and use of various research methodologies (Jackson, Rey, and Járosi 2017). Although recent years have seen an extensive growth in both open source GIS software tools (e.g., QGIS, http://www.qgis.org) and open source optimization tools (e.g., COIN-OR, http://www.coin-or.org, and Liger, http://codem.group.shef.ac.uk/index.php/liger), there are few software tools available in the field of spatial optimization combining GIS and operations research.…”