UPDATE: pkg API has changed - updated the post below to work with the current CRAN version, submitted 2016-08-02 I was at a hackathon focused on Ocean Biogeographic Information System (OBIS) data back in November last year in Belgium. One project idea was to make it easier to get at data based on one or more marine regions. I was told that Marineregions.org is often used for shape files to get different regions to then do other work with. ...
At rOpenSci we’ve been working on an R package (geojsonio) to make converting R data in various formats to geoJSON and topoJSON, and vice versa. We hope to do this one job very well, and handle all reasonable use cases. Functions in this package are organized first around what you’re working with or want to get, geojson or topojson, then convert to or read from various formats: geojson_list()/topojson_list() - convert to geojson/topojson as R list format geojson_json()/topojson_json() - convert to geojson/topojson as json geojson_read()``topojson_read() - read a geojson/topojson file from file path or URL geojson_write()/topojson_write() - write a geojson/topojson file locally Each of the above functions have methods for various objects/classes, including numeric, data.frame, list, SpatialPolygons, SpatialPolygonsDataFrame, SpatialLines, SpatialLinesDataFrame, SpatialPoints, SpatialPointsDataFrame. ...