ogr2ogr This program can be used to convert simple features data between file formats performing various operations during the process such as spatial or attribute selections, reducing the set of attributes, setting the output coordinate system or even reprojecting the features during translation. http://gdal.osgeo.org/ogr2ogr.html xmin ymin xmax ymax NONE GEOMETRY POINT LINESTRING POLYGON GEOMETRYCOLLECTION MULTIPOINT MULTIPOLYGON MULTILINESTRING xmin ymin xmax ymax