question: public static void writeSpatialGridTable ( SpatialGrid grid , String fileName ) { log . info ( "Writing spatial grid table " + fileName + " ..." ) ; SpatialGridTableWriter sgTableWriter = new SpatialGridTableWriter ( ) ; try { sgTableWriter . write ( grid , fileName ) ; log . info ( "... done!" ) ; } catch ( IOException e ) { e . printStackTrace ( ) ; } }
target:  stores measured accessibilities in a file