xbt_dynar_foreach(ctn_str,cursor, str) {
double val = xbt_str_parse_double(str, "Invalid coordinate: %s");
xbt_dynar_push(ctn,&val);
xbt_dynar_foreach(ctn_str,cursor, str) {
double val = xbt_str_parse_double(str, "Invalid coordinate: %s");
xbt_dynar_push(ctn,&val);