public class IsInNYC extends ScalarFunction {

    // geo boundaries of the area of NYC

    private static double LON_EAST = -73.7;

    private static double LON_WEST = -74.05;

    private static double LAT_NORTH = 41.0;

    private static double LAT_SOUTH = 40.5;

    public static boolean eval(float lon, float lat) {

        return isInNYC(lon, lat);

    }

    public static boolean isInNYC(float lon, float lat) {

        return !(lon > LON_EAST || lon < LON_WEST) &&

                !(lat > LAT_NORTH || lat < LAT_SOUTH);

    }

}