Converter from NMEA to Decimals (GPS)

NMEA2GPS.js

function NMEA2GPS(num, pole){
    var poles = {'N':1,'S':-1,'W':-1,'E':1};
    var s = parseFloat(num).toString();
    var deg = s.substring(0,2);
    var min = s.substring(2);
    return (parseInt(deg) + parseFloat(min)/60) * poles[pole];
}

// NMEA2GPS(07721.2060, 'W') => -77.35347