mgrs.py 文件源码

 复制代码def _mgrsString(zone, letters, easting, northing, precision):
    """ Constructs an MGRS string from its component parts
    @param zone - UTM zone
    @param letters - MGRS coordinate string letters
    @param easting - easting value
    @param northing - northing value
    @param precision - precision level of MGRS string
    @returns - MGRS coordinate string
    """
    mrgs = ''
    if zone:
        tmp = str(zone)
        mgrs = tmp.zfill(3 - len(tmp))
    else:
        mgrs = '  '

    for i in range(3):
        mgrs += list(ALPHABET.keys())[list(ALPHABET.values()).index(letters[i])]

    easting = math.fmod(easting + 1e-8, 100000.0)
    if easting >= 99999.5:
        easting = 99999.0
    mgrs += str(int(easting)).rjust(5, '0')[:precision]

    northing = math.fmod(northing + 1e-8, 100000.0)
    if northing >= 99999.5:
        northing = 99999.0
    mgrs += str(int(northing)).rjust(5, '0')[:precision]

    return mgrs