coordutils.py 文件源码

def hms_to_decimal(hours, minutes, seconds, returndeg=True):
    '''
    Converts from HH:MM:SS to a decimal value.

    if returndeg is True: returns decimal degrees
    if returndeg is False: returns decimal hours

    '''

    if hours > 24:

        return None

    else:

        dec_hours = fabs(hours) + fabs(minutes)/60.0 + fabs(seconds)/3600.0

        if returndeg:

            dec_deg = dec_hours*15.0

            if dec_deg < 0:
                dec_deg = dec_deg + 360.0
            dec_deg = dec_deg % 360.0
            return dec_deg
        else:
            return dec_hours