dataset.py 文件源码

def normalize_cord(latitude, longitude):
        '''
        Normalize GPS cord array, assuming the earth is shpherical
        :param latitude: latitude array to normalize
        :param longitude: longitude array to normalize
        :return: normalized arrays (np.array)
        '''
        rad_lat = np.deg2rad(latitude)
        rad_lon = np.deg2rad(longitude)

        x = np.cos(rad_lat) * np.cos(rad_lon)
        y = np.cos(rad_lat) * np.sin(rad_lon)
        z = np.sin(rad_lat)

        return x, y, z