onst x = ((e.lngLat.lng * Math.PI) / 180) * earthRad;
                const a = (e.lngLat.lat * Math.PI) / 180;
                const y = (earthRad / 2) * Math.log((1.0 + Math.sin(a)) / (1.0 - Math.sin(a)));
                document.getElementById('mouse-position').innerHTML = 'X轴：' + x.toFixed(2) + '，Y轴：' + y.toFixed(2);
            });
            map.on('load', () => {
                initData(map);
            });
        }

        function initData(map) {
            map.addLayer({
         