百度地图处理geojson数据

bmapGeojsonFun.js

        function displayGeoJSON(geoJsonData) {
            if (!geoJsonData || !geoJsonData.features) {
                console.error("无效的GeoJSON数据");
                return;
            }
            geoJsonData.features.forEach(function (feature) {
                var geometry = feature.geometry;
                var coordinates = [];
                var type = geometry.type;
                if (type === "Point") {
                    coordinates = [geometry.coordinates[1], geometry.coordinates[0]];  // [lng, lat]
                    var point = new BMap.Point(coordinates[0], coordinates[1]);
                    var marker = new BMap.Marker(point);
                    map.addOverlay(marker);
                } else if (type === "LineString") {
                    coordinates = geometry.coordinates.map(function (coord) {
                        return new BMap.Point(coord[0], coord[1]);
                    });
                    var polyline = new BMap.Polyline(coordinates, { strokeColor: "blue", strokeWeight: 2, strokeOpacity: 0.5 });
                    map.addOverlay(polyline);
                } else if (type === "Polygon") {
                    coordinates = geometry.coordinates[0].map(function (coord) {
                        return new BMap.Point(coord[0], coord[1]);
                    });
                    var polygon = new BMap.Polygon(coordinates, { strokeColor: "transparent", strokeWeight: 0, strokeOpacity: 0, fillColor: "rgba(0, 0, 255, 0.1)", fillOpacity: 0.5 });
                    map.addOverlay(polygon);
                } else if (type === "MultiPoint") {
                    coordinates = geometry.coordinates.map(function (coord) {
                        return new BMap.Point(coord[0], coord[1]);
                    });
                    coordinates.forEach(function (coord) {
                        var marker = new BMap.Marker(coord);
                        map.addOverlay(marker);
                    });
                } else if (type === "MultiLineString") {
                    geometry.coordinates.forEach(function (line) {
                        var lineCoordinates = line.map(function (coord) {
                            return new BMap.Point(coord[0], coord[1]);
                        });
                        var polyline = new BMap.Polyline(lineCoordinates, { strokeColor: "blue", strokeWeight: 2, strokeOpacity: 0.5 });
                        map.addOverlay(polyline);
                    });
                } else if (type === "MultiPolygon") {
                    geometry.coordinates.forEach(function (polygon) {
                        var polygonCoordinates = polygon[0].map(function (coord) {
                            return new BMap.Point(coord[0], coord[1]);
                        });
                        var poly = new BMap.Polygon(polygonCoordinates, { strokeColor: "transparent", strokeWeight: 0, strokeOpacity: 0, fillColor: "rgba(0, 0, 255, 0.1)", fillOpacity: 0.5 });
                        map.addOverlay(poly);
                    });
                } else {
                    console.warn("不支持的GeoJSON几何类型: " + type);
                }
            })
        }