版本：9.0.0
图层数据过滤

可只显示符合自定义设置属性条件的图层数据。
<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8" />
    <title>图层数据过滤</title>
    <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
    <style>
        body {
            margin: 0;
            padding: 0;
        }

        #map {
            position: absolute;
            top: 0;
            bottom: 0;
            width: 100%;
            color: #f8f8f2;
        }

        .btn-group {
            position: absolute;
            top: 20px;
            left: 20px;
        }
    </style>
    <script src="https://delivery.mapmost.com/cdn/sdk/lite/v9.0.0/mapmost-lite-min.js"></script>
</head>

<body>
    <div id="map"></div>
    <div class="btn-group">
        <button onClick="showBuildingLow(this)">仅显示高度小于10的建筑物</button>
    </div>
    <script>
        let map = new mapmost.Map({
            container: 'map', // container id
            style: "<your style url>",// style URL
            center: [120.72541613154851, 31.31171803927643],// starting position [lng, lat]
            zoom: 14,// starting zoom
            pitch: 59.48725112156901,// starting pitch
            bearing: -54.10626584095007,// starting bearing
            userId: '***', // 授权码,此参数务必添加
        });

        map.on('load', function () {
            map.addLayer(  {
                "id": "buildings",
                "type": "fill-extrusion",
                "source": "cultural",
                "source-layer": "b_buildings",
                "layout": {"visibility": "visible"},
                "paint": {
                    "fill-extrusion-height": ["get", "jzzgdgd"],
                    "fill-extrusion-color":"rgb(69, 86, 115)"
                    "fill-extrusion-opacity": 1
                }
            })
        })

        function showBuildingLow(e) {
            if (e.innerHTML == "仅显示高度小于10的建筑物") {
                map.setFilter('buildings', ["<", 'ztykgd', 10]);
                e.innerHTML = "全部显示"
            } else {
                map.setFilter('buildings', null);
                e.innerHTML = "仅显示高度小于10的建筑物"
            }
        }
    </script>
</body>

</html>