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版本：9.1.0

堆叠柱体

空间范围内包含总量和分量比例关系的表达，例如地块各类水源的税收额以及总税额的比较关系。

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<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8"/>
    <title>堆叠柱体</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%;
        }
    </style>
    <script src="https://delivery.mapmost.com/cdn/sdk/webgl/v9.1.0/mapmost-webgl-min.js"></script>
</head>
<body>
<div id="map"></div>
<script>
    let map = new mapmost.Map({
        container: 'map',  
        style: "<your style url>", 
        center: [ 120.67441886080676, 31.319034705061426], 
        zoom: 15, 
        pitch:60,
        userId: '***', // 授权码 
    });

    map.on('load', function () {
     
        map.addSource("cultural_", {
            type: "geojson",
            data: "../example_data/3dbuildings_simple.geojson"
        })

        map.addLayer({
            "id": "building-low",
            "type": "fill-extrusion",
            "source": "cultural_",
            "layout": {
                "visibility": "visible"
            },
            "paint": {
                "fill-extrusion-height": ["*",0.3,['get', "ztykgd"]],
                "fill-extrusion-color": "#4a5fee",
                'fill-extrusion-opacity': 0.75,    // 柱体透明度（0-1）
            }
        })
        map.addLayer({
            "id": "building-mid",
            "type": "fill-extrusion",
            "source": "cultural_",
            "layout": {
                "visibility": "visible"
            },
            "paint": {
                "fill-extrusion-base": ["*",0.3,['get', "ztykgd"]],
                "fill-extrusion-height": ["*",0.8,['get', "ztykgd"]],
                "fill-extrusion-color": "#ffffff",
                'fill-extrusion-opacity': 0.75,    // 柱体透明度（0-1）
            }
        })
        map.addLayer({
            "id": "building-high",
            "type": "fill-extrusion",
            "source": "cultural_",
            "layout": {
                "visibility": "visible"
            },
            "paint": {
                "fill-extrusion-base": ["*",0.8,['get', "ztykgd"]],
                "fill-extrusion-height": ['get', "ztykgd"],
                "fill-extrusion-color": "#ee2c35",
                'fill-extrusion-opacity': 0.75,    // 柱体透明度（0-1）
            }
        })

    })
</script>
</body>
</html>