Class: GeoHeatMapLayerRenderer

CMAP~ GeoHeatMapLayerRenderer

Feature中GeoHeatMap样式类

Members

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<readonly> extent :Object

热力图绘制范围 如果定义了该参数 热力图不会随视角变化而变化 格式为{minX:116.5,minY:38.5,maxX:117.5,maxY:39.5}

Type:

• Object

---

gradient :Number

热力图影响半径 单位像素

Type:

• Number

Example

//色带对象的key为位置 值为对应的颜色值featureLayer.renderer.gradient = { 0: 'rgb(0,0,255)', 0.33: 'rgb(0,255,0)', 0.66: 'yellow', 1.0: 'rgb(255,0,0)'};

---

maxOpacity :Number

热力图最大值对应的透明度

Type:

• Number

Example

featureLayer.renderer.maxOpacity = 0.8; //设置热力图最大值对应的透明度为0.8

---

minOpacity :Number

热力图最小值对应的透明度

Type:

• Number

Example

featureLayer.renderer.minOpacity = 0.2; //设置热力图最小值对应的透明度为0.2

---

<readonly> mosaic :Boolean

是否叠加马赛克效果

Type:

• Boolean

---

<readonly> mosaicSize :Number

单个马赛克尺寸

Type:

• Number

---

<readonly> opacity :Number

热力图透明度

Type:

• Number

---

radius :Number

热力图影响半径 单位像素

Type:

• Number

Example

featureLayer.renderer.radius = 20;//设置热力图影响半径为20像素

---

valueField :String

热力图权重字段

Type:

• String

Example

// 假设featureLayer.dataSource为
    // {
    //    "type": "FeatureCollection",
    //    "features": [{
    //       "type": "Feature",
    //       "properties": {
    //         "type": "rain",
    //         "value": 5
    //       },
    //       "geometry": {
    //         "type": "Point",
    //         "coordinates": [-73.99995803833008, 40.71805432623303]
    //       }
    //     }, {
    //       "type": "Feature",
    //       "properties": {
    //         "type": "water",
    //         "value": 7
    //       },
    //       "geometry": {
    //         "type": "Point",
    //         "coordinates": [-73.98167610168457, 40.726087955120704]
    //       }
    //     }]
    // }
   featureLayer.renderer.valueField = 'value';//设置热力图权重字段为value