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cesiumjs-heat
Advanced tools
Readme
heatmap for cesium | cesium的热力图
quick glance https://www.youtube.com/watch?v=m4_9aNZcv90&list=PLM1v95K5B1ntVsYvNJIxgRPppngrO_X4s
install
npm i cesiumjs-heat --save
code
import * as Cesium from 'cesium'
import data from './data/last-all-airbox'
import getCesiumHeat from 'cesiumjs-heat'
// handle Cesium import on your own | 剔除了Cesium的依赖,因为在npm依赖了也不能直接使用,因为amd标准需要配置webpac
const CesiumHeat = getCesiumHeat(Cesium)
const viewer = new Cesium.Viewer('container')
// auto add after construct | 构造后自动添加到cesium图层
let heat = new CesiumHeat(
viewer,
// data list, each has x, y, and value | 数据数组,每个包含 x,y,value字段
data.feeds.map(({ gps_lon, gps_lat, s_d0 }) => {
return {
x: gps_lon,
y: gps_lat,
value: s_d0,
}
}),
// bbox for heatmap | 只在范围内显示热力图拉近会清晰些,默认整个地球但拉近后巨模糊
[120.106188593, 21.9705713974, 121.951243931, 25.2954588893]
)
// destory | 销毁
setTimeout(()=>heat.destory(),10*1000)
let heat = new CesiumHeat(
// cesium viewer
viewer,
// data list, each has x, y, and value | 数据数组,每个包含 x,y,value字段
{
autoMaxMin: true, // 自动计算最大值和最小值
min: 0, // 指定最小值,autoMaxMin时无效,非autoMaxMin时必填
max: 100, // 指定最大值,autoMaxMin时无效,非autoMaxMin时必填
data: [ // 数据数组,默认空数组
{
x: 120.106188593, // 经度坐标(-180~180)
y: 21.9705713974, // 纬度坐标 (-90~90)
value: 10, // 值
}
]
},
// bbox for heatmap | 只在范围内显示热力图拉近会清晰些,不填默认整个地球但拉近后巨模糊
[120.106188593, 21.9705713974, 121.951243931, 25.2954588893],
// heatmap.js construction | heatmap.js的构造配置,不填默认如下,参考 https://www.patrick-wied.at/static/heatmapjs/docs.html
{},
// auto radius change with height | 自动按高度控制热点的辐射,默认值如下
{
enabled: true, // 是否开启,关闭的话不会自动更新
min: 6375000, // 最低高度,对应高度的辐射为minRadius
max: 10000000, // 最大高度,对应高度的辐射为maxRadius
maxRadius: 20 * 2,
minRadius: 5 * 2,
},
// auto resize canvas | 自动按bbox形状控制canvas形状,默认值如下,canvas面积越大越清晰,也越卡
{
autoResize: true, // 是否自动调整canvas
totalArea: 360 * 2 * 720 * 2, // 总面积,如果自动,必填,如果不自动,无效
width: 720 * 2, // canvas宽度,如果不自动,必填,如果自动,无效
height: 360 * 2, // canvas高度,如果不自动,必填,如果自动,无效
}
)
// 动态增加数据(多个)
heat.addData([ // 数据数组
{
x: 120.106188593, // 经度坐标(-180~180)
y: 21.9705713974, // 纬度坐标 (-90~90)
value: 10, // 值
}
])
// 动态增加数据(单个)
heat.addData({
x: 120.106188593, // 经度坐标(-180~180)
y: 21.9705713974, // 纬度坐标 (-90~90)
value: 10, // 值
})
FAQs
heatmap for cesium | cesium的热力图
The npm package cesiumjs-heat receives a total of 98 weekly downloads. As such, cesiumjs-heat popularity was classified as not popular.
We found that cesiumjs-heat demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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