//vue3加载geojson数据public/geojson/pt.json,在MapView渲染上加载geojson数据 type是"MultiPolygon"
fetch(baseUrl+'/geojson/pt.json')
.then(response => response.json())
.then(data => {
console.log(data)
// debugger
let graphics = data.features.map((feature) => {
//Polygon 单个多边形绘制
let geometry = {
type: 'polygon',
rings: feature.geometry.coordinates[0]
}
return new Graphic({
geometry: geometry,
attributes: feature.properties
})
})
let featureLayer = new FeatureLayer({
fields: [
{
name: 'ObjectID',
alias: 'ObjectID',
type: 'oid'
},
{
name: 'name',
alias: 'name',
type: 'string'
},
{
name: 'adcode',
alias: 'adcode',
type: 'integer'
}
],
objectIdField: 'ObjectID',
geometryType: 'polygon',
spatialReference: {
wkid: 4326
},
source: graphics,
renderer: {
type: 'simple',
symbol: {
type: 'simple-fill',
color: [227, 139, 79, 0.8],
outline: {
color: [255, 255, 255],
width: 1
}
}
},
labelingInfo: [
{
labelExpressionInfo: {
expression: '$feature.name'
},
symbol: {
type: 'text',
color: [0, 0, 0, 1],
haloColor: [255, 255, 255, 1],
haloSize: 1,
font: {
size: 12
}
}
}
]
})
//地图加载featureLayer
view.map.layers.add(featureLayer)
})
})