mirror of https://gitee.com/antv-l7/antv-l7
79 lines
1.6 KiB
TypeScript
79 lines
1.6 KiB
TypeScript
import { HeatMapGridLayer } from '@l7/layers';
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import { Scene } from '@l7/scene';
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import * as React from 'react';
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export default class GridHeatMap extends React.Component {
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private scene: Scene;
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public componentWillUnmount() {
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this.scene.destroy();
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}
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public async componentDidMount() {
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const response = await fetch(
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'https://gw.alipayobjects.com/os/basement_prod/c3f8bda2-081b-449d-aa9f-9413b779205b.json',
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);
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const scene = new Scene({
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center: [116.49434030056, 39.868073421167621],
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id: 'map',
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pitch: 0,
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type: 'amap',
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style: 'mapbox://styles/mapbox/streets-v9',
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zoom: 16,
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});
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const layer = new HeatMapGridLayer({});
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layer
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.source(await response.json(), {
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parser: {
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type: 'json',
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x: 'lng',
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y: 'lat',
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},
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transforms: [
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{
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type: 'grid',
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size: 50,
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field: 'count',
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method: 'sum',
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},
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],
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})
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.size('sum', (value: number) => {
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return value;
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})
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.shape('circle')
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.style({
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coverage: 0.8,
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angle: 0,
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})
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.color('count', [
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'#002466',
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'#105CB3',
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'#2894E0',
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'#CFF6FF',
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'#FFF5B8',
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'#FFAB5C',
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'#F27049',
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'#730D1C',
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]);
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scene.addLayer(layer);
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scene.render();
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this.scene = scene;
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}
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public render() {
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return (
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<div
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id="map"
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style={{
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position: 'absolute',
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top: 0,
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left: 0,
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right: 0,
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bottom: 0,
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}}
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/>
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);
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}
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}
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