mirror of https://gitee.com/antv-l7/antv-l7
84 lines
1.6 KiB
TypeScript
84 lines
1.6 KiB
TypeScript
import { HeatmapLayer, Scene } from '@antv/l7';
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import * as React from 'react';
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export default class GridHeatMap extends React.Component {
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// @ts-ignore
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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/7359a5e9-3c5e-453f-b207-bc892fb23b84.csv',
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);
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const data = await response.text();
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const scene = new Scene({
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id: 'map',
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style: 'dark',
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pitch: 0,
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center: [110.097892, 33.853662],
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zoom: 4.056,
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type: 'amap',
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});
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const layer = new HeatmapLayer({
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enablePicking: true,
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enableHighlight: true,
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})
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.source(data, {
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parser: {
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type: 'csv',
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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: 10000,
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field: 'v',
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method: 'sum',
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},
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],
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})
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.size('count', (value) => {
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return value * 0;
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})
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.shape('square')
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.style({
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coverage: 1,
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angle: 0,
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})
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.color(
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'count',
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[
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'#FF3417',
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'#FF7412',
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'#FFB02A',
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'#FFE754',
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'#46F3FF',
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'#02BEFF',
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'#1A7AFF',
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'#0A1FB2',
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].reverse(),
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);
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scene.addLayer(layer);
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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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