mirror of https://gitee.com/antv-l7/antv-l7
69 lines
1.7 KiB
TypeScript
69 lines
1.7 KiB
TypeScript
// @ts-ignore
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import { RasterLayer, Scene } from '@antv/l7';
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// @ts-ignore
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import { GaodeMap,Map } from '@antv/l7-maps';
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import React, { useEffect } from 'react';
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import * as GeoTIFF from 'geotiff';
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async function getTiffData() {
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const response = await fetch(
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'https://gw.alipayobjects.com/os/rmsportal/XKgkjjGaAzRyKupCBiYW.dat',
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);
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const arrayBuffer = await response.arrayBuffer();
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return arrayBuffer;
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}
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export default () => {
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useEffect(() => {
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const scene = new Scene({
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id: 'map',
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map: new Map({
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center: [121.268, 30.3628],
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zoom: 3,
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}),
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});
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scene.on('loaded', async () => {
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const tiffdata = await getTiffData();
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const tiff = await GeoTIFF.fromArrayBuffer(tiffdata);
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const image = await tiff.getImage();
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const width = image.getWidth();
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const height = image.getHeight();
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const values = await image.readRasters();
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const layer = new RasterLayer();
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layer
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.source(values[0], {
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parser: {
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type: 'raster',
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width,
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height,
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extent: [73.482190241, 3.82501784112, 135.106618732, 57.6300459963],
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},
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})
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.style({
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opacity: 1,
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clampLow: false,
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clampHigh: false,
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domain: [0, 10000],
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rampColors: {
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type:'custom',
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colors: ['#b2182b','#d6604d','#f4a582','#fddbc7','#f7f7f7','#d1e5f0','#92c5de','#4393c3','#2166ac'],
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positions: [0, 50, 200, 500, 2000, 3000, 4000, 5000, 8000,10000],
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},
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});
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scene.addLayer(layer);
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});
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}, []);
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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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height: '60vh',
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position: 'relative',
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}}
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/>
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);
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};
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