mirror of https://gitee.com/antv-l7/antv-l7
82 lines
1.6 KiB
Markdown
82 lines
1.6 KiB
Markdown
---
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title: 散点图
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order: 2
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---
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<embed src="@/docs/common/style.md"></embed>
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散点图在地理区域上放置相等大小的圆点，用来表示地域上的空间布局或数据分布。
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<div>
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<div style="width:60%;float:left; margin: 10px;">
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<img width="80%" alt="案例" src='https://gw.alipayobjects.com/mdn/antv_site/afts/img/A*LnlmQ7sFWigAAAAAAAAAAABkARQnAQ'>
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</div>
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</div>
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### 实现
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下面我们来介绍如何绘制一个常见的散点图。
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- 你可以在 `L7` 官网上找到[在线案例](/examples/point/scatter/#scatter)
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```javascript
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import { Scene, PointLayer } from '@antv/l7';
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import { GaodeMap } from '@antv/l7-maps';
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const scene = new Scene({
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id: 'map',
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map: new GaodeMap({
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style: 'light',
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center: [ -121.24357, 37.58264 ],
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zoom: 6.45
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})
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});
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scene.on('loaded', () => {
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fetch('https://gw.alipayobjects.com/os/basement_prod/6c4bb5f2-850b-419d-afc4-e46032fc9f94.csv')
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.then(res => res.text())
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.then(data => {
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const pointLayer = new PointLayer({})
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.source(data, {
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parser: {
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type: 'csv',
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x: 'Longitude',
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y: 'Latitude'
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}
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})
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.shape('circle')
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.size(4)
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.color('Magnitude', [
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'#0A3663',
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'#1558AC',
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'#3771D9',
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'#4D89E5',
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'#64A5D3',
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'#72BED6',
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'#83CED6',
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'#A6E1E0',
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'#B8EFE2',
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'#D7F9F0'
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])
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scene.addLayer(pointLayer);
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});
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});
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```
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### shape
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散点图 `shape` 一般设置成常量，通常是 `2D` 的图表。
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- circle
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- square
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- hexagon
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- triangle
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- pentagon
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- octogon
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- hexagram
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- rhombus
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- vesica
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