geoJson與wkt都是WebGIS開發中經常用到的格式，天地圖行政區劃邊界接口返回的是wkt格式數據，需要轉換一下。

安裝插件：@terraformer/wkt

npm install @terraformer/wkt

兩個函數：

• .wktToGeoJSON(WKT)???object
• .geojsonToWKT(GeoJSON)???string

wkt轉geoJson

import { wktToGeoJSON } from "@terraformer/wkt"wktToGeoJSON("POINT (-122.6764 45.5165)");>> { "type": "Point", "coordinates": [ -122.6764, 45.5165 ] }

geoJson轉wkt

import { geojsonToWKT } from "@terraformer/wkt"const geojsonPoint = {"type": "Point","coordinates": [-122.6764, 45.5165]
}geojsonToWKT(geojsonPoint)>> "POINT (-122.6764 45.5165)"

其他使用方式

Browser (from CDN)

This package is distributed as a?UMD?module and can also be used in AMD based systems or as a global under the?Terraformer?namespace.

<script src="https://unpkg.com/@terraformer/wkt"></script>
Terraformer.wktToGeoJSON("POINT (-122.6764 45.5165)");

Node.js

const Terraformer = require('@terraformer/wkt');Terraformer.geojsonToWKT(/* ... */);
Terraformer.wktToGeoJSON(/* ... */);

ES module in the browser

<script type='module'>import { wktToGeoJSON } from 'https://unpkg.com/@terraformer/wkt?module';// look ma, no build step!wktToGeoJSON(/* ... */);
</script>