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@dfsj/wkx

v4.0.0-alpha.1

Published

WKT/WKB/EWKT/EWKB/TWKB/GeoJSON parser and serializer

Readme

@dfsj/wkx

Well-Known Text/Binary 几何格式解析库,提供 WKT/WKB 与 GeoJSON 之间的相互转换能力

version license

简介

@dfsj/wkx 是 Well-Known Text/Binary 几何格式解析库,提供 Point、LineString、Polygon 等完整几何类型的 WKT/WKB 与 GeoJSON 双向转换能力,适用于 GIS 数据交换和空间数据存储场景。

主要功能

  • Geometry 类 - Point / LineString / Polygon / Multi* 完整几何类型
  • 格式转换 - WKT ↔ WKB ↔ GeoJSON 双向转换
  • TWKB 支持 - Tiny Well-Known Binary 紧凑格式
  • EWKT/EWKB - 扩展坐标参考系统支持

安装

pnpm add @dfsj/wkx

快速开始

import { Geometry, wktToGeoJSON, geojsonToWKT } from '@dfsj/wkx'

// WKT 转 GeoJSON
const geojson = wktToGeoJSON('POINT(116.39 39.9)')
// => { type: 'Point', coordinates: [116.39, 39.9] }

// GeoJSON 转 WKT
const wkt = geojsonToWKT({ type: 'Point', coordinates: [116.39, 39.9] })
// => 'POINT(116.39 39.9)'

// 使用 Geometry 类
const point = new Point([116.39, 39.9])
console.log(point.toWKT())   // POINT(116.39 39.9)
console.log(point.toGeoJSON())

主要导出

| 导出名 | 类型 | 说明 | |:------|:-----|:-----| | Point | Class | 点几何 | | LineString | Class | 线几何 | | Polygon | Class | 面几何 | | MultiLineString | Class | 多线 | | MultiPolygon | Class | 多面 | | wktToGeoJSON | Function | WKT → GeoJSON | | geojsonToWKT | Function | GeoJSON → WKT | | wkbToGeoJSON | Function | WKB → GeoJSON | | geojsonToWKB | Function | GeoJSON → WKB |

完整 API 文档请查看 在线文档站

使用要求

| 环境 | 要求 | |:-----|:-----| | Node.js | >=18.12.0 |

开发指南

git clone http://10.10.12.18/dfsj/dfsj
pnpm install
cd packages/wkx
pnpm watch

文档

许可证

MIT

Copyright (c) 2022 - present yangbo