l-we / transform

坐标系转换

transform

坐标系转换

• https://en.wikipedia.org/wiki/Restrictions_on_geographic_data_in_China
• https://github.com/sshuair/coord-convert
• https://github.com/googollee/eviltransform/blob/master/go/transform.go
• WGS84：即地球坐标系，国际上通用的坐标系。
• WebMC：即Web墨卡托，Web映射上的事实标准。
• ZXY：即瓦片坐标系，瓦片地图的切割方式。
• GCJ02：即火星坐标系，WGS84坐标系经加密后的坐标系。
• BD09：即百度坐标系，GCJ02坐标系经加密后的坐标系。
• BD09MC：即百度Web墨卡托，Web墨卡托经2次加密后的坐标系。

Installation

go get github.com/l-we/transform

Quick Start

package main

import (
	"fmt"

	"github.com/l-we/transform"
)

func main() {
	fmt.Println(transform.BD09toGCJ02(121.5272106, 31.1774276))
	fmt.Println(transform.GCJ02toBD09(121.5272106, 31.1774276))
	fmt.Println(transform.WGS84toGCJ02(121.5272106, 31.1774276))
	fmt.Println(transform.GCJ02toWGS84(121.5272106, 31.1774276))
	fmt.Println(transform.GCJ02toWGS84Exact(121.5272106, 31.1774276))
	fmt.Println(transform.BD09toWGS84(121.5272106, 31.1774276))
	fmt.Println(transform.WGS84toBD09(121.5272106, 31.1774276))

	fmt.Println(transform.WGS84toWebMC(121.5272106, 31.1774276))
	fmt.Println(transform.BD09toBD09MC(121.5272106, 31.1774276))

	fmt.Println(transform.WebMCtoWGS84(13529697, 3633994))
	fmt.Println(transform.BD09MCtoBD09(13529697, 3633994))
	fmt.Println(transform.BD09MCtoWGS84(13529697, 3633994))

	fmt.Println(transform.ZXYtoWebMCBound(12, 3429, 1673))
	fmt.Println(transform.ZXYtoWGS84Bound(12, 3429, 1673))
}