https://github.com/wroge/wgs84

A zero-dependency Go package for coordinate transformations.
https://github.com/wroge/wgs84

coordinate-conversion coordinate-converter coordinate-transformation epsg etrs89 geodetic-datum latitude longitude nad83 osgb36 utm web-mercator wgs84

Last synced: about 13 hours ago
JSON representation

A zero-dependency Go package for coordinate transformations.

• Host: GitHub
• URL: https://github.com/wroge/wgs84
• Owner: wroge
• License: mit
• Created: 2019-06-08T17:17:59.000Z (over 5 years ago)
• Default Branch: v2
• Last Pushed: 2024-07-16T08:14:00.000Z (5 months ago)
• Last Synced: 2024-10-01T08:41:25.934Z (3 months ago)
• Topics: coordinate-conversion, coordinate-converter, coordinate-transformation, epsg, etrs89, geodetic-datum, latitude, longitude, nad83, osgb36, utm, web-mercator, wgs84
• Language: Go
• Homepage:
• Size: 15.7 MB
• Stars: 124
• Watchers: 2
• Forks: 17
• Open Issues: 4
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-go - WGS84 - Library for Coordinate Conversion and Transformation (ETRS89, OSGB36, NAD83, RGF93, Web Mercator, UTM). (Geographic / Search and Analytic Databases)
• awesome-go-extra - wgs84 - dependency Go package for coordinate transformations.|87|7|0|2019-06-08T17:17:59Z|2022-06-05T08:34:33Z| (Geographic / Advanced Console UIs)

README

        
## WGS84 - Coordinate Transformations

```

github.com/wroge/wgs84/v2

```  

I am currently in the process of rewriting the package. Some things will change and some new features will be added. One of these features is the support of NTv2 grid transformations and other projections, such as Krovak. If you would like to help or have any comments, please report them in the issues.

### Web Mercator

```go

package main

import (

	"fmt"

	"github.com/wroge/wgs84/v2"

)

func main() {

	transform := wgs84.Transform(wgs84.EPSG(4326), wgs84.EPSG(3857)).Round(3)

	east, north, _ := transform(10, 50, 0)

	fmt.Println(east, north)

	// 1.113194908e+06 6.446275841e+06

	// echo 10 50 | cs2cs +init=epsg:4326 +to +init=epsg:3857 -d 3

	// 1113194.908     6446275.841

}

```

### OSGB

```go

package main

import (

	"fmt"

	"github.com/wroge/wgs84/v2"

)

func main() {

	transform := wgs84.Transform(wgs84.EPSG(4326), wgs84.EPSG(27700)).Round(3)

	east, north, h := transform(-2.25, 52.25, 0)

	fmt.Println(east, north, h)

	// 383029.296 261341.615 0

	// echo -2.25 52.25 | cs2cs +init=epsg:4326 +to +init=epsg:27700 -d 3

	// 383029.296 261341.615 0.000

}

```