PHPackages                             prewk/coord-transform - PHPackages - PHPackages  [Skip to content](#main-content)[PHPackages](/)[Directory](/)[Categories](/categories)[Trending](/trending)[Leaderboard](/leaderboard)[Changelog](/changelog)[Analyze](/analyze)[Collections](/collections)[Log in](/login)[Sign up](/register)

1. [Directory](/)
2. /
3. [Utility & Helpers](/categories/utility)
4. /
5. prewk/coord-transform

ActiveLibrary[Utility & Helpers](/categories/utility)

prewk/coord-transform
=====================

Transform coordinates between swedish RT90, SWEREF99 and WGS84

0.0.2(11y ago)060CC BY-NC-SA 3.0PHP

Since Nov 3Pushed 8y ago1 watchersCompare

[ Source](https://github.com/prewk/CoordinateTransformationLibrary)[ Packagist](https://packagist.org/packages/prewk/coord-transform)[ Docs](https://github.com/prewk/CoordinateTransformationLibrary)[ RSS](/packages/prewk-coord-transform/feed)WikiDiscussions master Synced 1mo ago

READMEChangelogDependenciesVersions (3)Used By (0)

CoordTransform [![Build Status](https://camo.githubusercontent.com/65baa8bda7aa3e1ae922877c9c9ab56cd88c0626e9e09e02676d8bcebb8d93c2/68747470733a2f2f7472617669732d63692e6f72672f707265776b2f436f6f7264696e6174655472616e73666f726d6174696f6e4c6962726172792e7376673f6272616e63683d6d6173746572)](https://travis-ci.org/prewk/CoordinateTransformationLibrary)
=============================================================================================================================================================================================================================================================================================================================================================

[](#coordtransform-)

This is a composerified version of

Original README
---------------

[](#original-readme)

CoordinateTransformationLibrary - David Gustafsson 2012

RT90, SWEREF99 and WGS84 coordinate transformation library

This library is a PHP port of the .NET library by Björn Sållarp. calculations are based entirely on the excellent javscript library by Arnold Andreassons.

- Source:
- Source: Arnold Andreasson, 2007.
- Source: Björn Sållarp. 2009.
- Source: Mathias Åhsberg, 2009.
- Author: David Gustafsson, 2012.

License:

Installation
------------

[](#installation)

TODO

Modifications
-------------

[](#modifications)

I moved out some code to individual namespaced classes to enable PSR-4 autoloading. I also converted the test code to PHPUnit.

Usage
-----

[](#usage)

TODO

###  Health Score

25

—

LowBetter than 37% of packages

Maintenance20

Infrequent updates — may be unmaintained

Popularity8

Limited adoption so far

Community9

Small or concentrated contributor base

Maturity54

Maturing project, gaining track record

 Bus Factor1

Top contributor holds 61.1% of commits — single point of failure

How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window.

**Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores.

**Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement.

**Maturity (30%)** — Project age, version count, PHP version support, and release stability.

###  Release Activity

Cadence

Every ~0 days

Total

2

Last Release

4214d ago

### Community

Maintainers

![](https://avatars.githubusercontent.com/u/640102?v=4)[Oskar Thornblad](/maintainers/prewk)[@prewk](https://github.com/prewk)

---

Top Contributors

[![prewk](https://avatars.githubusercontent.com/u/640102?v=4)](https://github.com/prewk "prewk (11 commits)")[![goober](https://avatars.githubusercontent.com/u/124244?v=4)](https://github.com/goober "goober (7 commits)")

### Embed Badge

![Health badge](/badges/prewk-coord-transform/health.svg)

```
[![Health](https://phpackages.com/badges/prewk-coord-transform/health.svg)](https://phpackages.com/packages/prewk-coord-transform)
```

###  Alternatives

[swoole/phpy

Connecting the Python and PHP ecosystems together

6376.4k1](/packages/swoole-phpy)[remotelyliving/doorkeeper

A Feature Toggle

1636.9k](/packages/remotelyliving-doorkeeper)

PHPackages © 2026

[Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)