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[Utility & Helpers](/categories/utility) 4. / 5. tuupola/trilateration ActiveLibrary[Utility & Helpers](/categories/utility) tuupola/trilateration ===================== Trilateration for PHP 0.2.1(7y ago)24631↓100%6[2 issues](https://github.com/tuupola/trilateration/issues)MITPHP Since May 24Pushed 7y ago4 watchersCompare [ Source](https://github.com/tuupola/trilateration)[ Packagist](https://packagist.org/packages/tuupola/trilateration)[ Docs](https://github.com/tuupola/trilateration)[ RSS](/packages/tuupola-trilateration/feed)WikiDiscussions master Synced 1mo ago READMEChangelogDependencies (5)Versions (5)Used By (0) Trilateration ============= [](#trilateration) [![Latest Version](https://camo.githubusercontent.com/d7a50ef8c5a4a5392fb23ddd98df994e4de9efc73dea35c4b0d78c328aed7ecb/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f762f747575706f6c612f7472696c617465726174696f6e2e7376673f7374796c653d666c61742d737175617265)](https://packagist.org/packages/tuupola/trilateration)[![Software License](https://camo.githubusercontent.com/55c0218c8f8009f06ad4ddae837ddd05301481fcf0dff8e0ed9dadda8780713e/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f6c6963656e73652d4d49542d627269676874677265656e2e7376673f7374796c653d666c61742d737175617265)](LICENSE.md)[![Build Status](https://camo.githubusercontent.com/ee919361c16a74e8f514c300b13994448fd5a77da1c38195fc929a6d11843848/68747470733a2f2f696d672e736869656c64732e696f2f7472617669732f747575706f6c612f7472696c617465726174696f6e2f6d61737465722e7376673f7374796c653d666c61742d737175617265)](https://travis-ci.org/tuupola/trilateration)[![Coverage](https://camo.githubusercontent.com/187426f6455396a60be008e04f3fb9a1c75e11ed4cfd1aa383a97ac637bcdfd1/687474703a2f2f696d672e736869656c64732e696f2f636f6465636f762f632f6769746875622f747575706f6c612f7472696c617465726174696f6e2e7376673f7374796c653d666c61742d737175617265)](https://codecov.io/github/tuupola/trilateration) PHP implementation of [Trilateration](https://en.wikipedia.org/wiki/Trilateration) algorithm. See [Wifi Trilateration With Three or More Points](https://appelsiini.net/2017/trilateration-with-n-points/) for walkthrough. Install ------- [](#install) Install the library using [Composer](https://getcomposer.org/). ``` $ composer require tuupola/trilateration ``` Usage ----- [](#usage) ### Pure PHP Version [](#pure-php-version) Pure PHP implementation calculates the position by finding the intersection of three spheres using traditional algebra. If the spheres do not intersect algorithm enlarges the spheres until they do intersect. ``` use Tuupola\Trilateration\Intersection; use Tuupola\Trilateration\Sphere; $sphere1 = new Sphere(60.1695, 24.9354, 81175); $sphere2 = new Sphere(58.3806, 26.7251, 162311); $sphere3 = new Sphere(58.3859, 24.4971, 116932); $trilateration = new Intersection($sphere1, $sphere2, $sphere3); $point = $trilateration->position(); print_r($point); /* Tuupola\Trilateration\Point Object ( [latitude:protected] => 59.418775152143 [longitude:protected] => 24.753287172291 ) */ $url = "https://appelsiini.net/circles/" . "?c={$sphere1}&c={$sphere2}&c={$sphere3}&m={$point}"; print 'Open in map'; ``` [Open in map](https://appelsiini.net/circles/?c=60.1695,24.9354,81175&c=58.3806,26.7251,162311&c=58.3859,24.4971,116932&m=59.418775152143,24.753287172291%22) ### Non Linear Least Squares Using R [](#non-linear-least-squares-using-r) R version uses [non linear least squares fitting](http://mathworld.wolfram.com/NonlinearLeastSquaresFitting.html). It can use three or more locations for the calculation and gives better results when given data is less accurate. Before using this version you must install the [R language](https://www.r-project.org/) and [geosphere](https://cran.r-project.org/web/packages/geosphere/index.html) package. ``` $ sudo yum -y install R $ sudo su - -c "R -e \"install.packages('geosphere', repos='http://cran.rstudio.com/')\"" ``` ``` use Tuupola\Trilateration\NonLinearLeastSquares; use Tuupola\Trilateration\Sphere; $sphere1 = new Sphere(60.1695, 24.9354, 81175); $sphere2 = new Sphere(58.3806, 26.7251, 162311); $sphere3 = new Sphere(58.3859, 24.4971, 116932); $trilateration = new NonLinearLeastSquares($sphere1, $sphere2, $sphere3); $point = $trilateration->position(); print_r($point); /* Tuupola\Trilateration\Point Object ( [latitude:protected] => 59.4355408765689 [longitude:protected] => 24.7747644991839 ) */ $url = "https://appelsiini.net/circles/" . "?c={$sphere1}&c={$sphere2}&c={$sphere3}&m={$point}"; print 'Open in map'; ``` [Open in map](https://appelsiini.net/circles/?c=60.1695,24.9354,81175&c=58.3806,26.7251,162311&c=58.3859,24.4971,116932&m=59.4355408765689,24.7747644991839) Testing ------- [](#testing) You can run tests either manually or automatically on every code change. Automatic tests require [entr](http://entrproject.org/) to work. ``` $ make test ``` ``` $ brew install entr $ make watch ``` Contributing ------------ [](#contributing) Please see [CONTRIBUTING](CONTRIBUTING.md) for details. Security -------- [](#security) If you discover any security related issues, please email instead of using the issue tracker. License ------- [](#license) The MIT License (MIT). Please see [License File](LICENSE.md) for more information. ### Health Score 31 — LowBetter than 68% of packages Maintenance18 Infrequent updates — may be unmaintained Popularity25 Limited adoption so far Community12 Small or concentrated contributor base Maturity56 Maturing project, gaining track record Bus Factor1 Top contributor holds 100% 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 ~268 days Total 3 Last Release 2735d ago ### Community Maintainers ![](https://www.gravatar.com/avatar/3325405a7d8a43bc40dd0e760a4b7f268fba32a7150cf0327f64f13d1661df0b?d=identicon)[tuupola](/maintainers/tuupola) --- Top Contributors [![tuupola](https://avatars.githubusercontent.com/u/21913?v=4)](https://github.com/tuupola "tuupola (34 commits)") --- Tags trilaterationwifigeoposition ### Code Quality TestsPHPUnit Code StylePHP\_CodeSniffer ### Embed Badge ![Health badge](/badges/tuupola-trilateration/health.svg) ``` [![Health](https://phpackages.com/badges/tuupola-trilateration/health.svg)](https://phpackages.com/packages/tuupola-trilateration) ``` ### Alternatives [civicrm/civicrm-core Open source constituent relationship management for non-profits, NGOs and advocacy organizations. 728272.9k17](/packages/civicrm-civicrm-core)[shivas/versioning-bundle Symfony application versioning, simple console command to manage version (with providers e.g. git tag) of your application using Semantic Versioning 2.0.0 recommendations 1121.2M1](/packages/shivas-versioning-bundle)[eclipxe/cfdiutils PHP Common utilities for Mexican CFDI 3.2, 3.3 & 4.0 141129.9k6](/packages/eclipxe-cfdiutils)[shyim/danger-php Port of danger to PHP 8544.9k](/packages/shyim-danger-php)[vaimo/composer-changelogs Provide information about package changes based on changelog files that are bundled with releases; provide tools for generating documentation files from changelog sources 11150.5k10](/packages/vaimo-composer-changelogs) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)