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https://github.com/jtejido/geodesy-php
Geodesy PHP - Port of some known geodesic/math functions for getting distance from a known point A to a known point B given their coordinates. It also supports conversion between units of length, Polar position to Cartesian coordinates, and different Reference Datums.
https://github.com/jtejido/geodesy-php
andoyer-lambert-formula distance distance-calculation distance-measure formula geodesic-functions geodesy geodesy-php geospatial latitude longitude math-functions reference-datums transformations vincenty-formula web-mercator
Last synced: 2 months ago
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Geodesy PHP - Port of some known geodesic/math functions for getting distance from a known point A to a known point B given their coordinates. It also supports conversion between units of length, Polar position to Cartesian coordinates, and different Reference Datums.
- Host: GitHub
- URL: https://github.com/jtejido/geodesy-php
- Owner: jtejido
- License: mit
- Created: 2018-04-13T15:39:25.000Z (about 6 years ago)
- Default Branch: master
- Last Pushed: 2019-11-26T13:58:55.000Z (over 4 years ago)
- Last Synced: 2024-03-29T12:05:39.376Z (3 months ago)
- Topics: andoyer-lambert-formula, distance, distance-calculation, distance-measure, formula, geodesic-functions, geodesy, geodesy-php, geospatial, latitude, longitude, math-functions, reference-datums, transformations, vincenty-formula, web-mercator
- Language: PHP
- Homepage: http://myth-of-sissyphus.blogspot.com/2018/04/geodesyphp-great-earth-distance-library.html
- Size: 199 KB
- Stars: 28
- Watchers: 3
- Forks: 5
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Lists
- awesome-stars - geodesy-php - Port of some known geodesic/math functions for getting distance from a known point A to a known point B given their coordinates. It also supports conversion between units of length, Polar position to Cartesian coordinates, and different Reference Datums. | jtejido | 20 | (PHP)
README
Geodesy-PHP
=============
Geodesy-PHP is a port of some known geodesic/math functions for getting distance from a known point A to a known point B given their coordinates (good for working out distances between different latitude/longitude data provided by Google Geolocation or any RESTful APIs).
It also supports conversion between units of length, Polar position to Cartesian coordinates, and different Reference Datums.
It provides distance calculations by:
### [Great-circle distance](https://en.wikipedia.org/wiki/Great-circle_distance) ###
1. [Spherical Law of Cosines](https://en.wikipedia.org/wiki/Spherical_law_of_cosines)
2. [Haversine Formula](https://en.wikipedia.org/wiki/Haversine_formula)
### [Ellipsoid Geodesics](https://en.wikipedia.org/wiki/Geodesics_on_an_ellipsoid) ###
1. [Vincenty's Formula](https://en.wikipedia.org/wiki/Vincenty%27s_formulae)
2. [Hubeny's Formula](https://www.geo.tuwien.ac.at/fileadmin/editors/VGI/VGI_195403_Hubeny.pdf)
3. [Thomas' Formula](http://www.dtic.mil/dtic/tr/fulltext/u2/703541.pdf)
4. [Andoyer-Lambert Formula](https://navlib.net/wp-content/uploads/2013/10/admiralty-manual-of-navigation-vol-1-1964-english501c.pdf)
5. [Elliptic Distance](http://edukacja.3bird.pl/download/fizyka/astronomia-jean-meeus-astronomical-algorithms.pdf)
6. [Forsythe-Andoyer-Lambert Formula](http://www2.unb.ca/gge/Pubs/TR77.pdf)
## Unit Conversion ##
All operations are set in *Metre*. But it can also convert distance (and other transformation) values to:
1. Kilometre
2. Mile
3. Nautical Mile
4. Astronomical Unit
## Position Conversion ##
It also allows coordinate/geographical conversions between the ff:
1. Polar to Cartesian
2. Cartesian to Polar
3. Polar to Web Mercator
4. Web Mercator to Polar
## Transformation Options ##
Reference Datums are and will be, by default, set to WGS84. You can also transform one coordinate taken from a different source to another (see [this](https://epsg.io/) for reference), as it also comes with pre-built datums (see the Datum namespace for options).
The following are the transformation options:
1. 3-Parameter Molodensky Transformation
2. 7-Parameter Helmert Transformation
3. 10-Parameter Molodensky-Badekas Transformation
Documentation
=============
You can read about it [here](https://myth-of-sissyphus.blogspot.com/2018/04/geodesyphp-great-earth-distance-library.html)