krasilnikov-spb/php-rdp

There is no license information available for the latest version (0.3.0) of this package.

PHP implementation of the Ramer-Douglas-Peucker algorithm for reducing the number of points on a polyline

0.3.0 2020-05-29 08:17 UTC

Requires

• php: ^7.1

Requires (Dev)

• phpunit/phpunit: ^7

Unknown License

• Alexander Krasilnikov

• polyline
• simplify
• Ramer
• Douglas
• Peucker

README

PHP implementation of the Ramer-Douglas-Peucker algorithm for reducing the number of points on a polyline

Install

composer install 

Tests

./vendor/bin/phpunit --bootstrap vendor/autoload.php tests/TestSimplify

Usage

$track = [
           [
             "point" => ["lat" => 11.11, "lon" => 12.12],
             "other_data" => [...]
           ],
           ....
         ];

$rdp = new \phpRdp\phpRdp("point.lat", "point.lon", 0.001, "km");

$simplified_track = $rdp->RamerDouglasPeucker($track);

You can look at working example at tests/TestSimplify.php

Filter

If you need to keep some points in certain period of seconds, you may use setDatetimeFilter.

This line enables filter and sets maximum distance between dots in track at 20 minutes:

$rdp->setDatetimeFilter("datetime", 20 * 60);

Authorship

Based on code: http://www.loughrigg.org/rdp/ by David R. Edgar
Developed by Alexander Krasilnikov [e-mail]