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  Classes of Ken Schick  >  PHP Nearest Neighbor  >  example.php  >  Download  
File: example.php
Role: Example script
Content type: text/plain
Description: example
Class: PHP Nearest Neighbor
Find nearest neighbor of a set of location points
Author: By
Last change: fixed triangulation error
Date: 5 years ago
Size: 1,252 bytes
 

Contents

Class file image Download
<?php

/***************************************************************
* Copyright notice
*
* (c) 2014 Chi Hoang (info@chihoang.de)
* All rights reserved
*
***************************************************************/
require_once("main.php");
 
 
// Turn off all error reporting
error_reporting(0);

// example 1
$tri=new voronoi();
$set=$tri->main();
list(
$tree,$size)=$tri->buildtree($set);
$nearest=new nearestneighbor();
//$p=new Point(12,322);
$p=new Point(60,60);
//$p=new Point(26,229);
$find=$nearest->main($tri,$tree,$p);
$nearest->show($tri,$find,0,$p);
     
//example2
$set=array();
$tree=array(172,31,238,106,233,397,118,206,58,28,268,382,10,380,342,26,67,371,380,14,382,200,24,200,194,190,10,88,276,331);
for (
$i=0,$end=count($tree);$i<$end;$i+=2)
{
   
$set[]=array($tree[$i],$tree[$i+1]);
}
$tri=new voronoi();
list(
$tree,$size)=$tri->buildtree($set);

$nearest=new nearestneighbor();
//$p=new Point(12,322);
//$p=new Point(160,160);
$p=new Point(326,229);
//$p=new Point(188,298);

$find=$nearest->main($tri,$tree,$p);
$nearest->show($tri,$find,$size-4,$p);

// experimental point-in-polygon
//$find=$nearest->polytest($tri,0,$p);
$find=$nearest->polytest($tri,$size-4,$p);
?>