Array of points to one point in middle - php

Question

I got array of points:
array(
array('x' => ...,'y' => ...),
array('x' => ...,'y' => ...)
...
)
What is the best way to make those points one, that is in "avarge" position? Is pairing and then pairing and then pairing... a good algorithm?
I would give myself -1 for this question, as it seems to be really easy, but I am working on project for more than 20 hours now, and my brain went off.
Hmm... is it as simple as counting avarge x and avarge y?

Answer 1

The best solution would be to turn your computer off and go to sleep for a couple of good hours. Then wake up rested and ready for a new programming session. This solution in based on an assumption that those 20 hours you have assigned this project was without any proper breaks.
While this isn't a direct answer to your question, it will certainly help you get there by yourself. Don't underestimate the power of a nap.

Answer 2

Take a look at this function I wrote to loop through all the elements of your multidimensional array and return their average after adding all of the elements together.
print_r(getAveragePoints(array(array('x' => 1,'y' => 3),array('x' => 2,'y' => 4))));
function getAveragePoints($arrays = array()) {
if(!empty($arrays)) {
$i=0;
$x = 0;
$y = 0;
foreach($arrays as $array) {
// this would take avg
$x += $array['x']; // x
$y += $array['y']; // y
$i++;
}
$avgX = $x / $i;
$avgY = $y / $i;
return array($avgX,$avgY);
} else {
return array(0,0);
}
}

Answer 3

Simple average option:
$pointArray = array(
array('x' => 1,'y' => 2),
array('x' => 2,'y' => 5),
array('x' => 3,'y' => 3) ,
array('x' => 4,'y' => 6) ,
array('x' => 4,'y' => 5) ,
);
$valueCount = count($pointArray);
$midpoint = array_map(
function($value) use($valueCount) {
return $value / $valueCount;
},
array_reduce(
$pointArray,
function($summary, $value) {
return array(
'x' => $summary['x'] += $value['x'],
'y' => $summary['y'] += $value['y']
);
},
array('x' => 0, 'y' => 0)
)
);
var_dump($midpoint);