Example #1
0
 public function __construct(array $samples, array $stats = [])
 {
     if (count($samples) < 1) {
         throw new \LogicException('Cannot create a distribution with zero samples.');
     }
     $this->samples = $samples;
     $this->closures = ['min' => function () {
         return min($this->samples);
     }, 'max' => function () {
         return max($this->samples);
     }, 'sum' => function () {
         return array_sum($this->samples);
     }, 'stdev' => function () {
         return Statistics::stdev($this->samples);
     }, 'mean' => function () {
         return Statistics::mean($this->samples);
     }, 'mode' => function () {
         return Statistics::kdeMode($this->samples);
     }, 'variance' => function () {
         return Statistics::variance($this->samples);
     }, 'rstdev' => function () {
         $mean = $this->getMean();
         return $mean ? $this->getStdev() / $mean * 100 : 0;
     }];
     if ($diff = array_diff(array_keys($stats), array_keys($this->closures))) {
         throw new \RuntimeException(sprintf('Unknown pre-computed stat(s) encountered: "%s"', implode('", "', $diff)));
     }
     $this->stats = $stats;
 }
Example #2
0
function kde_mode($nodeList)
{
    $values = values($nodeList);
    return Statistics::kdeMode($values);
}