code: protected function getDataForChartElements(array $data, $height)
      {
          $max = $this->getMaxValue();
          $minHeight = 1 * $this->ratioComputing;
          $maxHeight = $height - $minHeight;
          foreach ($data as $i => $value) {
              $value = (int)$value;
              if ($value <= 0) {
                  $value = 0;
              }
              if ($value > 0) {
                  $value = round(($value / $max) * $height);
              }
              $data[$i] = max($minHeight, min($value, $maxHeight));
          }
  
          return $data;
      }
docs: @param array $data
  @param $height
  
  @return array