/**
* Calculate vertical ratio array
* @return array [%o]
*/
public function calculate()
{
if (!$this->Trackdata->has(Trackdata\Entity::VERTICAL_OSCILLATION) || !$this->Trackdata->has(Trackdata\Entity::STRIDE_LENGTH)) {
return [];
}
$Oscillation = $this->Trackdata->verticalOscillation();
$StrideLength = $this->Trackdata->strideLength();
$Size = $this->Trackdata->num();
$this->VerticalRatio = array();
for ($i = 0; $i < $Size; ++$i) {
$this->VerticalRatio[] = $StrideLength[$i] > 0 ? round(100 * $Oscillation[$i] / $StrideLength[$i]) : 0;
}
return $this->VerticalRatio;
}