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<?php
/**
* Matomo - free/libre analytics platform
*
* @link https://matomo.org
* @license https://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*/
namespace Piwik\Plugins\CoreHome\Columns\Metrics;
use Piwik\Columns\Dimension;
use Piwik\DataTable\Row;
use Piwik\Metrics\Formatter;
use Piwik\Piwik;
use Piwik\Plugin\ProcessedMetric;
/**
* The percentage of visits that leave the site without visiting another page. Calculated
* as:
*
* bounce_count / nb_visits
*
* bounce_count & nb_visits are calculated by an Archiver.
*/
class BounceRate extends ProcessedMetric
{
public function getName()
{
return 'bounce_rate';
}
public function getTranslatedName()
{
return Piwik::translate('General_ColumnBounceRate');
}
public function getDependentMetrics()
{
return array('bounce_count', 'nb_visits');
}
public function format($value, Formatter $formatter)
{
return $formatter->getPrettyPercentFromQuotient($value);
}
public function compute(Row $row)
{
$bounceCount = $this->getMetric($row, 'bounce_count');
$visits = $this->getMetric($row, 'nb_visits');
return Piwik::getQuotientSafe($bounceCount, $visits, $precision = 2);
}
public function getSemanticType(): ?string
{
return Dimension::TYPE_PERCENT;
}
}
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