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<?php
/**
* Piwik - Open source web analytics
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html Gpl v3 or later
* @version $Id$
*
* @package Piwik_DataTable
*/
/**
* Delete all rows that have a $columnToFilter value less than the $minimumValue
*
* For example we delete from the countries report table all countries that have less than 3 visits.
* It is very useful to exclude noise from the reports.
* You can obviously apply this filter on a percentaged column, eg. remove all countries with the column 'percent_visits' less than 0.05
*
* @package Piwik_DataTable
* @subpackage Piwik_DataTable_Filter
*/
class Piwik_DataTable_Filter_ExcludeLowPopulation extends Piwik_DataTable_Filter
{
static public $minimumValue;
public function __construct( $table, $columnToFilter, $minimumValue )
{
$this->columnToFilter = $columnToFilter;
self::$minimumValue = $minimumValue;
parent::__construct($table);
$this->filter();
}
function filter()
{
$function = array("Piwik_DataTable_Filter_ExcludeLowPopulation",
"excludeLowPopulation");
$filter = new Piwik_DataTable_Filter_ColumnCallbackDeleteRow(
$this->table,
$this->columnToFilter,
$function
);
}
static public function excludeLowPopulation($value)
{
return $value >= self::$minimumValue;
}
}
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