Piwik\DataTable\Filter\

ExcludeLowPopulation

Deletes all rows for which a specific column has a value that is lower than specified minimum threshold value.

Basic usage examples

// remove all countries from UserCountry.getCountry that have less than 3 visits
$dataTable = // ... get a DataTable whose queued filters have been run ...
$dataTable->filter('ExcludeLowPopulation', array('nb_visits', 3));

// remove all countries from UserCountry.getCountry whose percent of total visits is less than 5%
$dataTable = // ... get a DataTable whose queued filters have been run ...
$dataTable->filter('ExcludeLowPopulation', array('nb_visits', false, 0.05));

// remove all countries from UserCountry.getCountry whose bounce rate is less than 10%
$dataTable = // ... get a DataTable that has a numerical bounce_rate column ...
$dataTable->filter('ExcludeLowPopulation', array('bounce_rate', 0.10));

Methods

The class defines the following methods:

• __construct() — Constructor.
• filter() ash; See ExcludeLowPopulation.
• enableRecursive() ash; Enables/Disables recursive filtering. Inherited from BaseFilter
• filterSubTable() ash; Filters a row's subtable, if one exists and is loaded in memory. Inherited from BaseFilter

__construct()

Constructor.

Signature

• It accepts the following parameter(s):

  • $table (DataTable) —

  • $columnToFilter (string) — The name of the column whose value will determine whether a row is deleted or not.

  • $minimumValue (Piwik\DataTable\Filter\number|false) — The minimum column value. Rows with column values < this number will be deleted. If false, $minimumPercentageThreshold is used.
  • $minimumPercentageThreshold (bool|float) — If supplied, column values must be a greater percentage of the sum of all column values than this percentage.

filter()

See ExcludeLowPopulation.

Signature

• It accepts the following parameter(s):

  • $table (DataTable) —

• It does not return anything or a mixed result.

enableRecursive()

Enables/Disables recursive filtering. Whether this property is actually used is up to the derived BaseFilter class.

Signature

• It accepts the following parameter(s):

  • $enable (bool) —

• It does not return anything or a mixed result.

filterSubTable()

Filters a row's subtable, if one exists and is loaded in memory.

Signature

• It accepts the following parameter(s):
  • $row (Row) — The row whose subtable should be filter.
• It does not return anything or a mixed result.