/**
* SUBTOTAL
*
* Returns a subtotal in a list or database.
*
* @param int the number 1 to 11 that specifies which function to
* use in calculating subtotals within a list.
* @param array of mixed Data Series
* @return float
*/
public static function SUBTOTAL()
{
$aArgs = Functions::flattenArray(func_get_args());
// Calculate
$subtotal = array_shift($aArgs);
if (is_numeric($subtotal) && !is_string($subtotal)) {
switch ($subtotal) {
case 1:
return Statistical::AVERAGE($aArgs);
case 2:
return Statistical::COUNT($aArgs);
case 3:
return Statistical::COUNTA($aArgs);
case 4:
return Statistical::MAX($aArgs);
case 5:
return Statistical::MIN($aArgs);
case 6:
return self::PRODUCT($aArgs);
case 7:
return Statistical::STDEV($aArgs);
case 8:
return Statistical::STDEVP($aArgs);
case 9:
return self::SUM($aArgs);
case 10:
return Statistical::VARFunc($aArgs);
case 11:
return Statistical::VARP($aArgs);
}
}
return Functions::VALUE();
}
/**
* DVARP
*
* Calculates the variance of a population based on the entire population by using the numbers
* in a column of a list or database that match conditions that you specify.
*
* Excel Function:
* DVARP(database,field,criteria)
*
* @access public
* @category Database Functions
* @param mixed[] $database The range of cells that makes up the list or database.
* A database is a list of related data in which rows of related
* information are records, and columns of data are fields. The
* first row of the list contains labels for each column.
* @param string|integer $field Indicates which column is used in the function. Enter the
* column label enclosed between double quotation marks, such as
* "Age" or "Yield," or a number (without quotation marks) that
* represents the position of the column within the list: 1 for
* the first column, 2 for the second column, and so on.
* @param mixed[] $criteria The range of cells that contains the conditions you specify.
* You can use any range for the criteria argument, as long as it
* includes at least one column label and at least one cell below
* the column label in which you specify a condition for the
* column.
* @return float
*
*/
public static function DVARP($database, $field, $criteria)
{
$field = self::fieldExtract($database, $field);
if (is_null($field)) {
return null;
}
// Return
return Statistical::VARP(self::getFilteredColumn($database, $field, $criteria));
}