trader_var
(PECL trader >= 0.2.0)
trader_var — Variance
説明
trader_var
( array $real
[, int $timePeriod
[, float $nbDev
]] ) : array
パラメータ
real- 実数値の配列。
timePeriod- Number of period. Valid range from 2 to 100000.
nbDev
返り値
Returns an array with calculated data or false on failure.
