(PECL trader >= 0.2.0)
trader_minus_dm — Minus Directional Movement
$high
, array $low
, int $timePeriod
= ?): array
high
高價,浮點數(shù)數(shù)組。
low
低價,浮點數(shù)數(shù)組。
timePeriod
Number of period. Valid range from 2 to 100000.
Returns an array with calculated data or false on failure.