Minus Directional Movement

# trader_minus_dm

(PECL trader >= 0.2.0)

trader_minus_dm — Minus Directional Movement

### 说明

function trader_minus_dm(array `$high`, array `$low`, int `$timePeriod` = ?): array

### 参数

`high`

  高价，浮点数数组。

`low`

  低价，浮点数数组。

`timePeriod`

  Number of period. Valid range from 2 to 100000.

### 返回值

Returns an array with calculated data or false on failure.

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