Syntax

DI_NEG(close; high; low; period)

Arguments

The first three arguments are arrays:

• 'close' contains the closing prices
• 'high' contains the high prices
• 'low' contains the low prices

The 'period' argument defines the period for the function. It must be a constant greater than or equal to 1.

Result

The result is an array. The first 'period' elements are marked as invalid. 

Description

The -DI function is a part of the Directional Movement System developed by J. Welles Wilder. 

The system consists of three lines: 

• The Positive Direction Indicator (+DI) summarizes upward trend movement; 
• The Negative Direction Indicator (-DI) summarizes downward trend movement; 
• The Average Directional Movement Index (ADX) indicates whether the market is trending or ranging. For internal calculations the DI_NEG function uses the modified moving average.   

Related Examples

Windows Forms: Data Manipulation\Functions\Directional Movement