Directional Movement Index; developed by J. Welles Wilder.
Object that is coercible to xts or matrix and contains High-Low-Close prices.
Number of periods to use for DX calculation (not ADX calculation).
A function or a string naming the function to be called.
Other arguments to be passed to the
DIn (positive/negative) is the
percentage of the true range that is up/down.
A object of the same class as
HLC or a matrix (if
try.xts fails) containing the columns:
The positive Direction Index.
The negative Direction Index.
The Direction Index.
The Average Direction Index (trend strength).
A buy/sell signal is generated when the +/-DI crosses up over the -/+DI, when the DX/ADX signals a strong trend. A high/low DX signals a strong/weak trend. DX is usually smoothed with a moving average (i.e. the ADX).
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