The Aroon indicator attempts to identify starting trends. The indicator
consists of up and down lines, which measure how long it has been since the
highest high/lowest low has occurred in the last n periods. Developed
by Tushar Chande in 1995.
Usage
aroon(HL, n = 20)
Value
A object of the same class as HL or a matrix (if
try.xts fails) containing the columns:
aroonUp
The Aroon up indicator.
aroonDn
The Aroon down indicator.
oscillator
The Aroon oscillator (aroonUp - aroonDn).
Arguments
HL
Object that is coercible to xts or matrix and contains either a
High-Low price series, or a Close price series.
n
Number of periods to use in the calculation.
Author
Joshua Ulrich
Details
Aroon up (down) is the elapsed time, expressed as a percentage, between today
and the highest (lowest) price in the last n periods. If today's
price is a new high (low) Aroon up (down) will be 100. Each subsequent period
without another new high (low) causes Aroon up (down) to decrease by (1 /
n) x 100.