// This is my first script. Enjoy!
// Author itisCalvin @itisCalvin on Twitter
//
//Aroon Oscillator is difference between Arron Up and Aroon Down. Normally Aroon is plotted with the two distinct lines.
//This indicator fluctuates between -100 and +100 with 0 as the mid line. When oscillator is positive there tends to 
//be upward trend bias, and downward trend bias when this oscillator is negative. The default value for this oscillator 
//is 25, while Aroon is 14.
study("Aroon Oscillator (itisCalvin)", shorttitle="Aroon Oscillator")

Period = input(25, minval=1)
AroonUp = 100 * (highestbars(high, Period+1) + Period)/Period
AroonDown = 100 * (lowestbars(low, Period+1) + Period)/Period
AroonOscillator = AroonUp - AroonDown
hline(0, linestyle=(solid))

plot(AroonOscillator, color=#E96300, style=area, transp=(70))