$add 18 Period Oscillator

[fanie]

Can someone please help me with the following oscillator for the
Advance and Decline issues. Symbol $ADD Shows the net difference already.
The 18 period $ADD oscillator needs to be a simple exponentially oscillator.
The value of the oscillator is calculated by the recursive formula that always says " Todays oscillator value is 90 % of yesterday's
value plus the 10% of todays value"

Thank you very much.

[ACM]

fanie
The attached efs, adapted from a script by Jason K, computes an 18 period EMA of $ADD and performs the recursive calculation you provided.
It then plots the oscillator and the Close of $ADD for the interval used in the chart.
The efs can work on both daily or intraday charts. When using the latter make sure to set the Time Template to 9:30-16:00 Eastern Time (or equivalent if in different time zone).
Alex