I trade stocks and ETFs off a 1 minute chart. Default setting for ParabolicSAR is 0.02 / 0.2 What i want to accomplish is make ParabolicSAR chart (on my 1 minute chart) exactly as it would, if i were running a 3 minute chart. Logic being, that in general i now use a second window, running 3 minute chart with ParabolicSAR at 0.02 / 0.2 and it serves as my trend identification. Said another way, I need to somehow adjust the 1 minute chart setting to show same results I'd get on 3 minute. I bet some of you math wizards will know exactly how? Thanks in advance!
This really isnt a math problem, it's a data problem. You want parabolic SAR on the 1 minute to be "exactly like it is" on the 3 minute. Therefore, you need to code up a parabolic SAR with a setting that allows you to tell it the timeframe. There's no mapping from PSAR_1MIN -> PSAR_3MIN. It is not as easy as some constant multiple. The bar length changes the entire calculation. To summarize, make some indicator called PSAR_3MIN that is calculated based on the 3 minute chart. Then use it on the 1 minute chart. You cannot calculate the PSAR for 3 minutes from 1 minute in any way that is reliable. The only way that is reliable is to group the 1 minute bars into 3 minute bars...and therefore you've just used the 3 minute data anyway.
In Ninjatrader you can do this. In this screen there are 2 parabolics in the 1 min chart: orange line is 1 min parabolic orange dot is 3 min parabolic You can compare the dots in 1 min with the dots in 3 min. They are exactly the same.
You can do this in MotiveWave too. Blue line is PSAR 1 min Blue dots are PSAR 3 min Lots of formatting options/preferences too.