I am grateful to you Bruce

Yes both formulas worked for me.  I now want test the TC2k version that is already available in SF4.  I did use both formulas above in TC2K.  Since the default DPO in TC2K goes in the same direction as price (SF4 version goes down if price is going up and up if the price is going down)  I want to test the default TC2K version in SF4)

I can do formulas pretty well in TC2K but not so well in SF4.  I hope I am making sense as to my request

Bruce,

The default Detrended Price Oscillator offered in TC2000 version 18 works differently than StockFinder 4.  In TC2K the DPO rises as price rises and falls as price falls.  The DPO in SF4 does the opposite.  Can you give me the blocks formula for the TC2K DPO for SF4 so that I can study it and run some back tests on it?

You go above and beyond the call of duty.  You have been a tremendous blessing to me over the years.  Thank you so much for your help.

Wow Bruce.  After following your link and reading all of the posts, I do not think I have seen so much disagreement on what is right about a single indicator.  The reason that I ask for the SF4 formula is that it seems to identify a change in trend (short or long) which is what I am shooting for as a swing trader.  I will try both formulas to see what will work for me.  

My goal is to find indicators which are cycle based, market strength based, and momentum based. The one I lacked was the cycle based.  There are not many to choose from and the DPO seemed to fit the bill for me.

In SF4 the DPO shows the up trend whenver the indicator is below zero and a down trend when above zero.  This is unusual with indicators that use zero for the crossing point. Most work opposite from this

I have a question about the Detrended Price Oscillator.  I have been studying the DPO 3 in Stock Finder 4.  I also added the DPO 3 to TC2K version 18.  Using the SPY in SF4 the SPY would show a rising price whenever the DPO3 was below zero and a falling price whenever the DPO was above zero.  The opposite is true in TC2K V.18.  In addition, the DPO 3 in SF4 is offset by three days (daily chart) and not offset at all in TC2K.  Since it is a cycle indicator (according to SF4) I would like to add it to my indicators in my trading system.  It shows promise the way it is calculated in SF4 but not so much in TC2K.  Can you explain and give me a formula for the DPO 3 as calculated in SF4 for TC2K?

Thank you in advance for your help.

As always Bruce I am grateful for your help

As of Friday’s close (9-21-18) the closing price of the SPY was 291.99.  The Forecast Oscillator 17 on Stock Finder 4 was 0.39.  I have tried (with your help) to create a Forecast Oscillator 17 in TC 20000.  My reading on TC for the Forecast Oscillator 17 was 0.05.  Below is the formula that I used to create the F.O 17:

100 * (C - (AVGC17.1 + 7.5 * (6.5 * C1 + 5.5 * C2 + 4.5 * C3 + 3.5 * C4 + 2.5 * C5 + 1.5 * C6 + .5 * C7 - .5 * C8 - 1.5 * C9 - 2.5 * C10 - 3.5 * C11 - 4.5 * C12 - 5.5 * C13 - 6.5 * C17) / 227.5)) / C

Can you tell me what I have done wrong and why the difference between SF 4 and TC2K?

Thank you in advance for your help

Thank you Stock Guy.  I have been a TC2K customer since the 90's when the program was not real time and it was run in DOS. TC2K is still the best charting program that I have every used especially for the price. 

I am grateful to you for your help.