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dwgall
Posted : Wednesday, June 8, 2005 6:34:17 PM
Registered User
Joined: 12/17/2004
Posts: 3
How do I write a PCF for 9MA crossing 13MA either up or down at yesterdays close? I have tried several but none work 100 % of the time. THANKS, Don
Doug_H
Posted : Wednesday, June 8, 2005 6:41:06 PM


Worden Trainer

Joined: 10/1/2004
Posts: 4,308
(AVGC9.2 < AVGC13.2) AND (AVGC9.1 > AVGC13.1)

This formula says that the 9 was below the 13 two days ago, but at yesterday's close, the 9 was above the 13.

You could also use the method demonstrated in the following training video:

Comparing indicators using Visual Difference sorts

- Doug
Teaching Online!
Tanstaafl
Posted : Thursday, June 9, 2005 2:32:14 AM
Registered User
Joined: 10/7/2004
Posts: 799
Location: Duluth, GA
Doug's PCF will give you an UP cross.

The DOWN cross PCF would be:
(AVGC9.2 > AVGC13.2) AND (AVGC9.1 < AVGC13.1)

If you want a single PCF that fires "True" if a cross occured, but you don't care which direction, try this:
Sgn(AVGC9.2-AVGC13.2)<>Sgn(AVGC9.1-AVGC13.1)
... the SGN function returns +1/0/-1 depending on the sign of its argument

If you want a single PCF that returns +2 for a bull (up) cross OR -2 for a bear (down) cross:
Sgn(AVGC9.1-AVGC13.1) - Sgn(AVGC9.2-AVGC13.2)

Jim Dean

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