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Registered User
Joined: 12/17/2004
Posts: 3
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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
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Worden Trainer
Joined: 10/1/2004
Posts: 4,308
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(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!
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Registered User
Joined: 10/7/2004
Posts: 799
Location: Duluth, GA
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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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