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Bollinger bands

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perryinvest

Posted : Wednesday, December 16, 2009 7:40:20 AM

Registered User
Joined: 9/28/2009
Posts: 7

How do I create a PCF that measures the distance between the upper and lower Bollinger bands? I want to get a % of that relative to the 20-day MA.

Bruce_L

Posted : Wednesday, December 16, 2009 8:05:31 AM

Worden Trainer

Joined: 10/7/2004
Posts: 65,138

Bollinger Bandwidth 20,20 (as percentage of center band):

400 * SQR(ABS(C ^ 2 + C1 ^ 2 + C2 ^ 2 + C3 ^ 2 + C4 ^ 2 + C5 ^ 2 + C6 ^ 2 + C7 ^ 2 + C8 ^ 2 + C9 ^ 2 + C10 ^ 2 + C11 ^ 2 + C12 ^ 2 + C13 ^ 2 + C14 ^ 2 + C15 ^ 2 + C16 ^ 2 + C17 ^ 2 + C18 ^ 2 + C19 ^ 2 - 20 * AVGC20 ^ 2) / 19) / AVGC20

You may wish to review the following:

Finding Expanding or Contracting Bollinger Bands
Modelling Bollinger Bands (& Standard Deviation) in a TC PCF
How to create a Personal Criteria Forumula (PCF)
PCF Formula Descriptions
Handy PCF example formulas to help you learn the syntax of PCFs!

-Bruce
Personal Criteria Formulas
TC2000 Support Articles

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