Hi,

Can you provide a PCF for:

-Price 1 Bar ago crossing up Chan Top Bollinger Band (20 2) ?

Thanks so much.

Assuming that you mean the close of one bar ago was above the upper bollinger band, the close of two bars ago was at or below the upper bolllinger band and the bollinger bands are simple:

C1 > AVGC20.1 + 2 * SQR(ABS(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 + C20 ^ 2 - 20 * AVGC20.1 ^ 2) / 20) AND C2 <= AVGC20.2 + 2 * SQR(ABS(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 + C20 ^ 2 + C21 ^ 2 - 20 * AVGC20.2 ^ 2) / 20)

Modelling Bollinger Bands (& Standard Deviation) in a TC PCF

More specifically the conditions are:

-close 1 Bar ago below BB

-open 1 Bar ago above BB

-close 2 Bars ago above BB

-BB are simple

Wouldn't that be crossing down instead of crossing up?

ABS((O1 + C1) / 2 - (AVGC20.1 + 2 * SQR(ABS(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 + C20 ^ 2 - 20 * AVGC20.1 ^ 2) / 20))) < (O1 - C1) / 2 AND C2 > AVGC20.2 + 2 * SQR(ABS(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 + C20 ^ 2 + C21 ^ 2 - 20 * AVGC20.2 ^ 2) / 20)

Yes, you're right it's a cross down :)

So the last PCF you posted fullfils:

-BB are simple

?

Thanks.

Yes, that's what the Condition Formula was written to identify.

Thanks Bruce.

Could you provide me also the PCF for the cross up of the Chan Bottom Bollinger Band (20 2) ?

Assuming the definition is just an inverse of your previous request:

ABS((C1 + O1) / 2 - (AVGC20.1 - 2 * SQR(ABS(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 + C20 ^ 2 - 20 * AVGC20.1 ^ 2) / 20))) < (C1 - O1) / 2 AND C2 < AVGC20.2 - 2 * SQR(ABS(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 + C20 ^ 2 + C21 ^ 2 - 20 * AVGC20.2 ^ 2) / 20)

Thanks Bruce, really appreciated.

Hello Bruce:

Is there a way to express the difference betwen closing pice (hourly) and uper bollinger band (20 hours, 3 standard dviations) as a percentage (%) of closing price? I use TC 2000 platinum. Thanks.

The following Indicator Formula should return the desired percentage. You just need to set the time frame of the formula to hourly in order for the result to be calculated using hourly bars.

100 * (C - (AVGC20 + 3 * 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) / 20) )) / C

I get a "error in formula- Syntax Error" message when I tried to copy and paste the formula in TC 2000. Thanks.

The formula is correct and should not produce an error message. What are the exact steps you are using to copy and paste the formula into TC2000?

Thanks. I think I did not copy and paste right. It works now. I appreciate your help.

You're welcome.