Hi Bruce:

      Is it possible to know what bollinger%(12,2,simple) will be at the beginning of the

next period if there is no further price change in this period?   It seems that it

would be some calculation based on the last 11 periods.

Please try the following.

(C - (SUM(C, 11) + C) / 12) / 4 / SQR(ABS((SUM(C ^ 2, 11) + C ^ 2 - (SUM(C, 11) + C) ^ 2 / 12) / 12)) + .5

Nice... It allows us to track bollinger% intra-bar. :)

Hello. I'm intrigued by this. What is this doing, please? Is this projecting a bollinger line forward?

Hello. Apologies for jumping back to this, but I was hoping to get an understanding of that this formula is doing. Thank you very much.

All it does it tell you what the simple Bollinger Band %B 12, 2.00 would be at the open of the next bar if price doesn't change between now and then.

Thank you, Bruce. I appreciate it.

You're welcome.