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Steve,
The sigma bands are nothing but standard deviations above and below
the price action. One way to do this is with bollinger bands. Try
this: Make a custom indicator with price and 3 BBandTop functions at
1, 2 and 3 standard deviations. Then do the same with the BBandBot
AFL function. I think you will find this to be what you want.
Ask if you run into any difficulties.
Bill
--- In amibroker@xxxxxxxxxxxxxxx, "Steve Almond" <steve2@xxxx> wrote:
> Has anyone managed to write the AFL code for Sigma bands? It seemed
simple, but was beyond me...
> Here is a reference: http://www.forextrm.com/faq.htm and a picture:
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