Bollinger Bands question

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How to make a robot look for contraction/expansion in the bands. How would one define a BB band contract?

[c0d3]

contraction: when bollinger bands are heading toward each other

expansion: is when they are going away from each other

[Brian Dee - Random Trader]

T

You could compare current and recent values of the Bands or use StdDev to give a direct value of the gap

Good Luck

-BB-

[Walter]

Tom23824 wrote >>
How to make a robot look for contraction/expansion in the bands. How would one define a BB band contract?

Dear Tom,

There is a technique using Envelopes (a kind of MA channel like Bollinger Bands but using fixed percentage for upper/lower bands calculation), if upper band of Bollinger Bands is above upper band of Envelopes is consider as expansion and below as contraction vice versa. Hope this will be help.

bro.

[[Deleted]]

brother3th wrote >>
Dear Tom,

There is a technique using Envelopes (a kind of MA channel like Bollinger Bands but using fixed percentage for upper/lower bands calculation), if upper band of Bollinger Bands is above upper band of Envelopes is consider as expansion and below as contraction vice versa. Hope this will be help.

bro.

Good suggestion...will try it and use it in the EA...