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--- In amibroker@xxxxxxxxxxxxxxx, "jtelang" <jtelang@xxxx> wrote:
> sloughbridge,
>
> Following does give me a value that matches with the internal
> indicator. It was posted by someone (Chuck?) in the same thread. If
> you plot both internal and this one, do you see different values?
>
> function myAccDist() {
> ad = (((C - L) - (H - C)) / (H - L)) * V;
> return Cum(ad);
> }
I don't remember seeing that one in the thread. One problem with
Indicators, especially this one, is the different variations,
attributions, and mistakes in their geneology. I recognize your
formula above, not as Accumulation/Distribution (Williams), but as
Accumulation/Distribution Line (Chaiken). Discrepancies abound
here. If the above matches what AB does internally, thank you for
finding that! Now I can do my AccDist per Williams :)
> So once its normalized by dividing the sum over some periods by sum
> of volume over the same periods, what would one consider a "good
> value"? I understand you can compare it with another value, but
what
> I'm struggling with is determining whether the value provides a
good
> indication of decent acc or dist...
I don't know that the worth of the indicator would be in absolute
values, more than it would be in confirmation or nonconfirmation of
price action. I think a cumulative total is essentially useless, as
it totals however many bars you have loaded, but I would use it as
either a sum or normalization of a relevant number of recent bars.
Both sum or normalization would give you the same pattern/ratios,
though different values. It's the rising/falling pattern that you
would use for confirming price action. I'm sure others may use it
differently.
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