[amibroker] ROC since some event

[Flávio Veloso <flavso@xxxxxxxxx>]

Hi all.

I'm trying to determine the rate-of-change of an array since some event 
occured.

I intuitively tried "ROC(array, BarsSince(event))" buy AB says that 
argument #2 [of ROC()] has incorrect type. In fact, the help says that 
ROC expect an value as second parameter, but BarsSince() returns an ARRAY.

So the question is: how to use ROC() to determine the ROC from a 
specific event?

Thanks!

-- 
Flávio

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