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Ly,
In case this is still regarding your post in message #118399 (how to
trade only top percentile items under multiple criteria), I've gone
and added a possible solution to that one for you.
No, it's not a generic solution to extra data per symbol. But, maybe
it will help for your percentile quest :)
Mike
--- In amibroker@xxxxxxxxxxxxxxx, "loveyourenemynow"
<loveyourenemynow@xxx> wrote:
>
> For convenience I would like to store some extra info for each
symbol,
> and I would like it to be a vector, having a value for each bar,
which
> could be accessed at any time via foreign functions.
> At the moment this is possible only for OHLCV ,and I think those
> variable are protected).
> I could create an extra ticker for each symbol,in which to store up
> to 5 info(using OCHLV), but I was thinking if there is a better way.
>
> Basically it is equivalent to set up a table, so it can be achieved
by
> using an external plugin or object, but even in that case I would
need
> to store at least one info(a handle) to link to the correct
row/column
> in the external table, so at least one extra info is necessary any
> way(unless the symbol is used but that you need a system to manage
not
> numerical indices for arrays, like a string list of this type
> sym1,1,sym2,2 to scan through to get the right index)
>
> All this is rather cumbersome but conceptually is simply the use of
> matrices.
>
> This is a very general problem, which if solved allows to do
> basically to do anything we want with vectors and matrices, and it
is
> also a major limitation.
> Also a related question: when addcomposite is used on different time
> frames does it have to be "scanned" each time in advance.
> I thought time compression would automatically take care of it if
> calculated just once at the lowest time resolution but I doens't
seem so.
>
> Thanks
> Ly
>
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