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Right on.
Plus, of course, dynamic tensors.
I'm sure it's more interesting, if less profitable, than trading.
----- Original Message -----
From: "loveyourenemynow" <loveyourenemynow@xxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Thursday, January 10, 2008 12:54 AM
Subject: [amibroker] Re: extra info for each symbol for each bar,
addcomposite on different timeframe
> Hi Mike,
> thank you for your link.
> I will try to look at it more carefully later, but just as a general
> solution of the problem a function could be created to simulate
> matrices of dimension 6(OHLCVI) X BarNumber (is new symbols can be
> created from OLE)
> By naming appropriately the new symbol, it can be related to the old
> one via naming convention, and in principle also multidimensional
> array could be handled by dynamically naming the symbols corresponding
> to the dimensions (which is a way to implement matrices in AFL as
> Tomasz pointed out somewhere)
> Or may be the function could just work in terms of dynamically
> variables for ex:
> a[2,2] -? a_2_2
> so tha for example
>
> set(x,i,j,value){ varset(x+"_"+i+"_"+j,value);}
> get(x,i,j){ return varget(x+"_"+i+"_"+j);}
> (this is a just an ex, the syntax could be woring, but the idea is there)
>
> so a[2,2]=5 would be set(a,2,2,5);
> and a[2,2] get(a,2,2)
>
> using the symbol for a u immediately get the required extrad field per
> symbol provided you loop through all the bars and set(sym,i)
>
> setA would be for vectors, setM for matrices
> setM3 for tridimensional ararys and so ..
>
> i would be nice to also write some other functions like vectorial or
> matrices opeerations
>
> I am sure somebody has already done that ...
>
> functions to get rows and columns could also be easly coded.
> if operators could be overloaded it would be nice to code a[2,2]
> directly ..
>
>
> I will look into your code and thank you again
>
> Ly
>
>
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, "Mike" <sfclimbers@xxx> wrote:
>>
>> 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@> 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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