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--- In amibroker@xxxxxxxxxxxxxxx, "Herman van den Bergen"
<psytek@xxxx> wrote:
> Tomasz,
>
> Please forgive my ignorance but I totally seem to miss the
significance of
> dynamic variables... Unless you can convince me otherwise I think I
would
> have preferred to see the introduction of traditional
multidimensional
> tables that can be used in standard math routines...why is this
better or
> more versatile in the field of technical analysis? ... I have lots
lots of
> questions:
>
> 1) Can dynamic variables be used to implement multidimensional
random access
> tables, like TableA(k,i,j) ?
> 2) Are there any limits to the number of dynamic variables we can
create?
> 3) Can dynamic variables handle only arrays or also numbers and
strings, if
> so how to define one or the other?
> 4) Can we use multiple 'subscripts' like SetVar("VarA"+i+j+k,
somenumber) to
> simulate tradional tables?
Herman,
You may define 100 periods in an empty IB window
//Master
for(i=0;i<10;i++)
{
for(j=0;j<10;j++)
{
StaticVarSet( "per"+WriteVal(i,1.0)+WriteVal(j,1.0), 10*i+j);
}
}
and then use them in other IB windows
Plot(MA(C,StaticVarGet("per04")),"["+WriteVal(StaticVarGet
("per04"),1.0)+"]",1,1);
Plot(MA(C,StaticVarGet("per40")),"["+WriteVal(StaticVarGet
("per40"),1.0)+"]",2,1);
As you see, the value of each perXX may be a meaningful expression of
i and j.
Dimitris Tsokakis
> 5) Is there any way to save them on disk?
> 6) Could you give a non-trivial example/application?
>
> many thanks for any light you can shed on this!
> herman.
> -----Original Message-----
> From: Tomasz Janeczko [mailto:amibroker@x...]
> Sent: Saturday, July 10, 2004 5:37 PM
> To: amibroker@xxxxxxxxxxxxxxx
> Subject: Re: [amibroker] Question on VarSet and VarGet for Tomasz
and
> programming gurus
>
>
> Gary,
>
> One example (trivial) application:
>
> instead of writing:
>
> C1 = Ref( C, -1 );
> C2 = Ref( C, -2 );
> C3 = Ref( C, -3 );
> C4 = Ref( C, -4 );
> C5 = Ref( C, -5 );
> C6 = Ref( C, -6 );
> C7 = Ref( C, -7 );
> C8 = Ref( C, -8 );
> C9 = Ref( C, -9 );
>
> You can now write single line that will have the same effect
>
> for( i = 1; i < 10; i++ ) VarSet( "C"+i, Ref( C, -i ) );
>
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: Gary A. Serkhoshian
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Saturday, July 10, 2004 11:17 PM
> Subject: [amibroker] Question on VarSet and VarGet for Tomasz
and
> programming gurus
>
>
> Tomasz,
>
> For us non-programmers, I get the sense of importance that
VarSet and
> VarGet offer, but not in the practical sense.
>
> For PT, is there a way to find out which positions are open,
what there
> positionscores are, etc. using these functions.
>
> I'm sure you have some very practical reasons for offering such
> functionality, but I'm not seeing it.
>
> Thanks,
> Gary
>
>
> Tomasz Janeczko <amibroker@xxxx> wrote:
> Correct Dimitris.
> StaticVarSet / StaticVarGet.
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: "DIMITRIS TSOKAKIS" <TSOKAKIS@xxxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Saturday, July 10, 2004 10:30 AM
> Subject: [amibroker] Re: Static variables
>
>
> > --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko"
<amibroker@xxxx>
> > wrote:
> > > Hello,
> > >
> > > I received the following two questions by support channel
> > > and thought that reply may interest more people:
> > >
> > > Q1. What is the difference between StaticSetVar
("x",5); and
> > x=5;
> > >
> > Tomasz,
> > I suppose you mean StaticVarSet("x",5).
> > Dimitris Tsokakis
> > > A1: Read me says:
> > > ** Static variable - the variable has static duration (it
is
> > allocated when the program begins and deallocated when the
program
> > > ends)
> > > and initializes it to Null unless another value is
specified.
> > Static variables allow to share values between various
formulas.
> > > Only NUMBER and STRING static variables are supported now
(not
> > ARRAYS).
> > >
> > > So, speaking about the difference
> > > x=5; is regular variable that "lives" only DURING
execution of the
> > formula.
> > >
> > > StaticSetVar("x",5);
> > > - gives you an access to static data storage that REMAINS
between
> > execution of formulas (as long AmiBroker is running)
> > > and is accessible from ANY formula.
> > > You can call StaticGetVar("x") from a DIFFERENT formula
and you
> > will get the value set from another formula.
> > >
> > > So Static variables are BOTH persistent (as long as
AmiBroker is
> > running) and global (in "wider" scope - between different
formulas)
> > >
> > > Static variables can be used instead of external files to
store
> > values between formula invocations.
> > >
> > >
> > > -----------
> > > Q2. Can I access vars that are defined in a DLL by using
> > StaticVarGet?
> > >
> > > A2: Only if you create them using StaticVarSet.
> > > (You can call StaticVarSet from DLL using
gSite.CallFunction)
> > >
> > >
> > > Best regards,
> > > Tomasz Janeczko
> > > amibroker.com
> >
> >
> >
> >
> > Check AmiBroker web page at:
> > http://www.amibroker.com/
> >
> > Check group FAQ at:
> http://groups.yahoo.com/group/amibroker/files/groupfaq.html
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
>
>
> Check AmiBroker web page at:
> http://www.amibroker.com/
>
> Check group FAQ at:
> http://groups.yahoo.com/group/amibroker/files/groupfaq.html
>
>
>
>
>
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