[amibroker] Re: Passing a variable into the Ref() function

["chorlton_c_hardy" <chorlton-c-hardy@xxxxxxxxxxxxx>]

Hello Tomasz,

If Ref() accepts variable periods, can you clarify why the code below 
doesn't work?

x = IIf(H == HHV(H, 30), 1, 0);
y = BarsSince(x);
y = y*-1;

Buy1 = x AND AccDist() > Ref(AccDist(),y);
Buy2 = x AND AccDist() > Ref(AccDist(),-5);

PlotShapes( shapeUpArrow*Buy1, colorGreen, 0, L, -10 );
PlotShapes( shapeUpArrow*Buy2, colorBlue, 0, H, -10 );


The Buy2 signal will plot with no problems but the Buy1 signal won't. 
I assumed this was because of the variable y in the Ref() function. 
However, if Ref() can accept variables then can you explain what I'm 
doing wrong?

Any help much appreciated,

Chorlton 

--- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@xxx> 
wrote:
>
> Ref accepts variable periods So all these workarounds are not 
required.
> 
> Ref( C, -x ) works perfectly fine.
> 
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message ----- 
> From: "dbwyatt_1999" <dbw451@xxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Saturday, November 10, 2007 3:30 PM
> Subject: [amibroker] Re: Passing a variable into the Ref() function
> 
> 
> > Variables are arrays in AB, so Ref(Close,-x) probably would not 
> > work.  If you have a predefined set of values for x, you could 
use 
> > iif statements:
> > 
> > myValue = iif(x==5, Ref(C,-5), iif(x==10, Ref(C,-10), iif(x==15, 
Ref
> > (C,-15),Null)));
> > 
> > However the best way to access variable array index offsets is to 
use 
> > a loop:
> > 
> > i = 0;
> > x = Param("x",10,1,100,1);
> > for (i=x; i<BarCount; i++) {
> >  myValue[i] = Close[i-x];
> > }
> > 
> > Regards,
> > 
> > David
> > 
> > --- In amibroker@xxxxxxxxxxxxxxx, "chorlton_c_hardy" <chorlton-c-
> > hardy@> wrote:
> >>
> >> 
> >> Hello All,
> >> 
> >> With regard to the Ref() function in AB, is there any way to 
pass a 
> >> variable into it rather than using a specific value?
> >> 
> >> For example:
> >> 
> >> Rather than writing Ref(Close,-10), I want to write Ref(Close,-
x) 
> > where 
> >> x has been defined earlier in my code.
> >> 
> >> 
> >> Thanks in advance,
> >> 
> >> Chorlton
> >>
> > 
> > 
> > 
> > 
> > Please note that this group is for discussion between users only.
> > 
> > To get support from AmiBroker please send an e-mail directly to 
> > SUPPORT {at} amibroker.com
> > 
> > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> > http://www.amibroker.com/devlog/
> > 
> > For other support material please check also:
> > http://www.amibroker.com/support.html
> > 
> > Yahoo! Groups Links
> > 
> > 
> > 
> > 
> >
>




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