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



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Sorry, my bad. I misunderestood your question. I thought you 
explicitly wanted to pass a scalar, as opposed to any valid variable 
(which of course an array is).

Mike

--- In amibroker@xxxxxxxxxxxxxxx, "Mike" <sfclimbers@xxx> wrote:
>
> It would appear that you have misunderstood the return value of 
> BarsSince. BarsSince returns an array, not a scalar. So in the Buy1 
> case, you are not passing the simple value that you might think you 
> are. You would have to pass something along the lines of Ref(y, 0) 
to 
> pass the current value of y, and thus be a fair comparrison to 
> passing the scalar -5.
> 
> http://www.amibroker.com/guide/afl/afl_view.php?id=23
> 
> Mike
> 
> --- In amibroker@xxxxxxxxxxxxxxx, "chorlton_c_hardy" <chorlton-c-
> hardy@> wrote:
> >
> > 
> > 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@> 
> > 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@>
> > > 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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