[EquisMetaStock Group] Re: This variable or expression must contain only constant data

["Jose Silva" <josesilva22@xxxxxxxxx>]

Steve, beware of variable Ref() functions - the variable lookback 
often interferes with previous lookback plots, and can give strange or 
unexpected results.

Anyway, here's your code using Patrick's Forum Dll:

---8<--------------------------------
{ Forum DLL available for free at:
  http://forum.equis.com }

{Get the highest close in most recent x bars}
x:=5;

{LLV in the preceding x bars}
y:=3;

index:=BarsSince(C=HHV(C,x));
tmpLLV:=
 LLV(ExtFml("ForumDLL.VarREF",L,-index),y);

tmpLLV
---8<--------------------------------


jose '-)
http://www.metastocktools.com



--- In equismetastock@xxxxxxxxxxxxxxx, pumrysh <no_reply@xxxx> wrote:
> Steve,
> 
> This is exactly the reason why variable DLL's have been created. Try 
> the Equis forum DLL. 
> ExtFml( "ForumDLL.VarREF", Data Array, Variable Period)
> 
> It should allow you to use a variable period.
> 
> Preston
> 
>  
> 
> --- In equismetastock@xxxxxxxxxxxxxxx, Stephen Dawson <dawsonsg@xxxx
> 
> wrote:
> > 
> > Hi Guys,
> > 
> > What I am trying to do is;
> > 1. Get the highest close in the preceding x bars (including the 
> current bar). 
> > 2. Once I have that, I want to get the lowest low value of the 
> preceding y bars before that. 
> > 
> > I have written the following four lines of code which I though 
> would have achieved that (or pretty close to it).
> > 
> > {Get the highest close in most recent x bars}
> > x:=5; 
> > 
> > {LLV in the preceding x bars}
> > y:=3;  
> > 
> > index:=BarsSince(C=HHV(C,x))*(-1);
> > tmpLLV:=LLV(Ref(L,index),y);
> > tmpLLV
> > 
> > 
> > There is probably an error in the last line that I may be a bar or 
> two out. The issue I having is that the Ref(L,index)in the last 
line. 
> I am ghetting the error "This variable or expression must contain 
> only constant data."
> > 
> > If I place a number where the index variable is the code saves. As 
> it is above though I am getting the constant data error message.
> > 
> > If someone could offer apointer or two on how to get around this 
> I'd appreciate it.
> > 
> > Regards
> > Steve





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