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--- In equismetastock@xxxxxxxxxxxxxxx, "Roy Larsen" <rlarsen@xxxx>
wrote:
> Hi Harry
>
> This will work as long as Perx is a "constant" variable. By that I
>mean that it does not vary at
> different points across the chart.
It is manually entered in an Input statement, so I had assumed it was
considered as a constant, but apparently MS doesn't see it that way.
>Surrounding, shall we say, a "fixed" variable with LastValue()
> converts it to a constant as far as MetaStock is concerned.
> Perx:=LastValue(Int(Period/4))
That works great. I'll stick that tip away in my memory bank.
>>I'm not sure that the Int() function is
> necessary, but either that or Floor() should ensure that you
>eliminate any fractions.
>
I'm not sure either. From my initial testing, it appears that without
Int(), MS rounds the value calculated by Ref(), and then selects the
appropriate bar. I was concerned that not having a whole number might
cause some problems with MS, which is why I thought about adding Int
(). My formula is somewhat arbitrary, so as long as MS performs the
calculation, it doesn't really matter to me if the bar/date is
exactly
correct or not.
>
Harry
>
>
>
>
>
> ----- Original Message -----
> From: "bex1210" <hmw3@xxxx>
> To: <equismetastock@xxxxxxxxxxxxxxx>
> Sent: Friday, February 18, 2005 1:50 PM
> Subject: [EquisMetaStock Group] Interger and Reference functions
>
>
> >
> >
> > I have MS 8.01, EOD. I am getting an error with a formula that I
don't
> > understand, and thought someone might be able to put me on the
correct
> > path.
> >
> > Lets say that I have a formula which looks like this:
> >
> > Period:=Input("Periods",2,1000,100);
> > Perx:=(Period/4);
> > Price1:=Ref(C,-3*Perx)-Ref(C,-Period);
> > etc, etc
> >
> > This works just fine in MS. However, since "Perx" may not be a
whole
> > number, I tried to substitute the following for line 2, above.
> > Perx:=Int(Period/4);
> >
> > When I do this, MS will not accept the formula. The cursor stops
just
> > after "Ref(C, " , and the error message says that "This variable
or
> > expression must contain only constant data".
> >
> > Clearly "Perx" is a variable no matter whether it contains Int()
or
> > not. What am I missing here, and how can I assure that "Perx" is
> > always a whole number?
> >
> > I also substituted ValueWhen () for Ref (), but got the same error
> > message.
> >
> > Thanks for your help,
> >
> > Harry
> >
> >
> >
> >
> >
> >
> >
> >
> > ------------------------------------------------------------------
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> >
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> >
> >
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