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...My example of..
BarsSince(Cum(1)=1 OR C<=3)>10;
is probably not going to deliver the result you are looking for - you will
need to modify the code for that. However use of "Cum(1)=1 OR" will address
the BarsSince failure that you have....
Actually it does give me what I want. And provdes a solution for other
instances where I want to assure that some token hasn't exceeded/ fallen
below some value for x days.
Thanks.
Ron
Roy Larsen wrote:
> Ron
>
> > I'm using the following expression:
> >
> > Barssince(C<=3)>10
> >
> > I take this to mean that in the last 10 bars the ticker has been at
> least
> 3.
> >
> > That would lead to 1's and 0's appearing in the column.
> >
> > In many cases I'm getting N/A in the column. What is triggering that?
> > What does it mean? I thought that the Barssince expression was truly
> > boolean.
>
> BarsSince() should be applied to an event (condition change) rather than
> just a condition. There are two parts to the solution. First, you must
> make
> your exploration scan more periods than the last 10 bars (which you are
> probably already doing), and second, you should add an "initialisation"
> event into the code. Cum(1)=1 is all that's required in this case. What it
> does is it forces an event that BarsSince() can use as a reference point
> when C<=3 doesn't.
>
> The problem you are seeing is because N/A will be reported by any issue
> where "C<=3" was never true during the scanned period.
>
> This trick of using an initialisation signal is also useful with
> ValueWhen()
> and one or two other functions. In most cases the value returned when the
> init signal is given is quite irrelevant - what is relevant it that
> the N/A
> period is eliminated or drastically reduced.
>
> My example of..
> BarsSince(Cum(1)=1 OR C<=3)>10;
> is probably not going to deliver the result you are looking for - you will
> need to modify the code for that. However use of "Cum(1)=1 OR" will
> address
> the BarsSince failure that you have.
>
> Roy
>
>
>
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