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Hi Kevin,
If I understand well your request, I think you can achieve what you
want by simply using Alert ():
Alert(flag, 4) --> This maintains the true state of flag for 4 bars
(including the bar that caused the true state)
heitor
--- In Metastockusers@xxxxxxxxxxxxxxx, Kevin Barry
<kevin_barry@xxxx> wrote:
> Hello Roy,
>
> That's great - appreciate your help.
>
> Looking forward to your next newsletter.
>
> Regards,
> Kevin
>
>
>
> At 08:36 01/10/2004 +1200, you wrote:
> >Hi Kevin
> >
> > >>What is the most efficient way of setting a flag in Metastock?
For
> > >>example, say I want to enter a trade on a signal but only,
say, if there
> > >>has been an RSI overbought signal during the past four hours:
> > >>
> > >>flag:=If(Cross(RSI(14),70),1,0)
> > >>
> > >>initially sets the flag but it will get reset next bar. How
can I keep the
> > >>flag set at 1 for the next four hours?
> >
> >There are a number of ways you can do this. The subject will
feature in my
> >newsletter in a couple of
> >months, but for now here's some latch (flag) code that should do
the
> >trick. You've already got the
> >signal to set the latch and all you need is a signal to reset it.
For my
> >example I'll use the
> >beginning bar of the next day.
> >
> >FlagSet:=Cross(RSI(14),70);
> >FlagReset:=Hour()<Ref(Hour(),-1);
> >Flag:=BarsSince(FlagSet)<BarsSince(FlagReset);
> >Flag;
> >
> >If you want to make sure the very first signal is picked up,
perhaps for
> >back-testing, then the code
> >needs an initialisation (Init) variable added.
> >
> >FlagSet:=Cross(RSI(14),70);
> >FlagReset:=Hour()<Ref(Hour(),-1);
> >Init:=Cum(FlagSet+FlagReset>-1)=1;
> >Flag:=BarsSince(Init+FlagSet)<BarsSince(Init+FlagReset);
> >Flag;
> >
> >The same thing can be done with a little less code using PREV,
but until
> >you have a reset signal to
> >complement the set signal no flag or latch code can work.
> >
> >
> >
> >Kind regards
> >
> >Roy Larsen
> >www.metastocktips.co.nz
> >Free formulas and MS links
> >
> >
> >
> >
> >
> >
> >
> >Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >--
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