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I'm not sure if this will help you but it helped me on a similar
problem. Can you use the Barssince function to do the checks?
I'm also looking for a simple way to count occurances of certain
other happenings back through time without having to write repeated
conditions or ref calls as well. For example, I'd like to know how
many days in the last 45 days Chaiken MF is greater than zero and how
many are less than zero...
Brett
--- In amibroker@xxxx, "David Holzgrefe" <dtholz@xxxx> wrote:
> ok I'm concerned that if the condition changes ami will still hold
it true
> even though it is now false using the hold()
> ."This true result is held true over the number of periods
specified even if
> a "false" result is generated. "
>
>
> I don't wish to extend the condition forcing a false signal.
> What I wanted was if condition x is meet then as long as its true
look for
> the next condition .
> I guess you can see the intent in the bow tie formula.
>
> has the ma10,ma20 ,ma30 crossed in the last xn days
> if yes
> has the pull back occurred
> if yes
> has the higher high occurred
> if all 3 conditions are true then signal a buy
>
> Geoff's multi condition does it but was looking for a cleaned way
to
> express it .
> Maybe i just have to nest a bunch of conditions and if there true
nest
> another.
>
> DOES THIS MAKE sense to anyone or is my logic out of sync
>
> /* Bow Tie conditions - Short term moving average has crossed the
long term
> moving average sometime in the last xn days - Add more conditions
for more
> days */
>
> cond1=cross (ma(close, 10 ),ema (close, 30));
> cond2=ref(cross (ma(close, 10 ),ema (close, 30)),-1)>0;
> cond3=ref(cross (ma(close, 10 ),ema (close, 30)),-2)>0;
> cond4=ref(cross (ma(close, 10 ),ema (close, 30)),-3)>0;
> cond5=ref(cross (ma(close, 10 ),ema (close, 30)),-4)>0;
> cond6=ref(cross (ma(close, 10 ),ema (close, 30)),-5)>0;
> cond7=ref(cross (ma(close, 10 ),ema (close, 30)),-6)>0;
> cond8=ref(cross (ma(close, 10 ),ema (close, 30)),-7)>0;
> cond9=ref(cross (ma(close, 10 ),ema (close, 30)),-8)>0;
> cond10=ref(cross (ma(close, 10 ),ema (close, 30)),-9)>0;
>
>
> SYNTAX hold( EXPRESSION, periods )
> RETURNS ARRAY
> FUNCTION Extends a "true" result of EXPRESSION for the specified
number of
> periods. This true result is held true over the number of periods
specified
> even if a "false" result is generated.
> EXAMPLE hold( cross(rsi(14),70),5 )
>
> ----- Original Message -----
> From: "Steve Wiser" <slwiserr@xxxx>
> To: <amibroker@xxxx>
> Sent: Sunday, May 13, 2001 8:31 PM
> Subject: Re: [amibroker] ref
>
>
> > David:
> >
> > Check out the function "Hold". I think this will do what you are
asking.
> >
> > Steve
> >
> >
> > HOLD:
> >
> > SYNTAX hold( EXPRESSION, periods ) RETURNS ARRAY FUNCTION
> >
> > Extends a "true" result of EXPRESSION for the specified number of
periods.
> >
> > This true result is held true over the number of periods
specified even if
> > a "false" result is generated.
> >
> > EXAMPLE hold( cross(rsi(14),70),5 )
> >
> >
> > At 08:29 PM 5/13/01 +1000, you wrote:
> > >TJ is there a way for ami to look for a condition true over xn
periods
> > >
> > >eg
> > >
> > >ref(cross (ma(close, 10 ),ema (close, 30)),-10)>0;
> > >
> > >so that ami look for the true condition over the last 10 periods
> > >no just 10 periods ago ?
> > >
> > >may have asked this before
> > >
> > >
> > >Thanks David
> > >
> > >Your use of Yahoo! Groups is subject to the
> > ><http://docs.yahoo.com/info/terms/>Yahoo! Terms of Service.
> >
> >
> >
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >
> >
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