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David,
I think Steve's second email is a
good solution using Cross in conjunction with HHV - it allows youto
look backward in time.
I'll continue to play around as this scan it
something I will use.
Tomasz,
Can you please confirm that the Hold condition sets
the array to 1 forward in time the specified number of slots inthe
hold result array from the first position where it was set to 1 (ie true)
?
Thanks,
Geoff
<BLOCKQUOTE
>
----- Original Message -----
<DIV
>From:
David
Holzgrefe
To: <A title=amibroker@xxxxxxxxxx
href="">amibroker@xxxxxxxxxxxxxxx
Sent: Monday, May 14, 2001 10:07 AM
Subject: Re: [amibroker] ref
ok I'm concerned that if the condition changes ami will
still hold it trueeven though it is now false using the hold()."This
true result is held true over the number of periods specified even ifa
"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 forthe next condition .I guess you can see the
intent in the bow tie formula.has the ma10,ma20 ,ma30 crossed in the
last xn daysif yeshas the pull back occurredif yeshas the
higher high occurredif all 3 conditions are true then signal a
buyGeoff's multi condition does it but was looking for a cleaned
way toexpress it .Maybe i just have to nest a bunch of conditionsand
if there true nestanother.DOES THIS MAKE sense to anyone or is my
logic out of sync/* Bow Tie conditions - Short term moving average has
crossed the long termmoving average sometime in the last xn days - Add
more conditions for moredays */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 ARRAYFUNCTION Extends a "true" result of
EXPRESSION for the specified number ofperiods. This true result is held
true over the number of periods specifiedeven if a "false" result is
generated.EXAMPLE hold( cross(rsi(14),70),5 )----- Original
Message -----From: "Steve Wiser" <slwiserr@xxxx>To:
<amibroker@xxxxxxxxxxxxxxx>Sent: Sunday, May 13, 2001 8:31
PMSubject: 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 thetrue
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> ><<A
href="">http://docs.yahoo.com/info/terms/>Yahoo!
Terms of Service.>>>>>> Your use of
Yahoo! Groups is subject to <A
href="">http://docs.yahoo.com/info/terms/>>>Your
use of Yahoo! Groups is subject to the <A
href="">Yahoo! Terms of Service.
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