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Hello David,
I looked at your formula at here is my
comment:
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;
condtrue=cond1 or cond2 or cond3 or cond4 orcond5 or
cond6 and cond7 and cond8 and cond9;
All above statements could be replaced by a
single:
condtrue = hold( cross( ma( close, 10 ),ema(
close, 30 ) ), 10 );
There is no need for a magic with "reseting"
back to false.
Best regards,
Tomasz Janeczko
<BLOCKQUOTE
>
----- Original Message -----
<DIV
>From:
David
Holzgrefe
To: <A title=amibroker@xxxxxxxxxx
href="">amibroker@xxxxxxxxxxxxxxx
Sent: 14 May, 2001 11:58
Subject: Re: [amibroker] Bow Tie
so what i realy need is a way cancel thetrue if
the condition becomes false
iff var0<1 then var1 = 0 ; ???
or something similar
<BLOCKQUOTE
>
----- Original Message -----
<DIV
>From:
Tomasz Janeczko
To: <A title=amibroker@xxxxxxxxxxxx
href="">amibroker@xxxxxxxxxxxxxxx
Sent: Monday, May 14, 2001 7:21
PM
Subject: Re: [amibroker] Bow Tie
Hi,
In fact Steve's solution:
var0 = cross (ma(close, 10 ),ema (close, 30) ) ;var1 =
IIF(HHV(var0,-10) = 1,1,0) ;
is equivalent to
var1 = Hold( var0, 10 );
so var1 remains true if at least
one "true" signal occured within previous 10
bars.
Best regards,
Tomasz Janeczko
<BLOCKQUOTE
>
----- Original Message -----
<DIV
>From:
<A title=gmulhall@xxxx
href="">Geoff Mulhall
To: <A
title=amibroker@xxxxxxxxxxxxxxx
href="">amibroker@xxxxxxxxxxxxxxx
Sent: 14 May, 2001 10:06
Subject: [amibroker] Bow Tie
David,
I think Steve's second email is a
good solution using Cross in conjunction with HHV - it allows
you to look backward in time.
I'll continue to play around as thisscan 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 in the 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@xxxxxxxxxxxxxxx
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 forthenext
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 bunchof
conditions and 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 resultis
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 thinkthis
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>
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href="">http://docs.yahoo.com/info/terms/>Yahoo!
Terms of Service.>>>>>> Your
use of Yahoo! Groups is subject to <A
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