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Spyros,
thank you for your input, it gives me a clear direction to explore. It's a
good way to play and learn in coding Metastock.
let me also take this opportunity to thank you for sharing your work on the
SR Zigzag related indicators.
Mekoker
the formula I posted (copy and paste from the Metastock Formula archive at
http://eis.pl/kr/AFM/index-en.html ) works in all circumstances I have
tested it - but thanks for your offer of an alternative
Daniele
----- Original Message -----
From: "SR" <raftsp@xxxxxxxxx>
To: <equismetastock@xxxxxxxxxxxxxxx>
Sent: Sunday, January 12, 2003 9:25 PM
Subject: [EquisMetaStock Group] RE:help with stop formula
> Daniele,
>
> 1. "strata" is a custom variable name. It's not a command. You could use
any
> other name in its place as long as you change all its instances, too. The
> formula's result will not change.
> The := sign is an assignment. The left part of an assignment holds the
> variable's name, which can be almost anything.
>
> 2. You re-enter the market because of your binary indicator. If the entry
> condition is still valid after the stop, it will give a new entry signal.
In
> fact, this is the case with your binary indicator: Suppose that +1 is to
> last for 10 bars.
> If 3 bars after the entry your stop condition is met, then you will have a
> temporary exit signal and on the next bar you will get a new enter long
> signal (+1) because your binary indicator still reads +1.
> The solution would be to make a ternary indicator +1 (long signal on a
> single bar) -1(short signal on a single bar) 0(no signal all the other
> time). For example instead of long:= c>mov(c,10,s) you could use
> cross(c,mov(c,10,s)). This produces only one +1 and then drops to zero.
> In this case you would enter on bar #1, then you would exit on stop 3 bars
> later and you would not be bothered with +1s again until you encounter
> the -1 signal 7 days later.
> You could also create a separate "position" formula.
>
> {**** myposition ****}
>
> EnterLongCondition:= blah ;
> EnterShortCondition := blah blah;
> StopCondition:= blah blah blah;
> myPosition:= if(EnterLongCondition,1,
> if(EnterShortCondition,-1,
> if(StopCondition,0,
> PREV)));
> MyPosition
> {********************)
>
> I hope this helps
> Spyros
>
> _______________________________
> Message: 18
> Date: Sun, 12 Jan 2003 11:14:51 +0100
> From: "Flash Gordon" <daniele.bevilacqua@xxxxxxxxxxxxx>
> Subject: help with stop formula
>
> Hi everybody.
>
> I have recently begun my first attempts coding (still working through the
> formula book) and I would like some help.
>
> I have written a simple indicator that gives me +1 or -1 to go long or
> short. On the basis of this I have developed a system that has me open
long
> or short according to the indicator signal (therefore, always in the
> market).
>
> I am now attempting to add stops. Now the two questions:
>
> 1. I have been exploring various formulas for stops, and one which I have
> found and like is the Trailing Stop by Andrzej Herman - here's the formula
>
> strata:=10;
> If(
> C=PREV,
> PREV,
> If(
> ((Ref(C,-1)<PREV)AND (C<PREV)),
> Min(PREV,C*(1+strata/100)),
> If(
> (Ref(C,-1)>PREV) AND (C>PREV),
> Max(PREV,C*(1-strata/100)),
> If(
> C>PREV,
> C*(1-strata/100),
> C*(1+strata/100)
> )
> )
> )
> )
>
> I have visually inspected with various stocks and like it, but I don't
quite
> understand the formula, as the "strata" command is unknown to me - can
> someone explain it?
> (and yes, I have looked in the manual without finding a reference for it
:-)
>
> 2. I would like to insert in the system an exit condition, whereby the
> position is ended when both Trailing Stop (above) and SAR are hit, so for
> example for close long I have
>
> (SAR( 0.020,0.2 ) AND Fml( "Trailing Stop")> L)
>
> problem is, generally the system is still giving the original signal and
> therefore it enters the market again in the previous direction the
following
> day.
>
> What I would like to do, instead, is that once both stops are hit (on the
> same day) and the system closes the position, it will wait for the next
> enter signal of the opposite direction. To repeat it with different words,
> what I want to try and do is let the system enter into a position once and
> if it gets stopped out, it wont enter another position until it gets a
> signal to enter a trade going the opposite direction.
>
> I hope this is clear.
>
> I appreciate any help on this all,
>
>
> Daniele
>
>
> [This message contained attachments]
>
>
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