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I've tried the code myself and it works.
As I've said before, you are never going to have stop<=prev the very
first day since prev for the very fist date will not be defined, so
you'll have a zero! Thus, zero will remain all the way down! In the
case of the bullish stop, things are different (and that explains
you're not getting any error), you're not going to have this problem
since stop will ALWAYS be bigger than zero/not defined. If someone
can show me how to upload files, I will show the version I've sent.
Regards,
mc
P.S Oh and by the way, I don't like this 'guru'-ing calling.
--- In equismetastock@xxxxxxxxxxxxxxx, "Edmund Woltynski" <edwol@xxx>
wrote:
>
> MC
>
> Bearstop with your change still resolves to zero or false � in
essence the
> binary Stop<PREV seems to be the issue , the Bullstop & Bear stop
only
> differ in the orientation of the operators the seed information is
similar,
> why the difference in outcome?
>
> Ed
>
> -----Original Message-----
> From: equismetastock@xxxxxxxxxxxxxxx
> [mailto:equismetastock@xxxxxxxxxxxxxxx]On Behalf Of p_panther_73
> Sent: Saturday, 20 September 2008 11:13 PM
> To: equismetastock@xxxxxxxxxxxxxxx
> Subject: [EquisMetaStock Group] Re: Short side Trailing Stop
>
> When we write down 'stop>=prev' we are always going to receive a
> 'true' since prev value of stop was not defined in the very past.
> One way to solve this, is to write down:
>
> BearStop :=
> If(Stop<PREV AND Stop> InitStop, InitStop,If(stop<PREV AND
> stop<initstop,stop,
> If(Stop>=PREV,If(DayOfMonth()=day AND Month()=mnth AND
> Year()=yr,initstop,PREV),Stop*Holdingdays)));
>
> This way and if we set our date at the top of an up-trend we're
going
> to have a trailing until the trend reverses (although at this point
> our value will stay at its minimum).
> Anyway, hope this helps,
>
> Regards,
>
> mc
>
> --- In equismetastock@xxxxxxxxxxxxxxx
> <mailto:equismetastock%40yahoogroups.com> , "Edmund Woltynski"
<edwol@>
> wrote:
> >
> > Preston
> >
> > The negative is taken care of in the Bearish expression �
two
> negative is a
> > positive places it above the High.
> >
> > Bull stop indicator is simply the following and ratchets up
correctly:
> >
> > InitStop:=Input("Initial Stop",0,100000,0.50);
> >
> > Index := 100-(100/(1+( PDI(21)/ MDI(21)+0.0001)));
> > OB:= Index-70;
> >
> > Bullish:= CLOSE-(CLOSE*(OB/100));
> > Stop:= If(Bullish>=CLOSE,LOW -(Bullish-CLOSE),LOW);
> >
> > BullStop :=
> > If(Stop>PREV AND Stop>InitStop,Stop,
> > If(Stop>PREV AND Stop<InitStop,InitStop,
> > If(Stop<=PREV,PREV,Stop*Holdingdays)));
> >
> > BullStop;
> >
> >
> > Ed
> >
> > -----Original Message-----
> > From: equismetastock@xxxxxxxxxxxxxxx
> <mailto:equismetastock%40yahoogroups.com>
> > [mailto: equismetastock@xxxxxxxxxxxxxxx
> <mailto:equismetastock%40yahoogroups.com> ]On Behalf Of pumrysh
> > Sent: Saturday, 20 September 2008 9:37 AM
> > To: equismetastock@xxxxxxxxxxxxxxx
> <mailto:equismetastock%40yahoogroups.com>
> > Subject: [EquisMetaStock Group] Re: Short side Trailing Stop
> >
> > Ed,
> >
> > I actually like your thought process and would love to see the
> > bullish version. It might also help me to see the error.
> >
> > About the OS. If you take a value of 30 and subtract the index
from
> > it you will end up with a number that is less that zero most of
the
> > time. This my be part of the problem.
> >
> > We'll get it figured out.
> >
> > Preston
> >
> > --- In equismetastock@xxxxxxxxxxxxxxx
> <mailto:equismetastock%40yahoogroups.com>
> > <mailto:equismetastock%40yahoogroups.com> , "Edmund Woltynski"
<edwol@>
> > wrote:
> > >
> > > Preston
> > >
> > > This is just an indicator not a system to be displayed on a
chart.
> > So
> > > trading rules are a separate issue and relate to how you wish to
> > use any
> > > trailing stop.
> > > The indicator applied to bar that say at the start of a down
trend
> > > historically (eg input date) should show get eventually closer
to
> > the top of
> > > the bar depending on the value of the expression above ie stop.
> > >
> > > Everything works correctly except for the BearStop expression.
For
> > example
> > > Plotting a binary say "Stop<PREV AND Stop< InitStop,Stop" in a
down
> > trend
> > > always gives a value of zero and yet "Stop" is non-zero and also
> > > diminishing. For some reason these Boolean expressions seem to
not
> > evaluate
> > > remaining zero at all times regardless of Stop & InitStop
values.
> > >
> > > The converse indicator i.e. reverse the operators (eg Stop<PREV
AND
> > Stop<
> > > InitStop,Stop to Stop>PREV AND Stop> InitStop,Stop etc and
replace
> > HIGH with
> > > LOW throughout the indicator and change OS) works correctly on
the
> > long
> > > side, the trailing stop moves in steps upwards until it hugs the
> > LOWs.
> > >
> > > It seems to me that there is something peculiar in the way PREV
> > works.
> > >
> > > Ed
> > >
> > > -----Original Message-----
> > > From: equismetastock@xxxxxxxxxxxxxxx
> <mailto:equismetastock%40yahoogroups.com>
> > <mailto:equismetastock%40yahoogroups.com>
> > > [mailto: equismetastock@xxxxxxxxxxxxxxx
> <mailto:equismetastock%40yahoogroups.com>
> > <mailto:equismetastock%40yahoogroups.com> ]On Behalf Of pumrysh
> > > Sent: Friday, 19 September 2008 4:28 AM
> > > To: equismetastock@xxxxxxxxxxxxxxx
> <mailto:equismetastock%40yahoogroups.com>
> > <mailto:equismetastock%40yahoogroups.com>
> > > Subject: [EquisMetaStock Group] Re: Short side Trailing Stop
> > >
> > > Ed,
> > >
> > > I see several problems. It may take a bit before I can get it
> > > resolved.
> > >
> > > In the meantime can you give me the trading rules you wish to
> > follow?
> > >
> > > Preston
> > >
> > > --- In equismetastock@xxxxxxxxxxxxxxx
> <mailto:equismetastock%40yahoogroups.com>
> > <mailto:equismetastock%40yahoogroups.com>
> > > <mailto:equismetastock%40yahoogroups.com> , "Edmund Woltynski"
> > <edwol@>
> > > wrote:
> > > >
> > > > Hello Preston and other gurus
> > > >
> > > > I am having some issues with the PREV function (I think) in
> > > developing a
> > > > trailing stop ratchet (short side). The "BearStop" function
gives
> > > me a zero
> > > > for all cases everything else above checkout as I expect it
to. I
> > > cannot see
> > > > the flaw in my logic. Any help would be appreciated.
> > > >
> > > > Code:
> > > > Day:=Input("Day Entered Trade",1,31,19);
> > > > Mnth:=Input("Month Entered Trade",1,12,4);
> > > > Yr:=Input("Year Entered Trade",1985,2100,2004);
> > > > HoldingDays:=BarsSince(Day=DayOfMonth() AND Mnth=Month() AND
> > Yr=Year
> > > ());
> > > >
> > > > InitStop:=Input("Initial Stop",0,100000,1.52);
> > > >
> > > > Index := 100-(100/(1+( PDI(21)/ MDI(21)+0.0001)));
> > > > OS:=30-Index;
> > > >
> > > > Bearish:= CLOSE-(CLOSE*(OS/100));
> > > > Stop:= If(Bearish>=CLOSE,HIGH +(Bearish-CLOSE),HIGH);
> > > >
> > > > BearStop :=
> > > > If(Stop<PREV AND Stop< InitStop,Stop,
> > > > If(Stop<PREV AND Stop> InitStop, InitStop,
> > > > If(Stop>=PREV,PREV,Stop*Holdingdays)));
> > > >
> > > > {Plot} Bearstop;
> > > >
> > > > Kind Regards,
> > > > Ed
> > > > .
> > > >
> > >
> >
>
------------------------------------
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