Preston
The focus is on the structure BearStop, the input from the Stop _expression_
is as expected non-zero. The code to that point is correct. The structure of
BearStop is similar to BullStop –
mirror expressions, one works the other does not, and the only difference is
that the operators are reversed. The inputs from Stop in both cases are non-zero
and should resolve to either a value of the variables “InitStop” or “Stop” (or
a variant). This is not the case in BearStop, and it seems to me that there is
some issue with the way PREV behaves but I may off the mark here.
Ed
-----Original
Message-----
From: equismetastock@xxxxxxxxxxxxxxx
[mailto:equismetastock@xxxxxxxxxxxxxxx]On
Behalf Of pumrysh
Sent: Sunday, 21 September 2008
2:47 AM
To: equismetastock@xxxxxxxxxxxxxxx
Subject: [EquisMetaStock Group]
Re: Short side Trailing Stop
Ed,
Thanks for posting. It works well.
The index is a Directional Movement Index similar to and ADX but
scaled at the Index variable from 1 to 100. At the OB/OS variable
you are simply rescaling the index to a different scale. While I
understand that you are trying to set the OB/OS levels, I think the
indicator works well just as it is.
I want to keep working with this some more but I am also tight on
time this weekend.
Preston
--- In equismetastock@yahoogroups.com,
"Edmund Woltynski"
<edwol@xxx> 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@yahoogroups.com
> [mailto:equismetastock@yahoogroups.com]On
Behalf Of pumrysh
> Sent: Saturday, 20 September 2008 9:37 AM
> To: equismetastock@yahoogroups.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@yahoogroups.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@yahoogroups.com
> <mailto:equismetastock%40yahoogroups.com>
> > [mailto: equismetastock@yahoogroups.com
> <mailto:equismetastock%40yahoogroups.com> ]On Behalf Of
pumrysh
> > Sent: Friday, 19 September 2008 4:28 AM
> > To: equismetastock@yahoogroups.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@yahoogroups.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
> > > .
> > >
> >
>