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[EquisMetaStock Group] Re: magic code



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Jose,

It looks like your code seems to find when a new week starts, how 
about something that will tell me when Thursday is the last trading 
day of the week and tell me this on Thursday.


Trader Joe...

--- In equismetastock@xxxxxxxxxxxxxxx, "Jose" <josesilva22@xxxx> 
wrote:
> 
> Hg, the first bit of code is just an example to showcase the back-
> erase concept.
> 
> The "Week's end" code deals with the holiday Friday problem - it 
> doesn't need to know about holidays to determine end of week 
signals.
> Here is a more refined version:
> 
> =======================
> Week's true start & end
> =======================
> ---8<---------------------------
> 
> { Signals true start & end of week:
>    confirms signal at start of following week,
>    and signals end of week in retrospect }
> { Signals independent of any missing chart data}
> { Plot only on daily & intraday charts }
> 
> { ©Copyright 2002~2005 Jose Silva
>   The grant of this license is for personal use
>   only - no resale or repackaging allowed.
>   All code remains the property of Jose Silva.}
> { http://www.metastocktools.com }
> 
> limit:=2000;  {do not change limit year}
> LimLeap:=Frac(limit/4)=0 AND Frac(limit/100)<>0
>  OR Frac(limit/400)=0;
> NoCount:=limit*365+Int(limit/4)
>  -Int(limit/100)+Int(limit/400)-LimLeap;
> leap:=Frac(Year()/4)=0 AND Frac(Year()/100)<>0
>  OR Frac(Year()/400)=0;
> y:=Year()*365+Int(Year()/4)
>  -Int(Year()/100)+Int(Year()/400)-NoCount;
> m:=
>  If(Month()=2,31-leap,
>  If(Month()=3,59,
>  If(Month()=4,90,
>  If(Month()=5,120,
>  If(Month()=6,151,
>  If(Month()=7,181,
>  If(Month()=8,212,
>  If(Month()=9,243,
>  If(Month()=10,273,
>  If(Month()=11,304,
>  If(Month()=12,334,
>  -leap)))))))))));
> DayNr:=y+m+DayOfMonth();
> WkCount:=Int((DayNr-1)/7)+(Year()>=limit);
> 
> WeekStart:=WkCount>Ref(WkCount,-1);
> WeekEnd:=PeakBars(1,-Zig(WeekStart-.5,1,$),1)=0
>  OR Cum(1)=LastValue(Cum(1)) AND DayOfWeek()=5;
> 
> { Plot signals in own window }
> WeekStart;-WeekEnd
> 
> ---8<---------------------------
> 
> 
> jose '-)
> http://www.metastocktools.com
> 
> 
> 
> --- In equismetastock@xxxxxxxxxxxxxxx, "hg1az" <hg1az@xxxx> wrote:
> > 
> > 
> > Jose
> > 
> > How do you handle the situation if the DayOfWeek() is
> > not a trading day because of a Holiday? As I recall,
> > some MS functions are very slow. I think PREV is one
> > of these. What are the slow MS functions?
> > 
> > thanks much, hg 
> > 
> > 
> > 
> > 
> > --- In equismetastock@xxxxxxxxxxxxxxx, "Jose" <josesilva22@xxxx> 
> > wrote:
> > 
> > MetaStock generally reads and processes data from left to right.
> > 
> > MS signals are plotted sequentially in this West-East direction, 
> > and once any data is plotted on a chart, there is no way to 
coerce 
> > MetaStock to go back and erase past signals.
> > 
> > Or is there...?
> > 
> > By nesting a couple of hindsight functions such as ZigZag() and 
> > Peak(), this is now possible.
> > 
> > One of the holy grails of MetaStock coding has been to be able to 
> > modify past signals, such as (for pattern-recognition purposes):
> > "Plot last Friday only if following Monday's Close is up".
> > 
> > Here is some magic MS code that will do just that:
> > 
> > ---8<-----------------
> > 
> > { Friday signal }
> > signal:=DayOfWeek()=5;
> > 
> > { Monday up on Friday's Close }
> > confirm:=DayOfWeek()=1 AND C>Ref(C,-1);
> > 
> > { Extend signal & confirmation }
> > x:=ValueWhen(1,signal OR confirm,signal-confirm);
> > 
> > { Magic: forget last Friday if Monday is down }
> > hindsight:=PeakBars(1,Zig(x,1,$),1)=0;
> > 
> > { Plot in own window }
> > hindsight
> > 
> > ---8<-----------------
> > 
> > 
> > And here is another bit of magic - detecting and plotting true
> > end-of-week signals:
> > 
> > ==========
> > Week's end
> > ==========
> > ---8<---------------------
> > 
> > { Signals true end of week:
> >    confirms signal at start of following week,
> >    and signals end of week in retrospect }
> > { http://www.metastocktools.com }
> > 
> > day:=DayOfWeek();
> > WeekStart:=day<Ref(day,-1);
> > WeekEnd:=PeakBars(1,-Zig(WeekStart-.5,1,$),1)=0;
> > 
> > WeekEnd
> > 
> > ---8<---------------------
> > 
> > 
> > jose '-)
> > http://www.metastocktools.com








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