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Metastock formulas used in TREND TRADING


GUPPY MULTIPLE MOVING AVERAGE EXPERT FOR METASTOCK

The formulas included at the end of Chapter 19 are available direct from wilsontechstats.com

CLASSIC DARVAS BOX FORMULAS FOR METASTOCK

These formulas were developed by Matthew Ford. They provide a method of plotting the parameters of the Classic Darvas Box in Metastock. If you are unsure about how to copy and paste these in Metastock, please follow this link for detailed instructions. (Right click on the link, and select SAVE TARGET AS. This will download the PDF file.)

The first formula is "Darvas High" which identifies new period highs followed by three lower highs.

Name of Indicator:  Darvas High

Formula:

Periods:=100; { this is the only place the number of periods is set}

If((Ref(H,-3) >= Ref(HHV(H,Periods),-4))

       AND Ref(H,-3) > Ref(H,-2)

       AND Ref(H,-3) > Ref(H,-1)

       AND Ref(H,-3) > H,

   Ref(H,-3), PREVIOUS );

Name of Indicator:  New Darvas High

Formula:

dh:= Fml("Darvas High");

def:=IsDefined(dh) AND IsDefined(Ref(dh,-2));

(def AND Ref(def,-1)=0) + (dh AND Ref(dh,-1)<>dh);

Name of Indicator:  New Darvas Low

Formula:

dh:= Fml("Darvas High");

ndl:=(Ref(L,-3) < Ref(L,-2) AND Ref(L,-3) < Ref(L,-1)

AND Ref(L,-3) < L AND Ref(H,-2) < dh

AND Ref(H,-1) < dh AND H < dh);

def:=IsDefined(dh) AND IsDefined(Ref(dh,-1));

(def AND Ref(def,-1)=0)+ (ndl AND (Ref(ndl,-1) < 1))

 

Name of Indicator:  Darvas Low

Formula:

If( Fml("New Darvas Low") , Ref(L,-3),  PREVIOUS);

Name of Indicator:  Darvas Box End

Formula:

end:=BarsSince(Fml("New Darvas High")) <

    BarsSince(Ref(Fml("New Darvas Low"),-1));

def:=IsDefined(end) AND IsUndefined(Ref(end,-1));

(def AND Ref(def,-1)=0)+ (end AND Fml("New Darvas Low"))

We are now in a position to plot the High and Low of the Darvas box.

Name of Indicator:  Darvas Box High

Formula:

dbe:=Fml("Darvas Box End");

dbhi:=If(dbe AND IsDefined(Ref(dbe,-1)),  Fml("Darvas High"), PREVIOUS);

If(dbhi=0,H+0.0000001,dbhi)

Name of Indicator:  Darvas Box Low

Formula:

dbe:=Fml("Darvas Box End");

bl:=If(dbe AND IsDefined(Ref(dbe,-1)),  Fml("Darvas Low"), PREVIOUS);

If(bl=0,L-0.0000001,bl)

Next we need to develop the Sell Indicator.  First we look for possible sell signals.

Name of Indicator:  Darvas Poss Sell

Formula:

dsl:=L < Fml("Darvas Box Low");

def:=IsDefined(dsl) AND IsDefined(Ref(dsl,-1));

(def AND Ref(def,-1)=0)+(dsl AND (Ref(dsl,-1)<dsl))

Name of Indicator:  Darvas Sell

Formula:

sell:=BarsSince(Fml("Darvas Box End")) <

BarsSince(Fml("Darvas Poss Sell"));

def:=IsDefined(sell) AND IsDefined(Ref(sell,-1));

((def AND Ref(def,-1)=0) + (sell = 0 AND Ref(sell,-1)=1))

Name of Indicator:  Darvas Buy

Formula:

dc:= Fml("darvas sell");

{ change the following line to H>Fml("Darvas Box Hi") .. for Classic Darvas}

db:= C>Fml("Darvas Box Hi") AND

           (BarsSince(Fml("darvas box end")) < BarsSince(Fml("darvas sell")));

dto:=If(db AND PREVIOUS=0,1,If(dc,0,PREVIOUS));

dto AND (Ref(dto,-1) =0)

Using these formulas it is simple to create a new Metastock Expert Advisor for Darvas.   Create a New advisor, call it Darvas and fill in the following tabs

For the Trends tab I used the somewhat arbitrary

Bullish    C >=  Fml("Darvas Box Low");

Bearish    C < Fml("Darvas Box Low");

For Symbols tab use

Buy: up arrow graphic, formula  Fml("Darvas Buy")

Sell: down arrow graphic, formula  Fml("Darvas Sell")

For Alerts tab use

Buy: formula  Fml("Darvas Buy") and some suitable text message such as "buy on next open"

Sell: formula  Fml("Darvas Sell") and some suitable text message such as "sell on next open"


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