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Lionel
Removing the ABS() from the third last line is what gives this version of ADX its characteristic
negative swing when the trend is down.
Roy
{MetaStock code written by Equis and published in the Oct99 TASC}
{ADX Raw Signed}
Periods:= Input("Enter time periods",1,100,14);
PlusDM:= If(H>Ref(H,-1) AND
L>=Ref(L,-1), H-Ref(H,-1),
If(H>Ref(H,-1) AND L<Ref(L,-1)
AND H-Ref(H,-1)>Ref(L,-1)-L,
H-Ref(H,-1), 0));
DIPlus:= 100 * Wilders(PlusDM,Periods) /
ATR(Periods);
MinusDM:= If(L<Ref(L,-1) AND
H<=Ref(H,-1), Ref(L,-1)-L,
If(H>Ref(H,-1) AND L<Ref(L,-1)
AND H-Ref(H,-1)<Ref(L,-1)-L,
Ref(L,-1)-L, 0));
DIMinus:= 100 * Wilders(MinusDM,Periods)/
ATR(Periods);
DIDif:= {Abs}(DIPlus - DIMinus);
DISum:= DIPlus + DIMinus;
100*Wilders(DIDif/DISum,Periods;
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