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Hi Dave,
Sunday, October 19, 2003, 10:56:14 PM, you wrote:
DM> I'm a little confused about the periods and TEMA/MA overlays
DM> you're suggesting though. I started w Steve Wiser's AFL from the
DM> AB library, cleaned up a bit.
It's been a while since I set this up, and I'd forgotten myself that
I had massaged that code a little bit. Here is the code I use
directly from my charts:
Yuki
MaxGraph=14;
A=(H+L+2*C);
B=EMA((HHV(H,2)-LLV(L,2)),21);
BuyP=
/*{BuyPower}*/
V/EMA(V,21) * ((A>=Ref(A,-1)) +(A<Ref(A,-1)) / exp((0.375 * (A+Ref(A,-1)) /B ) *(Ref(A,-1)-A) / A));
SellP =
/*{SellPressure}*/
V/EMA(V,21) * ((A<=Ref(A,-1)) + (A>Ref(A,-1)) / exp((0.375 * (A+Ref(A,-1)) / B ) * (A-Ref(A,-1)) / Ref(A,-1)));
mabp=EMA(BuyP,21);
masp=EMA(SellP,21); /*{smooth Selling Pressure}*/
divsor=IIf(mabp>masp,mabp,masp); /*{BP:SP ratio}*/
divend=IIf(mabp<masp,mabp,masp); /*{biggest=divisor}*/
var2=1-(divend/divsor); /*{adjust ratio to plot in}*/
var3=IIf( (masp>mabp) , -var2 , var2 ) ; /*{range -100 to 100}*/
var4=var3*100;
DI = var4;
Graph1=TEMA(DI,21);
Graph1Color=32;
Graph1Style=styleLine=1;
Graph2=EMA(TEMA(DI,21),30);
Graph2Color=29;
Graph2Style=styleLine=1;
Title="TEMA Demand Index(21)"+EncodeColor(colorRed)+WriteVal(Graph1)+EncodeColor(colorBlack)+" EMA(30)"+EncodeColor(colorBlue)+WriteVal(Graph2);
//end
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