Sử dụng Amibroker AFL for Commodity trading

code :

TimeFrameSet(inDaily);
DayHigh = LastValue(H);
DayLow = LastValue(L);
TimeFrameRestore();

Title = EncodeColor(colorBlue)+ "Commodities Trading System" + " - " + Name() + " - " + EncodeColor(colorRed)+ Interval(2) + EncodeColor(colorBlue) +
" - " + Date() +" - "+"\n" +EncodeColor(colorBlue) +"Op-"+O+" "+"Hi-"+H+" "+"Lo-"+L+" "+
"Cl-"+C+" "+ "Vol= "+ WriteVal(V)+"\n"+


prev=AMA2(C,1,0);
d=IIf(C>Ref(Max(Max(H,Ref(H,-20)),Max(Ref(H,-10),Ref(H,-15))),-1),Min(Min(L,Ref(L,-20)),Min(Ref(L,-10),Ref(L,-15))),
IIf(C<Ref(Min(Min(L,Ref(L,-20)),Min(Ref(L,-10),Ref(L,-15))),-1),Max(Max(H,Ref(H,-20)),Max(Ref(H,-10),Ref(H,-15))),PREV));
a=Cross(Close,d);
b=Cross(d,Close);
state=IIf(BarsSince(a)<BarsSince(b),1,0);
s=state>Ref(state,-1);
ss=state<Ref(state,-1);
sss=state==Ref(state,-1);
col=IIf(state == 1 ,51,IIf(state ==0,4,1));
Plot(C,"",Col,64);
Buy = s;
Sell = ss;
shape = Buy * shapeUpArrow + Sell * shapeDownArrow;
PlotShapes(shape, IIf(Buy,colorGreen,colorRed), 0, IIf(Buy,Low,High));
PlotShapes(IIf(Buy, shapeSquare, shapeNone),colorGreen, 0, L, Offset=-10);
PlotShapes(IIf(Buy, shapeSquare, shapeNone),colorLime, 0,L, Offset=-20);
PlotShapes(IIf(Buy, shapeUpArrow, shapeNone),colorWhite, 0,L, Offset=-15);
PlotShapes(IIf(Sell, shapeSquare, shapeNone),colorRed, 0, H, Offset=20);
PlotShapes(IIf(Sell, shapeSquare, shapeNone),colorOrange, 0,H, Offset=30);
PlotShapes(IIf(Sell, shapeDownArrow, shapeNone),colorWhite, 0,H, Offset=-25);


dist = 2.9*ATR(10);
dist1= 2.9*ATR(10);
for( i = 0; i < BarCount; i++ )
{
if( Buy[i] )
{
PlotText( "\nBuy:" + L[ i ] + "\nSL= " + (L[i]*0.9975), i, L[ i ]-dist[i], colorGreen, colorWhite );
}
if( Sell[i] )
{
PlotText( "Sell:" + H[ i ] + "\nSL= " + (H[i]*1.0025), i, H[ i ]+dist1[i], colorRed, colorWhite );
}
}



_SECTION_BEGIN("swing1");
no=20;
res=HHV(H,no);
sup=LLV(L,no);
avd=IIf(C>Ref(res,-1),1,IIf(C<Ref(sup,-1),-1,0));
avn=ValueWhen(avd!=0,avd,1);
supres=IIf(avn==1,sup,res);
a=Cross(C,supres);
b=Cross(supres,C);
style = a * styleStaircase + b * styleStaircase;
PlotShapes(a,style, IIf(a,colorGreen,colorRed), 0, IIf(a,Low,High));
Plot(supres,"Swing",colorYellow,styleStaircase);
_SECTION_END();



_SECTION_BEGIN("trend");
uptrend=PDI(20)>MDI(10)AND Signal(29)<MACD(13);
downtrend=MDI(10)>PDI(20)AND Signal(29)>MACD(13);
Plot( 2, /* defines the height of the ribbon in percent of pane width */"ribbon",
IIf( uptrend, colorGreen, IIf( downtrend, colorRed, 0 )), /* choose color */
styleOwnScale|styleArea|styleNoLabel, -0.5, 100 );
_SECTION_END();

Buy = s AND a AND uptrend ;
Short = ss AND b AND downtrend ;
Sell = ss AND b AND downtrend ;
Cover = s AND a AND uptrend ;

Buy=ExRem(Buy,Sell);
Sell=ExRem(Sell,Buy);
Cover=ExRem(Cover,Short);
Short=ExRem(Short,Cover);

Filter=Buy OR Sell;
Filter= Cover OR Short;

AddColumn( Buy, "Buy", 1);
AddColumn(Sell, "Sell", 1);
AddColumn(Close,"Close",1.2);
AddColumn(Volume,"Volume",1.0);


// Plot the Buy and Sell arrows.
shape = Buy * shapeUpArrow + Sell * shapeDownArrow;
PlotShapes(IIf(Buy, shapeSquare, shapeNone),colorGreen, 0, L, Offset=-10);
PlotShapes(IIf(Buy, shapeSquare, shapeNone),colorLime, 0,L, Offset=-20);
PlotShapes(IIf(Buy, shapeUpArrow, shapeNone),colorWhite, 0,L, Offset=-15);
PlotShapes(IIf(Sell, shapeSquare, shapeNone),colorRed, 0, H, Offset=20);
PlotShapes(IIf(Sell, shapeSquare, shapeNone),colorOrange, 0,H, Offset=30);
PlotShapes(IIf(Sell, shapeDownArrow, shapeNone),colorWhite, 0,H, Offset=-25);


//plot volume graph

// set background gradient colours
SetChartBkGradientFill( ParamColor("BgTop", ColorRGB( 172,172,172 )),ParamColor("BgBottom", ColorRGB( 102,136,187 )),ParamColor("titleblock",ColorRGB( 255,255,255 )));

GraphXSpace = 5;