_SECTION_BEGIN("ADX + EMA + MACD");
// This combines three indicators into one timing Signal
//function ParamOptimize( description, default, minv, maxv, step )
//    { return Optimize(description, Param(description,default, minv, maxv, step ), minv, maxv, step ); }
tgl = ParamToggle("Result", "AND logic|Compare");
// ema 
emaPrice = ParamField("Ema Price field", 3);
PeriodShort = Param("Ema Short Periods", 5, 2, 20, 1);
PeriodLong = Param("Ema Long Periods", 15, 2, 100, 1);
pS = EMA(emaPrice , PeriodShort);
pL = EMA(emaPrice , PeriodLong);
upEma = IIf(pS > pL, 1, 0);  // fast ema is above slow, long condition
// adx di lines
range = Param("ADX Periods", 10, 2, 200, 1 );
myPdi = PDI(range );
myMdi = MDI(range );
upAdx = IIf( myPdi > myMdi, 1, 0);
// macd 
r1 = Param( "Macd Fast avg", 12, 2, 200, 1 );
r2 = Param( "Macd Slow avg", 26, 2, 200, 1 );
r3 = Param( "Macd Signal avg", 9, 2, 200, 1 ); 
myMacd = MACD(r1,r2);
mySignal = Signal(r1,r2,r3);
upMacd = IIf(myMacd  > mySignal, 1, 0);
// switch test calculation and compare the results
if(tgl)
{
myBuy = upEma AND upAdx  AND upMacd;
myShort = !upEma AND !upAdx AND !upMacd; 
}
else
{
myBuy = IIf(pS > pL AND myMacd > mySignal AND myPdi > myMdi,1,0);
myShort = IIf(pS < pL AND myMacd < mySignal AND myPdi < myMdi,1,0);
}
Buy = Cover = ExRem(myBuy, myShort);
Short = Sell = ExRem(myShort, myBuy);
Plot( Buy * C, "ADX(" + NumToStr(range,1.0) + ") EMA(" + NumToStr(PeriodShort,1.0) + "," + NumToStr(PeriodLong,1.0) +
 ") MACD(" + NumToStr(r1,1.0) + "," + NumToStr(r2,1.0) + "," + NumToStr(r3,1.0) + ") - myBuy ",  colorGreen); // a positive spike that indicates a buy or cover trade.
Plot( -Short * C , "myShort ", colorRed); 
// exploration
Filter = Buy OR Short; 
AddColumn(Close, "Close", 1.2);
AddColumn(Buy, "Buy", 1.0);
AddColumn(Short, "Short",1.0);
_SECTION_END();