//------------------------------------------------------------------------------
//
// Formula Name: Ema bands
// Author/Uploader: dtholz
// E-mail: dtholz@bigpond.net.au
// Date/Time Added: 2002-03-11 04:00:54
// Origin:
// Keywords: ema trending bands
// Level: basic
// Flags: exploration,indicator
// Formula URL: http://www.amibroker.com/library/formula.php?id=169
// Details URL: http://www.amibroker.com/library/detail.php?id=169
//
//------------------------------------------------------------------------------
//
// ema offset bands easy to change 5 bands and ema period
//
// indicator and AA scan .
//
// this produced excellent results on the ASX ( aussie exchange)
//
//------------------------------------------------------------------------------
/* EMA offset bands ver 1_2
I'd guess this is NOT much different to bbands except you can contol the per % offset and the periods ema to off set*/
per=.10;//Percent placement
periods=20;//time periods
/*********************************/
emaverage= EMA(C,periods);
bandsAdjust=emaverage*per;
upperband=emaverage+bandsAdjust;
Lowerband=emaverage-bandsAdjust;
Plot(EMA(C,periods),"ema",5,1);
Plot(C,"EMA",15,64);// plots the close with candles
Plot(upperband,"upperband",3,1);// upperband
Plot(Lowerband,"lowerband",4,1);//lowerband
bCond1=Ref(Cross(C,Lowerband),-1) AND C > lowerband ;
bCond2= C > EMAverage ;// the "or" gets me into up trends
bCond3= C > EMA(C,65);// trend
Buy = bcond1 AND bCond3 OR bCond2;
scond1= Ref( Cross(emaverage,C),-1)AND C < emaverage;// close days under ema
scond2=C < Lowerband;//failed trade drops below lowerband
Sell = scond1 OR scond2;
Buy = ExRem( Buy, Sell );// removes buy/sell arrows
Sell = ExRem( Sell, Buy );
