赢彩专家app:布林通道交易系统

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// 名称: 布林通道
Params
           Numeric Length(20);
           Numeric Offset(2);    
Vars
           NumericSeries UpLine; //上轨
           NumericSeries DownLine; //下轨
           NumericSeries MidLine; //中间线
           Numeric Band;
           Bool LongCon;
           Bool ShortCon;Begin
           MidLine = AverageFC(Close,Length);//中间线
           Band = StandardDev(Close,Length,2); //标准差
           UpLine = MidLine + Offset * Band;//上轨
           DownLine = MidLine - Offset * Band; //下轨
           LongCon = CrossOver(Close,DownLine);//多头条件
           ShortCon = CrossUnder(Close,UpLine);//空头条件
           if((LongCon && MarketPosition!=1) || (CrossOver(Close,MidLine) && MarketPosition==1))
           {
                      Buy(1,NextOpen,True);
           }
           Else If((ShortCon && MarketPosition!=-1) || (CrossUnder(Close,MidLine) && MarketPosition==-1))
           {
                      SellShort(1,NextOpen,True);
           }
           If(MarketPosition==1 && CrossUnder(Close,MidLine))
           {
                      Sell(0,NextOpen,True);
           }
           Else If(MarketPosition==-1 && CrossOver(Close,MidLine))
           {
                      BuyToCover(0,NextOpen,True);
           }
End 
  1、价格由下向上穿越Down线时,可视为买进信号。相反视为卖出信号。
  2、价格由下向上穿越中间线时,则有可能加速上行,是加仓买进的信号。中线也为止损线。