【MultiCharts】【指標】以20根K棒算出多空平均價

以最近的20根K棒，找出 (最高價＋最低價) /2，來算出最近的平均價格
若再線上，則為多，反之，則為空


input: Barlookback(20) ; 
  
Vars: HighBand(0),LowBand(0);  

   HighBand = Highest(High,BarLookBack) ;
   LowBand = Lowest(Low,BarLookBack) ;
  
  
for Value1 =1 to  Barlookback Begin
    if Close[Value1] > HighBand then HighBand  = Close[Value1] ;
End;


Plot1((HighBand +LowBand) /2 , "NearBarHigh" ) ;