【凯尔特纳通道(Keltner Channel)】
[code]inputs: Price( Close ), Length( 20 ), NumATRs( 1.5 ), Displace( 0 ) ;
variables: var0( 0 ), var1( 0 ), var2( 0 ), var3( 0 ) ;
var0 = AverageFC( Price, Length ) ;
var1 = NumATRs * AvgTrueRange( Length ) ;
var3 = var0 + var1 ;
var2 = var0 - var1 ;
condition1 = Displace >= 0 or CurrentBar > AbsValue( Displace ) ;
if condition1 then
begin
Plot1[Displace]( var3, "UpperBand" ) ;
Plot2[Displace]( var2, "LowerBand" ) ;
Plot3[Displace]( var0, "MidLine" ) ;
if Displace <= 0 then
begin
condition1 = Price crosses over var3 ;
if condition1 then
Alert( "Price crossing over upper band" )
else
begin
condition1 = Price crosses under var2 ;
if condition1 then
Alert( "Price crossing under lower band" ) ;
end ;
end;
end ;
[/code]
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