DDY的选股指标
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编写要求：

源码如下：INPUT: P1(60,0,100),P2(5,0,100),P3(10,0,100);REFLINE:0;VAR0:=MIN(COUNT(ORDER(2),0),P1);VAR1:=EMA((2 - BIGORDER(1) - BIGORDER(2)) * VOL/(ORDER(1) + ORDER(2)),60);DDY:(ORDER(2) - ORDER(1))/CAPITAL * VAR1 * 100,COLOR3D;DDY1:EMA((ORDER(2) - ORDER(1))/CAPITAL * VAR1 * 100,VAR0) * VAR0;DDY2:MA(DDY1,P2);DDY3:MA(DDY1,P3);DRAWTEXTABS(0,0,'涨跌动因');1,DOTLINE;想选出：一、DDYI>DDY2>DDY3，这样的情形，在最近20天内，至少出现4次。二、在这20天内，DDY1从未小于DDY2。谢谢！

解答：

 

 
VAR0:=MIN(COUNT(ORDER(2),0),60);
VAR1:=EMA((2 - BIGORDER(1) - BIGORDER(2)) * VOL/(ORDER(1) + ORDER(2)),60);
DDY1:=EMA((ORDER(2) - ORDER(1))/CAPITAL * VAR1 * 100,VAR0) * VAR0;
DDY2:=MA(DDY1,5);
DDY3:=MA(DDY1,10);
COUNT(DDY1>DDY2 AND DDY2>DDY3,20)>=4 AND LAST(DDY1>DDY2)>=20;
 

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