请高手把下面的通达信公式改写为 当向上箭头出现时的选股公式

Question

N:=20;P:=2;
顶:1,COLORYELLOW;
底:0,COLORRED;
VAR1:=MA(CLOSE,N);
VAR2:=VAR1+P*STD(CLOSE,N);
VAR3:=VAR1-P*STD(CLOSE,N);
布林趋势: (CLOSE-VAR3)/(VAR2-VAR3);
DRAWICON(CROSS(布林趋势,0),0,1);
DRAWICON(CROSS(1,布林趋势),1,2);

Answer 1

N:=20;P:=2;
VAR1:=MA(CLOSE,N);
VAR2:=VAR1+P*STD(CLOSE,N);
VAR3:=VAR1-P*STD(CLOSE,N);
布林趋势:=(CLOSE-VAR3)/(VAR2-VAR3);
买:CROSS(布林趋势,0);

Answer 2

VAR1:=MA(CLOSE,20);
VAR2:=VAR1+2*STD(CLOSE,20);
VAR3:=VAR1-2*STD(CLOSE,20);
向上箭头:CROSS((CLOSE-VAR3)/(VAR2-VAR3),0);
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这样少占用一点电脑资源