照妖镜（附源码，仅供学习交流）

WMJ1:=CLOSE/(1+(CLOSE/MA(CLOSE,240)-1)-MA(INDEXC/MA(INDEXC,240)-1,3));
WMJ2:=(CLOSE/WMJ1-1)*50;
强弱线: WMJ2, COLORGREEN;

DRAWICON(强弱线>10,10,7);