A:=(CLOSE-LLV(LOW,8))/(HHV(HIGH,8)-LLV(LOW,8))*100;

趋势线: (EMA(A,3)-50)*2;
极弱:-80;
强势:60;
风险:80;
弱势:-60;

DRAWICON(CROSS(趋势线,弱势),极弱,5);
DRAWICON(CROSS(60,趋势线),强势,6);