在买卖波段中出现狂买二字时做个选股指标

编写要求：

MA5:MA(CLOSE,5),COLORFFFFFF,LINETHICK1; MA10:MA(CLOSE,10),COLOR00FFFF,LINETHICK1; MA20:MA(CLOSE,20),COLOR00FF00,LINETHICK1; MA30:MA(CLOSE,30),COLORFF00FF,LINETHICK1; MA60:MA(CLOSE,60),COLOR0000FF,LINETHICK1; MA120:MA(CLOSE,120),COLORFFFF00,LINETHICK1; ANGEL:EMA(C,2),COLOR000000; DEVIL:EMA(SLOPE(C,21)*20+C,42),POINTDOT,COLOR000000; BUY:=CROSS(ANGEL,DEVIL); SEL:=CROSS(DEVIL,ANGEL); DRAWTEXT(BUY,LOW*0.99,'狂买'),COLORF00FF0,LINETHICK5; DRAWTEXT(SEL,HIGH*1.08,'狂闪'),COLORWHITE,LINETHICK5; STICKLINE(ANGEL>=DEVIL,LOW,HIGH,0.1,0),COLORRED; STICKLINE(ANGEL>=DEVIL,CLOSE,OPEN,4.5,0),COLOR0000AA; STICKLINE(ANGEL>=DEVIL,CLOSE,OPEN,3,0),COLOR0000CC; STICKLINE(ANGEL>=DEVIL,CLOSE,OPEN,2,0),COLOR0000DD; STICKLINE(ANGEL>=DEVIL,CLOSE,OPEN,1,0),COLOR0000FF; STICKLINE(ANGEL

解答：

?ANGEL:=EMA(C,2);

DEVIL:=EMA(SLOPE(C,21)*20+C,42);