说明:1、三连阴,且每天跌幅1%以上或者5天跌幅10%以上;
2、前四天中至少有一天跌幅在4%以上;
3、当天创出5天来得新低;
4、当天开盘价或者最低价比前一天的收盘价低1.5以上;
5、当天收盘价(盘中价)比收盘价高3%以上;
AA:=ref(close,4)/ref(open,4);
BB:=ref(close,3)/ref(open,3);
CC:=ref(close,2)/ref(open,2);
DD:=ref(close,1)/ref(open,1);
Ta:=BB<0.99 AND CC<0.99 AND DD<0.99;
Tb:=ref(close,1)/ref(CLOSE,5)<0.90;
T1:=Ta OR Tb;
T2:=AA<0.96 OR BB<0.96 OR CC<0.96 OR DD<0.96;
T3:=OPEN/ref(close,1)<0.985 OR LOW/ref(close,1)<0.985;
TC:=LLV(LOW,5);
T4:=LOW=TC;
T5:=CLOSE/OPEN>1.03;
MR:=T1 AND T2 AND T3 AND T4;
买入:filter(MR,1);