阳线:=c>o and c>ref(c,1);阴线:=o>c and c(c,1);选股a:阴线 and ref(阴线,1)and ref(阳线,2)and ref(阴线,3);选股b:barslastcount(阴线>0)=3 and ref(阳线,3)and ref(阴线,4)and ref(阴线,5)and ref(阳线,6)and ref(阴线,7);
value_a:=(/)*100;value_b:=(value_a,(value_a,1))=value_a;value_c:=(value_a,2)=value_a;value_d:=(close,(close,1))=close;xg:value_b and value_c and value_d;