{写通达信指标：昨日阴线，今日是阳K线，但K线是低开，收盘价小于昨日阴线实体的一半，颜色用紫色显示}昨日阴线:=REF(C今日阳线:=C>O;低开:=O较大值:=REF(MAX(C,O),1);较小值:=REF(MIN(C,O),1);实体一半:=C<(较大值+较小值)/2,NODRAW;紫色K线:STICKLINE(昨日阴线 AND 今日阳线 AND 实体一半,O,C,3,0)COLOR871F78;
