三线开花指标出现“牛象”或“买点”时选股公式

编写要求：

三线开花，虽然很多人懂，但真正会应用的有几个。 请看原码。谁有选股公式，请奉上。出现“牛象”，或“买点”时。见图。谢谢！ 谢谢！ma20:ma(c,20),colorwhite,linethick2; ma120:ma(c,120),colorffcccc,linethick2; ma250:ma(c,250),colorffcc66,linethick2; 乖离线:=((c-ref(ma20,1))/20+ma20)*1.20; tt1:=cross(ma20,ma120) and cross(ma20,ma250) and v>ref(v,1); tt2:=ma20>ref(ma20,2) and v>ref(v,1) and cross(c,ma20); STICKLINE(TT1,l,l-0.09,4,0),coloryellow; DRAWTEXT(TT1,l-0.13,'金叉'),coloryellow; STICKLINE(cross(c,ma120) and cross(c,ma250) and cross(c,ma20),l,l-0.09,4,0),coloryellow; DRAWTEXT(cross(c,ma120) and cross(c,ma250) and cross(c,ma20),l-0.13,'并线开花'),coloryellow; STICKLINE(tt2,l,l-0.09,4,0),coloryellow; DRAWTEXT(tt2,l-0.13,'买点1'),coloryellow; STICKLINE(cross(c,乖离线),h,h+0.09,4,0),color00ff00; DRAWTEXT(cross(c,乖离线) ,h+0.13,'卖点'),color00ff00; STICKLINE(ma250>=ref(ma250,1) and ma20>=ref(ma20,1) and cross(c,ma250),l,l-0.09,4,0),colorffcc66; DRAWTEXT(ma250>=ref(ma250,1) and ma20>=ref(ma20,1) and cross(c,ma250),l-0.13,'牛象'),colorffcc66; STICKLINE(ma120>=ref(ma120,1) and cross(c,ma20) and cross(c,ma120) and v>ref(v,1),l,l-0.09,4,0),colorff00ff; DRAWTEXT(ma120>=ref(ma120,1) and cross(c,ma20) and cross(c,ma120) and v>ref(v,1),l-0.13,'买点2'),colorff00ff ; A1:=SUM(AMOUNT,3)/SUM(VOL,3)/100; A2:=SUM(AMOUNT,8)/SUM(VOL,8)/100; A3:=SUM(AMOUNT,21)/SUM(VOL,21)/100; DIFF:=(EMA(CLOSE,12) - EMA(CLOSE,26)); DEA:=EMA(DIFF,9); MACD:=2*(DIFF-DEA); V1:=c-(a1+ma(c,3))/2; V2:=c-(a2+ma(c,8))/2; V3:=c-(a3+ma(c,21))/2; Va1:=(C+v3-v1+macd); Va4:=(C+v2-v1+macd); 短线:EMA(Va1,6),linethick2,Coloryellow;

解答：

?MA20:=MA(C,20);

MA120:=MA(C,120);