NN:=20; MIDA:=MA(C,NN); VART1:=POW((C-MIDA),2); VART2:=MA(VART1,NN); VART3:=SQRT(VART2); UPPERA:=MIDA+2*VART3; LOWERA:=MIDA-2*VART3; BOLL:REF(MIDA,1)COLORRED,LINETHICK2; UB:REF(UPPERA,1)COLORBLUE,LINETHICK2; LB:REF(LOWERA,1)COLORGREEN,LINETHICK2; 上穿下轨:CROSS(CLOSE,LB) AND C>REF(C,1)COLORRED; DRAWICON(上穿下轨,L*0.95,7); 昨日中轨:=REF(C,1)>BOLL; 回踩中轨:=(L-BOLL)/L<=0.01 AND (L-BOLL)/L>=-0.01 AND C>BOLL AND C>O; 中轨连涨:=UPNDAY(BOLL,3); 回踩布林中轨:回踩中轨 AND 昨日中轨 AND 中轨连涨,COLORLIRED; DRAWICON(回踩布林中轨,L*0.995,1); 收口:=(UB-LB)/LB<=0.25; 上穿轨道:=CROSS(C,BOLL) OR CROSS(C,UB); 中轨向上:=BOLL>REF(BOLL,1) OR BOLL=REF(BOLL,1); 布林收口选股:收口 AND 上穿轨道 AND 中轨向上; DRAWICON(布林收口选股,L*0.985,23); 昨日上轨:=REF(CROSS(C,UB),1); 回踩上轨:=(L-UB)/L<=0.01 AND (L-UB)/L>=-0.01 AND C>UB AND C>L; 回踩上轨选股:昨日上轨 AND 回踩上轨; DRAWICON(回踩上轨选股,L*0.975,21);