说明：只有经过长期实践和在牛、熊市中经得起时间考验的指标才是好指标。能够精确抓住庄家的启涨与下跌，简单易懂，慢慢揣摩，必有收获……。

{顶底趋势}
N:=3;{原码 P1:=3;} A1:=REF(H,N)=HHV(H,2*N+1); B1:=FILTER(A1,N); C1:=BACKSET(B1,N+1); D1:=FILTER(C1,N);{高点} A2:=REF(L,N)=LLV(L,2*N+1); B2:=FILTER(A2,N); C2:=BACKSET(B2,N+1); D2:=FILTER(C2,N);{低点} E1:=(REF(LLV(L,2*N),1)+REF(HHV(H,2*N),1))/2; E2:=(H+L)/2;{高低点出现在同一K线上时可作取舍} H1:=(D1 AND NOT(D2 AND E1>=E2)) OR ISLASTBAR OR BARSCOUNT(C)=1; L1:=(D2 AND NOT(D1 AND E1<E2));  H2:=D1 AND NOT(D2 AND E1>=E2); X1:=REF(BARSLAST(H1),1)+1; F1:=BACKSET(H1 AND COUNT(L1,X1)>0,LLVBARS(IF(L1,L,10000),X1)); G1:=F1>REF(F1,1); I1:=BACKSET(G1,2); LD:=I1>REF(I1,1),LINETHICK0;{过滤后低点} L2:=LD OR ISLASTBAR OR BARSCOUNT(C)=1; X2:=REF(BARSLAST(L2),1)+1; F2:=BACKSET(L2 AND COUNT(H2,X2)>0,HHVBARS(IF(H2,H,0),X2)); G2:=F2>REF(F2,1); I2:=BACKSET(G2,2); HD:=I2>REF(I2,1),LINETHICK0;{过滤后高点}  R1:=BACKSET(ISLASTBAR,BARSLAST(HD)+1); S1:=R1>REF(R1,1); {前一高} T1:=BACKSET(ISLASTBAR,BARSLAST(LD)+1); U1:=T1>REF(T1,1); {前一低} R2:=BACKSET(S1,REF(BARSLAST(HD),1)+2); S2:=R2>REF(R2,1); {前二高} T2:=BACKSET(U1,REF(BARSLAST(LD),1)+2); U2:=T2>REF(T2,1); {前二低} T3:=BACKSET(U2,REF(BARSLAST(LD),1)+2); U3:=T3>REF(T3,1); {前三低} T4:=BACKSET(U3,REF(BARSLAST(LD),1)+2); U4:=T4>REF(T4,1); {前四低} R3:=BACKSET(S2,REF(BARSLAST(HD),1)+2); S3:=R3>REF(R3,1); {前三高} R4:=BACKSET(S3,REF(BARSLAST(HD),1)+2); S4:=R4>REF(R4,1); {前四高} ★压力1:DRAWLINE(S2,H,S1,H,1),COLORMAGENTA,LINETHICK1;         ★支撑1:DRAWLINE(U2,L,U1,L,1),COLOR8FBC8F,LINETHICK1; ★压力2:DRAWLINE(S3,H,S2,H,1),COLORFF8000;   ★支撑2:DRAWLINE(U3,L,U2,L,1),COLOR99CC32;          ★压力3:DRAWLINE(S4,H,S3,H,1),COLOR0000FF; ★支撑3:DRAWLINE(U4,L,U3,L,1),COLOR00FF7F;  DRAWICON(S2,H*1.01,10); DRAWICON(S3,H*1.01,10); DRAWNUMBER(S2,H*1.02,H),COLORCFB53B; DRAWNUMBER(S1,H*1.02,H),COLORCFB53B; DRAWNUMBER(S3,H*1.02,H),COLORCFB53B;  DRAWICON(U1,L*0.99,11); DRAWICON(U2,L*0.99,11); DRAWICON(U3,L*0.99,11);DRAWICON(U4,L*0.99,11); DRAWNUMBER(U1,L*0.98,L),COLORCYAN; DRAWNUMBER(U2,L*0.98,L),COLORCYAN; DRAWNUMBER(U3,L*0.98,L),COLORCYAN; DRAWNUMBER(U4,L*0.98,L),COLORCYAN;