量价A:成交量*(收盘价-昨收)/昨收的历史累和 MAVPT:VPT的M日简单移动平均
1.VPT 由下往上穿越0 轴时，为买进参考信号；
2.VPT 由上往下穿越0 轴时，为卖出参考信号；
3.股价一顶比一顶高，VPT 一顶比一顶低时，暗示股价可能出现反转下跌；
4.股价一底比一底低，VPT 一底比一底高时，暗示股价可能出现反转上涨；
5.VPT 可搭配EMV 和WVAD指标使用效果更佳。
//交易量曲线
A1:IF(CLOSE>=OPEN,VOL,-VOL)/1000000,nodraw;
STICKLINE(A1>0,A1,0.9,8),colorred;
STICKLINE(A1<0,A1,0.9,8),colorgreen;
A2:=SUM(A1,55,0),colorwhite;
A21:EMA(A2,21),coloryellow;
//A22:-A21,coloryellow;
zaro:0,colorred;
DRAWTEXT(CROSS(A21,zaro),A1*5,"X"),colorred;
DRAWTEXT(CROSS(zaro,A21),A1*5,"X"),colorgreen;
B1:=CROSS(A21,zaro) AND A1>0;
DRAWTEXT(B1,A1*8,"B"),coloryellow;
B2:=CROSS(REF(A21,1),zaro) AND REF(A1,1)<0 AND A1>0;
DRAWTEXT(B2,A1*8,"B"),coloryellow;
B3:=CROSS(REF(A21,2),zaro) AND REF(A1,2)<0 AND REF(A1,1)<0 AND A1>0;
DRAWTEXT(B3,A1*8,"B"),coloryellow;
B4:=CROSS(REF(A21,3),zaro) AND REF(A1,3)<0 AND REF(A1,2)<0 AND REF(A1,1)<0 AND A1>0;
DRAWTEXT(B4,A1*8,"B"),coloryellow;
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