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                ### OBV - On Balance Volume > 函數名:OBV 名稱:On Balance Volume 能量潮 簡介:Joe Granville提出,通過統計成交量變動的趨勢推測股價趨勢 計算公式:以某日為基期,逐日累計每日上市股票總成交量,若隔日指數或股票上漲 ,則基期OBV加上本日成交量為本日OBV。隔日指數或股票下跌, 則基期OBV減去本日成交量為本日OBV 研判: 1、以“N”字型為波動單位,一浪高于一浪稱“上升潮”,下跌稱“跌潮”;上升潮買進,跌潮賣出 2、須配合K線圖走勢 3、用多空比率凈額法進行修正,但不知TA-Lib采用哪種方法 ```計算公式: 多空比率凈額= [(收盤價-最低價)-(最高價-收盤價)] ÷( 最高價-最低價)×成交量``` ```python real = OBV(close, volume) ```
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