2025-07-10 15:07:31 +08:00
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from typing import List, Union
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import numpy as np
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import talib
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from src.indicators.base_indicators import Indicator
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class RSI(Indicator):
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"""
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相对强弱指数 (RSI) 指标实现,使用 TA-Lib 简化计算。
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"""
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2025-07-15 22:45:51 +08:00
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def __init__(
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self,
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window: int = 14,
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down_bound: float = None,
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up_bound: float = None,
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shift_window: int = 0,
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):
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super().__init__(down_bound, up_bound)
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2025-07-10 15:07:31 +08:00
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self.window = window
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2025-07-15 22:45:51 +08:00
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self.shift_window = shift_window
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2025-07-10 15:07:31 +08:00
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2025-07-15 22:45:51 +08:00
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def get_values(
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self,
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close: np.array,
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open: np.array, # 不使用
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high: np.array, # 不使用
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low: np.array, # 不使用
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volume: np.array,
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) -> np.array: # 不使用
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2025-07-10 15:07:31 +08:00
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"""
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根据收盘价列表计算RSI值,使用 TA-Lib。
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Args:
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close (np.array): 收盘价列表。
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其他 OHLCV 参数在此指标中不使用。
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Returns:
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np.array: RSI值列表。如果数据不足,则列表开头为NaN。
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"""
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# 使用 talib.RSI 直接计算
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# 注意:TA-Lib 会在数据不足时自动填充 NaN
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rsi_values = talib.RSI(close, timeperiod=self.window)
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# 将 numpy 数组转换为 list 并返回
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return rsi_values
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2025-07-15 22:45:51 +08:00
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2025-07-10 15:07:31 +08:00
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def get_name(self):
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2025-07-15 22:45:51 +08:00
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return f"rsi_{self.window}"
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2025-07-10 15:07:31 +08:00
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class HistoricalRange(Indicator):
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"""
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历史波动幅度指标:计算过去 N 日的 (最高价 - 最低价) 的简单移动平均。
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"""
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2025-07-15 22:45:51 +08:00
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def __init__(
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self, down_bound: float = None, up_bound: float = None, shift_window: int = 0
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):
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super().__init__(down_bound, up_bound)
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self.shift_window = shift_window
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2025-07-10 15:07:31 +08:00
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2025-07-15 22:45:51 +08:00
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def get_values(
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self,
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close: np.array, # 不使用
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open: np.array, # 不使用
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high: np.array,
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low: np.array,
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volume: np.array,
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) -> np.array: # 不使用
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2025-07-10 15:07:31 +08:00
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"""
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根据最高价和最低价列表计算过去 N 日的 (high - low) 值的简单移动平均。
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Args:
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high (np.array): 最高价列表。
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low (np.array): 最低价列表。
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其他 OHLCV 参数在此指标中不使用。
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Returns:
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np.array: 历史波动幅度指标值列表。如果数据不足,则列表开头为NaN。
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"""
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# if not high or not low or len(high) != len(low):
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# print(high, low, len(high), len(low))
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# return []
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# 计算每日的 (high - low) 范围
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daily_ranges = high - low
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# 将 numpy 数组转换为 list 并返回
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2025-07-15 22:45:51 +08:00
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return daily_ranges
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def get_name(self):
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return f"range_{self.shift_window}"
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class DifferencedVolumeIndicator(Indicator):
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"""
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计算当前交易量与前一交易量的差值。
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volume[t] - volume[t-1]。
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用于识别交易量变化的趋势,常用于平稳化交易量序列。
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"""
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def __init__(
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self, down_bound: float = None, up_bound: float = None, shift_window: int = 0
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):
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# 差值没有固定上下界,取决于实际交易量
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super().__init__(down_bound, up_bound)
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self.shift_window = shift_window
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def get_values(
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self,
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close: np.array, # 不使用
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open: np.array, # 不使用
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high: np.array, # 不使用
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low: np.array, # 不使用
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volume: np.array,
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) -> np.array:
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"""
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根据交易量计算其差分值。
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Args:
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volume (np.array): 交易量列表。
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其他 OHLCV 参数在此指标中不使用。
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Returns:
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np.array: 交易量差分值列表。第一个值为NaN。
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"""
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if not isinstance(volume, np.ndarray) or len(volume) < 2:
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return np.full_like(
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volume if isinstance(volume, np.ndarray) else [], np.nan, dtype=float
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)
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# 计算相邻交易量的差值
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# np.diff(volume) 会比原数组少一个元素,前面补 NaN
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diff_volume = np.concatenate(([np.nan], np.diff(volume)))
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return diff_volume
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def get_name(self) -> str:
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return f"differenced_volume_{self.shift_window}"
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class StochasticOscillator(Indicator):
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"""
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随机摆动指标 (%K),衡量收盘价在近期价格高低区间内的位置。
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这是一个平稳的动量摆动指标,值域在 [0, 100] 之间。
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"""
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def __init__(
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self,
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fastk_period: int = 14,
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slowk_period: int = 3,
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slowd_period: int = 3, # 在此实现中未使用 slowd,但保留以符合标准
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down_bound: float = None,
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up_bound: float = None,
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shift_window: int = 0,
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):
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super().__init__(down_bound, up_bound)
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self.fastk_period = fastk_period
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self.slowk_period = slowk_period
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self.slowd_period = slowd_period
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self.shift_window = shift_window
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def get_values(
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self,
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close: np.array,
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open: np.array, # 不使用
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high: np.array,
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low: np.array,
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volume: np.array, # 不使用
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) -> np.array:
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"""
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根据最高价、最低价和收盘价计算随机摆动指标 %K 的值。
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Args:
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high (np.array): 最高价列表。
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low (np.array): 最低价列表。
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close (np.array): 收盘价列表。
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Returns:
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np.array: 慢速 %K 线的值列表。
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"""
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# TA-Lib 的 STOCH 函数返回 slowk 和 slowd 两条线
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# 我们通常使用 slowk 作为主要的摆动指标
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slowk, _ = talib.STOCH(
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high,
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low,
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close,
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fastk_period=self.fastk_period,
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slowk_period=self.slowk_period,
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slowk_matype=0, # 使用 SMA
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slowd_period=self.slowd_period,
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slowd_matype=0, # 使用 SMA
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)
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return slowk
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def get_name(self):
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return f"stoch_k_{self.fastk_period}_{self.slowk_period}"
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class RateOfChange(Indicator):
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"""
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价格变化率 (ROC),衡量当前价格与 N 期前价格的百分比变化。
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这是一个平稳的动量指标,围绕 0 波动。
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"""
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def __init__(
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self,
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window: int = 10,
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down_bound: float = None,
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up_bound: float = None,
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shift_window: int = 0,
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):
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super().__init__(down_bound, up_bound)
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self.window = window
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self.shift_window = shift_window
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def get_values(
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self,
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close: np.array,
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open: np.array, # 不使用
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high: np.array, # 不使用
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low: np.array, # 不使用
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volume: np.array, # 不使用
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) -> np.array:
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"""
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根据收盘价计算 ROC 值。
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Args:
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close (np.array): 收盘价列表。
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Returns:
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np.array: ROC 值列表。
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"""
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roc_values = talib.ROC(close, timeperiod=self.window)
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return roc_values
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def get_name(self):
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return f"roc_{self.window}"
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class NormalizedATR(Indicator):
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"""
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归一化平均真实波幅 (NATR),即 ATR / Close * 100。
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将绝对波动幅度转换为相对波动百分比,使其成为一个更平稳的波动率指标。
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"""
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def __init__(
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self,
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window: int = 14,
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down_bound: float = None,
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up_bound: float = None,
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shift_window: int = 0,
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):
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super().__init__(down_bound, up_bound)
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self.window = window
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self.shift_window = shift_window
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def get_values(
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self,
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close: np.array,
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open: np.array, # 不使用
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high: np.array,
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low: np.array,
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volume: np.array, # 不使用
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) -> np.array:
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"""
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根据最高价、最低价和收盘价计算 NATR 值。
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Args:
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high (np.array): 最高价列表。
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low (np.array): 最低价列表。
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close (np.array): 收盘价列表。
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Returns:
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np.array: NATR 值列表。
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"""
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# 使用 TA-Lib 直接计算 NATR
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natr_values = talib.NATR(high, low, close, timeperiod=self.window)
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return natr_values
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def get_name(self):
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return f"natr_{self.window}"
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2025-07-28 14:36:58 +08:00
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class ADX(Indicator):
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"""
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平均趋向指标 (ADX),用于衡量趋势的强度而非方向。
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是区分趋势行情和震荡行情的核心过滤指标。
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"""
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def __init__(
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self,
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window: int = 14,
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down_bound: float = None, # 例如,设置 down_bound=25 可过滤出强趋势行情
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up_bound: float = None, # 例如,设置 up_bound=20 可过滤出震荡行情
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shift_window: int = 0,
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):
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super().__init__(down_bound, up_bound)
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self.window = window
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self.shift_window = shift_window
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def get_values(
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self,
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close: np.array,
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open: np.array, # 不使用
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high: np.array,
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low: np.array,
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volume: np.array, # 不使用
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) -> np.array:
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"""
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根据最高价、最低价和收盘价计算ADX值。
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"""
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adx_values = talib.ADX(high, low, close, timeperiod=self.window)
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return adx_values
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def get_name(self):
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return f"adx_{self.window}"
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class BollingerBandwidth(Indicator):
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"""
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布林带宽度,计算公式为 (上轨 - 下轨) / 中轨。
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这是一个归一化的波动率指标,用于识别波动性的收缩(Squeeze)和扩张。
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"""
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def __init__(
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self,
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window: int = 20,
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nbdev: float = 2.0, # 标准差倍数
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down_bound: float = None,
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up_bound: float = None,
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shift_window: int = 0,
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):
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super().__init__(down_bound, up_bound)
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self.window = window
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self.nbdev = nbdev
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self.shift_window = shift_window
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def get_values(
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self,
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close: np.array,
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open: np.array, # 不使用
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high: np.array, # 不使用
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low: np.array, # 不使用
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volume: np.array, # 不使用
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) -> np.array:
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"""
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根据收盘价计算布林带宽度。
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"""
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upper, middle, lower = talib.BBANDS(
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close,
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timeperiod=self.window,
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nbdevup=self.nbdev,
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nbdevdn=self.nbdev,
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matype=0 # 使用SMA
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)
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# 为避免除以0,在 middle 为0或NaN的地方,带宽也设为NaN
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bandwidth = np.full_like(middle, np.nan)
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mask = (middle > 0)
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bandwidth[mask] = (upper[mask] - lower[mask]) / middle[mask] * 100
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return bandwidth
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def get_name(self):
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return f"bbw_{self.window}_{int(self.nbdev*10)}"
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