# pragma pylint: disable=missing-docstring, invalid-name, pointless-string-statement
# flake8: noqa: F401
# --- Do not remove these libs ---
import datetime
from typing import List, Tuple
import numpy as np # noqa
import pandas as pd # noqa
pd.options.mode.chained_assignment = None
from pandas import DataFrame, Series
from technical.util import resample_to_interval, resampled_merge
from freqtrade.strategy import IStrategy, merge_informative_pair
from freqtrade.strategy import CategoricalParameter, DecimalParameter, IntParameter
# --------------------------------
# Add your lib to import here
import talib.abstract as ta
import freqtrade.vendor.qtpylib.indicators as qtpylib
from collections import deque
class PlotConfig():
def __init__(self):
self.config = {
'main_plot': {
resample('bollinger_upperband') : {'color': 'rgba(4,137,122,0.7)'},
resample('kc_upperband') : {'color': 'rgba(4,146,250,0.7)'},
resample('kc_middleband') : {'color': 'rgba(4,146,250,0.7)'},
resample('kc_lowerband') : {'color': 'rgba(4,146,250,0.7)'},
resample('bollinger_lowerband') : {
'color': 'rgba(4,137,122,0.7)',
'fill_to': resample('bollinger_upperband'),
'fill_color': 'rgba(4,137,122,0.07)'
},
resample('ema9') : {'color': 'purple'},
resample('ema20') : {'color': 'yellow'},
resample('ema50') : {'color': 'red'},
resample('ema200') : {'color': 'white'},
},
'subplots': {
"ATR" : {
resample('atr'):{'color':'firebrick'}
}
}
}
def add_pivots_in_config(self):
self.config['main_plot']["pivot_lows"] = {
"plotly": {
'mode': 'markers',
'marker': {
'symbol': 'diamond-open',
'size': 11,
'line': {
'width': 2
},
'color': 'olive'
}
}
}
self.config['main_plot']["pivot_highs"] = {
"plotly": {
'mode': 'markers',
'marker': {
'symbol': 'diamond-open',
'size': 11,
'line': {
'width': 2
},
'color': 'violet'
}
}
}
self.config['main_plot']["pivot_highs"] = {
"plotly": {
'mode': 'markers',
'marker': {
'symbol': 'diamond-open',
'size': 11,
'line': {
'width': 2
},
'color': 'violet'
}
}
}
return self
def add_divergence_in_config(self, indicator:str):
# self.config['main_plot']["bullish_divergence_" + indicator + "_occurence"] = {
# "plotly": {
# 'mode': 'markers',
# 'marker': {
# 'symbol': 'diamond',
# 'size': 11,
# 'line': {
# 'width': 2
# },
# 'color': 'orange'
# }
# }
# }
# self.config['main_plot']["bearish_divergence_" + indicator + "_occurence"] = {
# "plotly": {
# 'mode': 'markers',
# 'marker': {
# 'symbol': 'diamond',
# 'size': 11,
# 'line': {
# 'width': 2
# },
# 'color': 'purple'
# }
# }
# }
for i in range(3):
self.config['main_plot']["bullish_divergence_" + indicator + "_line_" + str(i)] = {
"plotly": {
'mode': 'lines',
'line' : {
'color': 'green',
'dash' :'dash'
}
}
}
self.config['main_plot']["bearish_divergence_" + indicator + "_line_" + str(i)] = {
"plotly": {
'mode': 'lines',
'line' : {
"color":'crimson',
'dash' :'dash'
}
}
}
return self
def add_total_divergences_in_config(self, dataframe):
total_bullish_divergences_count = dataframe[resample("total_bullish_divergences_count")]
total_bullish_divergences_names = dataframe[resample("total_bullish_divergences_names")]
self.config['main_plot'][resample("total_bullish_divergences")] = {
"plotly": {
'mode': 'markers+text',
'text': total_bullish_divergences_count,
'hovertext': total_bullish_divergences_names,
'textfont':{'size': 11, 'color':'green'},
'textposition':'bottom center',
'marker': {
'symbol': 'diamond',
'size': 11,
'line': {
'width': 2
},
'color': 'green'
}
}
}
total_bearish_divergences_count = dataframe[resample("total_bearish_divergences_count")]
total_bearish_divergences_names = dataframe[resample("total_bearish_divergences_names")]
self.config['main_plot'][resample("total_bearish_divergences")] = {
"plotly": {
'mode': 'markers+text',
'text': total_bearish_divergences_count,
'hovertext': total_bearish_divergences_names,
'textfont':{'size': 11, 'color':'crimson'},
'textposition':'top center',
'marker': {
'symbol': 'diamond',
'size': 11,
'line': {
'width': 2
},
'color': 'crimson'
}
}
}
return self
class HarmonicDivergence(IStrategy):
"""
This is a strategy template to get you started.
More information in https://www.freqtrade.io/en/latest/strategy-customization/
You can:
:return: a Dataframe with all mandatory indicators for the strategies
- Rename the class name (Do not forget to update class_name)
- Add any methods you want to build your strategy
- Add any lib you need to build your strategy
You must keep:
- the lib in the section "Do not remove these libs"
- the methods: populate_indicators, populate_buy_trend, populate_sell_trend
You should keep:
- timeframe, minimal_roi, stoploss, trailing_*
"""
# Strategy interface version - allow new iterations of the strategy interface.
# Check the documentation or the Sample strategy to get the latest version.
INTERFACE_VERSION = 2
# Minimal ROI designed for the strategy.
# This attribute will be overridden if the config file contains "minimal_roi".
minimal_roi = {
"300" : 0.01,
"60": 0.02,
"30": 0.03,
"0": 0.05,
# "420" : 0.005,
# "300" : 0.007,
# "240" : 0.009,
#"0": 0.018
#"0": 0.007
}
# Optimal stoploss designed for the strategy.
# This attribute will be overridden if the config file contains "stoploss".
stoploss = -0.5
use_custom_stoploss = True
# Trailing stoploss
trailing_stop = True
trailing_stop_positive = 0.007
trailing_stop_positive_offset = 0.015 # Disabled / not configured
trailing_only_offset_is_reached = True
# Optimal timeframe for the strategy.
timeframe = '15m'
# Run "populate_indicators()" only for new candle.
process_only_new_candles = False
# These values can be overridden in the "ask_strategy" section in the config.
use_exit_signal = True
exit_profit_only = False
ignore_roi_if_entry_signal = False
# Number of candles the strategy requires before producing valid signals
startup_candle_count: int = 30
# Optional order type mapping.
order_types = {
'entry': 'market',
'exit': 'market',
'emergency_exit': 'market',
'force_entry': 'market',
'force_exit': "market",
'stoploss': 'market',
'stoploss_on_exchange': False,
}
# Optional order time in force.
order_time_in_force = {
'entry': 'gtc',
'exit': 'gtc'
}
plot_config = None
def get_ticker_indicator(self):
return int(self.timeframe[:-1])
def populate_indicators(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
"""
Adds several different TA indicators to the given DataFrame
Performance Note: For the best performance be frugal on the number of indicators
you are using. Let uncomment only the indicator you are using in your strategies
or your hyperopt configuration, otherwise you will waste your memory and CPU usage.
:param dataframe: Dataframe with data from the exchange
:param metadata: Additional information, like the currently traded pair
:return: a Dataframe with all mandatory indicators for the strategies
"""
# Get the informative pair
# informative = self.dp.get_pair_dataframe(pair=metadata['pair'], timeframe='15m')
# informative = resample_to_interval(dataframe, self.get_ticker_indicator() * 15)
informative = dataframe
# Momentum Indicators
# ------------------------------------
# RSI
informative['rsi'] = ta.RSI(informative)
# Stochastic Slow
informative['stoch'] = ta.STOCH(informative)['slowk']
# ROC
informative['roc'] = ta.ROC(informative)
# Ultimate Oscillator
informative['uo'] = ta.ULTOSC(informative)
# Awesome Oscillator
informative['ao'] = qtpylib.awesome_oscillator(informative)
# MACD
informative['macd'] = ta.MACD(informative)['macd']
# Commodity Channel Index
informative['cci'] = ta.CCI(informative)
# CMF
informative['cmf'] = chaikin_money_flow(informative, 20)
# OBV
informative['obv'] = ta.OBV(informative)
# MFI
informative['mfi'] = ta.MFI(informative)
# ADX
informative['adx'] = ta.ADX(informative)
# ATR
informative['atr'] = qtpylib.atr(informative, window=14, exp=False)
# Keltner Channel
# keltner = qtpylib.keltner_channel(dataframe, window=20, atrs=1)
keltner = emaKeltner(informative)
informative["kc_upperband"] = keltner["upper"]
informative["kc_middleband"] = keltner["mid"]
informative["kc_lowerband"] = keltner["lower"]
# Bollinger Bands
bollinger = qtpylib.bollinger_bands(qtpylib.typical_price(informative), window=20, stds=2)
informative['bollinger_upperband'] = bollinger['upper']
informative['bollinger_lowerband'] = bollinger['lower']
# EMA - Exponential Moving Average
informative['ema9'] = ta.EMA(informative, timeperiod=9)
informative['ema20'] = ta.EMA(informative, timeperiod=20)
informative['ema50'] = ta.EMA(informative, timeperiod=50)
informative['ema200'] = ta.EMA(informative, timeperiod=200)
pivots = pivot_points(informative)
informative['pivot_lows'] = pivots['pivot_lows']
informative['pivot_highs'] = pivots['pivot_highs']
# Use the helper function merge_informative_pair to safely merge the pair
# Automatically renames the columns and merges a shorter timeframe dataframe and a longer timeframe informative pair
# use ffill to have the 1d value available in every row throughout the day.
# Without this, comparisons between columns of the original and the informative pair would only work once per day.
# Full documentation of this method, see below
initialize_divergences_lists(informative)
add_divergences(informative, 'rsi')
add_divergences(informative, 'stoch')
add_divergences(informative, 'roc')
add_divergences(informative, 'uo')
add_divergences(informative, 'ao')
add_divergences(informative, 'macd')
add_divergences(informative, 'cci')
add_divergences(informative, 'cmf')
add_divergences(informative, 'obv')
add_divergences(informative, 'mfi')
add_divergences(informative, 'adx')
# print("-------------------informative-------------------")
# print(informative)
# print("-------------------dataframe-------------------")
# print(dataframe)
# dataframe = merge_informative_pair(dataframe, informative, self.timeframe, '15m', ffill=True)
# dataframe = resampled_merge(dataframe, informative)
# print(dataframe[resample("total_bullish_divergences_count")])
# for index, value in enumerate(dataframe[resample("total_bullish_divergences_count")]):
# if value < 0.5:
# dataframe[resample("total_bullish_divergences_count")][index] = None
# dataframe[resample("total_bullish_divergences")][index] = None
# dataframe[resample("total_bullish_divergences_names")][index] = None
# else:
# print(value)
# print(dataframe[resample("total_bullish_divergences")][index])
# print(dataframe[resample("total_bullish_divergences_names")][index])
HarmonicDivergence.plot_config = (
PlotConfig()
# .add_pivots_in_config()
# .add_divergence_in_config('rsi')
# .add_divergence_in_config('stoch')
# .add_divergence_in_config('roc')
# .add_divergence_in_config('uo')
# .add_divergence_in_config('ao')
# .add_divergence_in_config('macd')
# .add_divergence_in_config('cci')
# .add_divergence_in_config('cmf')
# .add_divergence_in_config('obv')
# .add_divergence_in_config('mfi')
# .add_divergence_in_config('adx')
.add_total_divergences_in_config(dataframe)
.config)
return dataframe
def populate_entry_trend(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
"""
Based on TA indicators, populates the buy signal for the given dataframe
:param dataframe: DataFrame populated with indicators
:param metadata: Additional information, like the currently traded pair
:return: DataFrame with buy column
"""
dataframe.loc[
(
(dataframe[resample('total_bullish_divergences')].shift() > 0)
# # & (dataframe['high'] > dataframe['high'].shift())
# & (
# (keltner_middleband_check(dataframe) & (ema_check(dataframe)) & (green_candle(dataframe)))
# # (keltner_middleband_check(dataframe) & (green_candle(dataframe)))
# | (keltner_lowerband_check(dataframe) & (ema_check(dataframe)))
# # | keltner_lowerband_check(dataframe)
# # | (keltner_lowerband_check(dataframe) & (green_candle(dataframe)))
# | (bollinger_lowerband_check(dataframe) & (ema_check(dataframe)))
# )
& two_bands_check(dataframe)
# # & bollinger_keltner_check(dataframe)
# & ema_cross_check(dataframe)
& (dataframe['volume'] > 0) # Make sure Volume is not 0
),
'enter_long'] = 1
return dataframe
def populate_exit_trend(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
"""
Based on TA indicators, populates the sell signal for the given dataframe
:param dataframe: DataFrame populated with indicators
:param metadata: Additional information, like the currently traded pair
:return: DataFrame with buy column
"""
dataframe.loc[
(
(dataframe['volume'] > 0) # Make sure Volume is not 0
),
'long_out'] = 0
return dataframe
def custom_exit(self, pair: str, trade: 'Trade', current_time: 'datetime', current_rate: float,
current_profit: float, **kwargs):
dataframe, _ = self.dp.get_analyzed_dataframe(pair, self.timeframe)
takeprofit = 999999
# self.trailing_stop = False
for i in range(1,len(dataframe['close'])):
if dataframe.iloc[-i]['date'].to_pydatetime().replace(tzinfo=datetime.timezone.utc) == trade.open_date_utc:
buy_candle = dataframe.iloc[-i-1].squeeze()
takeprofit = buy_candle[resample('high')] + buy_candle[resample('atr')]
break
# if takeprofit < current_rate:
# self.trailing_stop = True
# return True
def custom_stoploss(self, pair: str, trade: 'Trade', current_time: datetime,
current_rate: float, current_profit: float, **kwargs) -> float:
dataframe, _ = self.dp.get_analyzed_dataframe(pair, self.timeframe)
stoploss = 999999
for i in range(1,len(dataframe['close'])):
if dataframe.iloc[-i]['date'].to_pydatetime().replace(tzinfo=datetime.timezone.utc) == trade.open_date_utc:
buy_candle = dataframe.iloc[-i-1].squeeze()
stoploss = buy_candle[resample('low')] - buy_candle[resample('atr')]
# stoploss = buy_candle[resample('high')] - buy_candle[resample('atr')]
break
# Convert absolute price to percentage relative to current_rate
if stoploss < current_rate:
return (stoploss / current_rate) - 1
# return maximum stoploss value, keeping current stoploss price unchanged
return 1
def resample(indicator):
# return "resample_15_" + indicator
return indicator
def two_bands_check(dataframe):
check = (
# ((dataframe['low'] < dataframe['bollinger_lowerband']) & (dataframe['high'] > dataframe['kc_lowerband'])) |
((dataframe[resample('low')] < dataframe[resample('kc_lowerband')]) & (dataframe[resample('high')] > dataframe[resample('kc_upperband')])) # 1
# ((dataframe['low'] < dataframe['kc_lowerband']) & (dataframe['high'] > dataframe['kc_middleband'])) # 2
# | ((dataframe['low'] < dataframe['kc_middleband']) & (dataframe['high'] > dataframe['kc_upperband'])) # 2
)
return ~check
def ema_cross_check(dataframe):
dataframe['ema20_50_cross'] = qtpylib.crossed_below(dataframe[resample('ema20')],dataframe[resample('ema50')])
dataframe['ema20_200_cross'] = qtpylib.crossed_below(dataframe[resample('ema20')],dataframe[resample('ema200')])
dataframe['ema50_200_cross'] = qtpylib.crossed_below(dataframe[resample('ema50')],dataframe[resample('ema200')])
return ~(
dataframe['ema20_50_cross']
| dataframe['ema20_200_cross']
| dataframe['ema50_200_cross']
)
def green_candle(dataframe):
return dataframe[resample('open')] < dataframe[resample('close')]
def keltner_middleband_check(dataframe):
return (dataframe[resample('low')] < dataframe[resample('kc_middleband')]) & (dataframe[resample('high')] > dataframe[resample('kc_middleband')])
def keltner_lowerband_check(dataframe):
return (dataframe[resample('low')] < dataframe[resample('kc_lowerband')]) & (dataframe[resample('high')] > dataframe[resample('kc_lowerband')])
def bollinger_lowerband_check(dataframe):
return (dataframe[resample('low')] < dataframe[resample('bollinger_lowerband')]) & (dataframe[resample('high')] > dataframe[resample('bollinger_lowerband')])
def bollinger_keltner_check(dataframe):
return (dataframe[resample('bollinger_lowerband')] < dataframe[resample('kc_lowerband')]) & (dataframe[resample('bollinger_upperband')] > dataframe[resample('kc_upperband')])
def ema_check(dataframe):
check = (
(dataframe[resample('ema9')] < dataframe[resample('ema20')])
& (dataframe[resample('ema20')] < dataframe[resample('ema50')])
& (dataframe[resample('ema50')] < dataframe[resample('ema200')]))
return ~check
def initialize_divergences_lists(dataframe: DataFrame):
dataframe["total_bullish_divergences"] = np.empty(len(dataframe['close'])) * np.nan
dataframe["total_bullish_divergences_count"] = np.empty(len(dataframe['close'])) * np.nan
dataframe["total_bullish_divergences_count"] = [0 if x != x else x for x in dataframe["total_bullish_divergences_count"]]
dataframe["total_bullish_divergences_names"] = np.empty(len(dataframe['close'])) * np.nan
dataframe["total_bullish_divergences_names"] = ['' if x != x else x for x in dataframe["total_bullish_divergences_names"]]
dataframe["total_bearish_divergences"] = np.empty(len(dataframe['close'])) * np.nan
dataframe["total_bearish_divergences_count"] = np.empty(len(dataframe['close'])) * np.nan
dataframe["total_bearish_divergences_count"] = [0 if x != x else x for x in dataframe["total_bearish_divergences_count"]]
dataframe["total_bearish_divergences_names"] = np.empty(len(dataframe['close'])) * np.nan
dataframe["total_bearish_divergences_names"] = ['' if x != x else x for x in dataframe["total_bearish_divergences_names"]]
def add_divergences(dataframe: DataFrame, indicator: str):
(bearish_divergences, bearish_lines, bullish_divergences, bullish_lines) = divergence_finder_dataframe(dataframe, indicator)
dataframe['bearish_divergence_' + indicator + '_occurence'] = bearish_divergences
# for index, bearish_line in enumerate(bearish_lines):
# dataframe['bearish_divergence_' + indicator + '_line_'+ str(index)] = bearish_line
dataframe['bullish_divergence_' + indicator + '_occurence'] = bullish_divergences
# for index, bullish_line in enumerate(bullish_lines):
# dataframe['bullish_divergence_' + indicator + '_line_'+ str(index)] = bullish_line
def divergence_finder_dataframe(dataframe: DataFrame, indicator_source: str) -> Tuple[pd.Series, pd.Series]:
bearish_lines = [np.empty(len(dataframe['close'])) * np.nan]
bearish_divergences = np.empty(len(dataframe['close'])) * np.nan
bullish_lines = [np.empty(len(dataframe['close'])) * np.nan]
bullish_divergences = np.empty(len(dataframe['close'])) * np.nan
low_iterator = []
high_iterator = []
for index, row in enumerate(dataframe.itertuples(index=True, name='Pandas')):
if np.isnan(row.pivot_lows):
low_iterator.append(0 if len(low_iterator) == 0 else low_iterator[-1])
else:
low_iterator.append(index)
if np.isnan(row.pivot_highs):
high_iterator.append(0 if len(high_iterator) == 0 else high_iterator[-1])
else:
high_iterator.append(index)
for index, row in enumerate(dataframe.itertuples(index=True, name='Pandas')):
bearish_occurence = bearish_divergence_finder(dataframe,
dataframe[indicator_source],
high_iterator,
index)
if bearish_occurence != None:
(prev_pivot , current_pivot) = bearish_occurence
bearish_prev_pivot = dataframe['close'][prev_pivot]
bearish_current_pivot = dataframe['close'][current_pivot]
bearish_ind_prev_pivot = dataframe[indicator_source][prev_pivot]
bearish_ind_current_pivot = dataframe[indicator_source][current_pivot]
length = current_pivot - prev_pivot
bearish_lines_index = 0
can_exist = True
while(True):
can_draw = True
if bearish_lines_index <= len(bearish_lines):
bearish_lines.append(np.empty(len(dataframe['close'])) * np.nan)
actual_bearish_lines = bearish_lines[bearish_lines_index]
for i in range(length + 1):
point = bearish_prev_pivot + (bearish_current_pivot - bearish_prev_pivot) * i / length
indicator_point = bearish_ind_prev_pivot + (bearish_ind_current_pivot - bearish_ind_prev_pivot) * i / length
if i != 0 and i != length:
if (point <= dataframe['close'][prev_pivot + i]
or indicator_point <= dataframe[indicator_source][prev_pivot + i]):
can_exist = False
if not np.isnan(actual_bearish_lines[prev_pivot + i]):
can_draw = False
if not can_exist:
break
if can_draw:
for i in range(length + 1):
actual_bearish_lines[prev_pivot + i] = bearish_prev_pivot + (bearish_current_pivot - bearish_prev_pivot) * i / length
break
bearish_lines_index = bearish_lines_index + 1
if can_exist:
bearish_divergences[index] = row.close
dataframe["total_bearish_divergences"][index] = row.close
if index > 30:
dataframe["total_bearish_divergences_count"][index-30] = dataframe["total_bearish_divergences_count"][index-30] + 1
dataframe["total_bearish_divergences_names"][index-30] = dataframe["total_bearish_divergences_names"][index-30] + indicator_source.upper() + '
'
bullish_occurence = bullish_divergence_finder(dataframe,
dataframe[indicator_source],
low_iterator,
index)
if bullish_occurence != None:
(prev_pivot , current_pivot) = bullish_occurence
bullish_prev_pivot = dataframe['close'][prev_pivot]
bullish_current_pivot = dataframe['close'][current_pivot]
bullish_ind_prev_pivot = dataframe[indicator_source][prev_pivot]
bullish_ind_current_pivot = dataframe[indicator_source][current_pivot]
length = current_pivot - prev_pivot
bullish_lines_index = 0
can_exist = True
while(True):
can_draw = True
if bullish_lines_index <= len(bullish_lines):
bullish_lines.append(np.empty(len(dataframe['close'])) * np.nan)
actual_bullish_lines = bullish_lines[bullish_lines_index]
for i in range(length + 1):
point = bullish_prev_pivot + (bullish_current_pivot - bullish_prev_pivot) * i / length
indicator_point = bullish_ind_prev_pivot + (bullish_ind_current_pivot - bullish_ind_prev_pivot) * i / length
if i != 0 and i != length:
if (point >= dataframe['close'][prev_pivot + i]
or indicator_point >= dataframe[indicator_source][prev_pivot + i]):
can_exist = False
if not np.isnan(actual_bullish_lines[prev_pivot + i]):
can_draw = False
if not can_exist:
break
if can_draw:
for i in range(length + 1):
actual_bullish_lines[prev_pivot + i] = bullish_prev_pivot + (bullish_current_pivot - bullish_prev_pivot) * i / length
break
bullish_lines_index = bullish_lines_index + 1
if can_exist:
bullish_divergences[index] = row.close
dataframe["total_bullish_divergences"][index] = row.close
if index > 30:
dataframe["total_bullish_divergences_count"][index-30] = dataframe["total_bullish_divergences_count"][index-30] + 1
dataframe["total_bullish_divergences_names"][index-30] = dataframe["total_bullish_divergences_names"][index-30] + indicator_source.upper() + '
'
return (bearish_divergences, bearish_lines, bullish_divergences, bullish_lines)
def bearish_divergence_finder(dataframe, indicator, high_iterator, index):
if high_iterator[index] == index:
current_pivot = high_iterator[index]
occurences = list(dict.fromkeys(high_iterator))
current_index = occurences.index(high_iterator[index])
for i in range(current_index-1,current_index-6,-1):
prev_pivot = occurences[i]
if np.isnan(prev_pivot):
return
if ((dataframe['pivot_highs'][current_pivot] < dataframe['pivot_highs'][prev_pivot] and indicator[current_pivot] > indicator[prev_pivot])
or (dataframe['pivot_highs'][current_pivot] > dataframe['pivot_highs'][prev_pivot] and indicator[current_pivot] < indicator[prev_pivot])):
return (prev_pivot , current_pivot)
return None
def bullish_divergence_finder(dataframe, indicator, low_iterator, index):
if low_iterator[index] == index:
current_pivot = low_iterator[index]
occurences = list(dict.fromkeys(low_iterator))
current_index = occurences.index(low_iterator[index])
for i in range(current_index-1,current_index-6,-1):
prev_pivot = occurences[i]
if np.isnan(prev_pivot):
return
if ((dataframe['pivot_lows'][current_pivot] < dataframe['pivot_lows'][prev_pivot] and indicator[current_pivot] > indicator[prev_pivot])
or (dataframe['pivot_lows'][current_pivot] > dataframe['pivot_lows'][prev_pivot] and indicator[current_pivot] < indicator[prev_pivot])):
return (prev_pivot, current_pivot)
return None
from enum import Enum
class PivotSource(Enum):
HighLow = 0
Close = 1
def pivot_points(dataframe: DataFrame, window: int = 5, pivot_source: PivotSource = PivotSource.Close) -> DataFrame:
high_source = None
low_source = None
if pivot_source == PivotSource.Close:
high_source = 'close'
low_source = 'close'
elif pivot_source == PivotSource.HighLow:
high_source = 'high'
low_source = 'low'
pivot_points_lows = np.empty(len(dataframe['close'])) * np.nan
pivot_points_highs = np.empty(len(dataframe['close'])) * np.nan
last_values = deque()
# find pivot points
for index, row in enumerate(dataframe.itertuples(index=True, name='Pandas')):
last_values.append(row)
if len(last_values) >= window * 2 + 1:
current_value = last_values[window]
is_greater = True
is_less = True
for window_index in range(0, window):
left = last_values[window_index]
right = last_values[2 * window - window_index]
local_is_greater, local_is_less = check_if_pivot_is_greater_or_less(current_value, high_source, low_source, left, right)
is_greater &= local_is_greater
is_less &= local_is_less
if is_greater:
pivot_points_highs[index - window] = getattr(current_value, high_source)
if is_less:
pivot_points_lows[index - window] = getattr(current_value, low_source)
last_values.popleft()
# find last one
if len(last_values) >= window + 2:
current_value = last_values[-2]
is_greater = True
is_less = True
for window_index in range(0, window):
left = last_values[-2 - window_index - 1]
right = last_values[-1]
local_is_greater, local_is_less = check_if_pivot_is_greater_or_less(current_value, high_source, low_source, left, right)
is_greater &= local_is_greater
is_less &= local_is_less
if is_greater:
pivot_points_highs[index - 1] = getattr(current_value, high_source)
if is_less:
pivot_points_lows[index - 1] = getattr(current_value, low_source)
return pd.DataFrame(index=dataframe.index, data={
'pivot_lows': pivot_points_lows,
'pivot_highs': pivot_points_highs
})
def check_if_pivot_is_greater_or_less(current_value, high_source: str, low_source: str, left, right) -> Tuple[bool, bool]:
is_greater = True
is_less = True
if (getattr(current_value, high_source) < getattr(left, high_source) or
getattr(current_value, high_source) < getattr(right, high_source)):
is_greater = False
if (getattr(current_value, low_source) > getattr(left, low_source) or
getattr(current_value, low_source) > getattr(right, low_source)):
is_less = False
return (is_greater, is_less)
def emaKeltner(dataframe):
keltner = {}
atr = qtpylib.atr(dataframe, window=10)
ema20 = ta.EMA(dataframe, timeperiod=20)
keltner['upper'] = ema20 + atr
keltner['mid'] = ema20
keltner['lower'] = ema20 - atr
return keltner
def chaikin_money_flow(dataframe, n=20, fillna=False) -> Series:
"""Chaikin Money Flow (CMF)
It measures the amount of Money Flow Volume over a specific period.
http://stockcharts.com/school/doku.php?id=chart_school:technical_indicators:chaikin_money_flow_cmf
Args:
dataframe(pandas.Dataframe): dataframe containing ohlcv
n(int): n period.
fillna(bool): if True, fill nan values.
Returns:
pandas.Series: New feature generated.
"""
df = dataframe.copy()
mfv = ((df['close'] - df['low']) - (df['high'] - df['close'])) / (df['high'] - df['low'])
mfv = mfv.fillna(0.0) # float division by zero
mfv *= df['volume']
cmf = (mfv.rolling(n, min_periods=0).sum()
/ df['volume'].rolling(n, min_periods=0).sum())
if fillna:
cmf = cmf.replace([np.inf, -np.inf], np.nan).fillna(0)
return Series(cmf, name='cmf')