def construct_signal(self, spot_df, spot_df2, tech_params, br):
##### FILL IN WITH YOUR OWN SIGNALS
# use technical indicator to create signals
# (we could obviously create whatever function we wanted for generating the signal dataframe)
tech_ind = TechIndicator()
tech_ind.create_tech_ind(spot_df, 'SMA', tech_params); signal_df = tech_ind.get_signal()
return signal_df
tickers = tickers, # ticker (Thalesians)
fields = ['close'], # which fields to download
vendor_tickers = vendor_tickers, # ticker (Quandl)
vendor_fields = ['close'], # which Bloomberg fields to download
cache_algo = 'internet_load_return') # how to return data
ltsf = LightTimeSeriesFactory()
asset_df = ltsf.harvest_time_series(time_series_request)
spot_df = asset_df
logger.info("Running backtest...")
# use technical indicator to create signals
# (we could obviously create whatever function we wanted for generating the signal dataframe)
tech_ind = TechIndicator()
tech_ind.create_tech_ind(spot_df, indicator, tech_params); signal_df = tech_ind.get_signal()
# use the same data for generating signals
cash_backtest.calculate_trading_PnL(br, asset_df, signal_df)
port = cash_backtest.get_cumportfolio()
port.columns = [indicator + ' = ' + str(tech_params.sma_period) + ' ' + str(cash_backtest.get_portfolio_pnl_desc()[0])]
signals = cash_backtest.get_porfolio_signal()
# print the last positions (we could also save as CSV etc.)
print(signals.tail(1))
pf = PlotFactory()
gp = GraphProperties()
gp.title = "Thalesians FX trend strategy"
gp.source = 'Thalesians/BBG (calc with PyThalesians Python library)'
time_series_request = TimeSeriesRequest(
start_date="01 Jan 1970", # start date
finish_date=datetime.date.today(), # finish date
freq='daily', # daily data
data_source='quandl', # use Quandl as data source
tickers=['EURUSD', # ticker (Thalesians)
'GBPUSD'],
fields=['close'], # which fields to download
vendor_tickers=['FRED/DEXUSEU', 'FRED/DEXUSUK'], # ticker (Quandl)
vendor_fields=['close'], # which Bloomberg fields to download
cache_algo='internet_load_return') # how to return data
ltsf = LightTimeSeriesFactory()
daily_vals = ltsf.harvest_time_series(time_series_request)
techind = TechIndicator()
tech_params = TechParams()
tech_params.sma_period = 20
techind.create_tech_ind(daily_vals, 'SMA', tech_params=tech_params)
sma = techind.get_techind()
signal = techind.get_signal()
combine = daily_vals.join(sma, how='outer')
pf = PlotFactory()
pf.plot_line_graph(combine, adapter='pythalesians')
start_date="01 Jan 1970", # start date
finish_date=datetime.date.today(), # finish date
freq='daily', # daily data
data_source='quandl', # use Quandl as data source
tickers=[
'EURUSD', # ticker (Thalesians)
'GBPUSD'
],
fields=['close'], # which fields to download
vendor_tickers=['FRED/DEXUSEU', 'FRED/DEXUSUK'], # ticker (Quandl)
vendor_fields=['close'], # which Bloomberg fields to download
cache_algo='internet_load_return') # how to return data
ltsf = LightTimeSeriesFactory()
daily_vals = ltsf.harvest_time_series(time_series_request)
techind = TechIndicator()
tech_params = TechParams()
tech_params.sma_period = 20
techind.create_tech_ind(daily_vals, 'SMA', tech_params=tech_params)
sma = techind.get_techind()
signal = techind.get_signal()
combine = daily_vals.join(sma, how='outer')
pf = PlotFactory()
pf.plot_line_graph(combine, adapter='pythalesians')
tickers = tickers, # ticker (Thalesians)
fields = ['close'], # which fields to download
vendor_tickers = vendor_tickers, # ticker (Quandl)
vendor_fields = ['close'], # which Bloomberg fields to download
cache_algo = 'internet_load_return') # how to return data
ltsf = LightTimeSeriesFactory()
asset_df = ltsf.harvest_time_series(time_series_request)
spot_df = asset_df
logger.info("Running backtest...")
# use technical indicator to create signals
# (we could obviously create whatever function we wanted for generating the signal dataframe)
tech_ind = TechIndicator()
tech_ind.create_tech_ind(spot_df, indicator, tech_params); signal_df = tech_ind.get_signal()
# use the same data for generating signals
cash_backtest.calculate_trading_PnL(br, asset_df, signal_df)
port = cash_backtest.get_cumportfolio()
port.columns = [indicator + ' = ' + str(tech_params.sma_period) + ' ' + str(cash_backtest.get_portfolio_pnl_desc()[0])]
signals = cash_backtest.get_porfolio_signal()
# print the last positions (we could also save as CSV etc.)
print(signals.tail(1))
pf = PlotFactory()
gp = GraphProperties()
gp.title = "Thalesians FX trend strategy"
gp.source = 'Thalesians/BBG (calc with PyThalesians Python library)'
