The BBRSI_BCD strategy is a trading strategy that uses a combination of Bollinger Bands and the Relative Strength Index (RSI) to generate buy and sell signals. In the populate_indicators method, several indicators are added to the given DataFrame. The RSI indicator is calculated and added as a column called 'rsi'.
Bollinger Bands are also calculated using the typical price of the DataFrame with a window of 20 and a standard deviation of 1.
The lower, middle, and upper bands of the Bollinger Bands are added as columns called 'bb_lowerband1', 'bb_middleband1', and 'bb_upperband1', respectively.
The populate_buy_trend method populates the buy signal for the DataFrame based on the TA indicators. The buy signal is triggered when the RSI is greater than 40 and the closing price is below the lower Bollinger Band. The populate_sell_trend method populates the sell signal for the DataFrame based on the TA indicators. The sell signal is triggered when the closing price is above the middle Bollinger Band. Overall, this strategy aims to identify potential buying opportunities when the RSI is relatively high and the price is below the lower Bollinger Band, and selling opportunities when the price rises above the middle Bollinger Band.