Explanation: RSI: Calculated with a period of 14 by default. EMA 50 and EMA 200: The short-term and long-term EMAs are calculated. Signal logic: Buy (1) when RSI is between 30-70 and EMA50 is above EMA200. Sell (-1) when RSI is below 30 and EMA50 is below EMA200. You can backtest this strategy using this data and observe the signals plotted on the chart.