Donchian expert

The basic strategy with the Donchian Channel is often to:

• Buy when the price breaks above the upper band (indicating a potential uptrend).
• Sell when the price breaks below the lower band (indicating a potential downtrend).

Key Parameters

1. Period: The number of periods used to calculate the high and low for the bands.
2. Upper Band: Highest high over the last N periods.
3. Lower Band: Lowest low over the last N periods.
4. Middle Band (optional): Average of the upper and lower bands.

This code will:

• Open a buy trade when the price closes above the upper band.
• Open a sell trade when the price closes below the lower band.
• Close any open trade if the price crosses to the opposite band.