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@erin_nader

To compute the Commodity Channel Index (CCI) using Swift, you can follow these steps:

**Define a function that calculates the CCI value based on the formula**: CCI = (Typical Price - SMA) / (0.015 * Mean Deviation) where Typical Price = (High + Low + Close) / 3 SMA = Simple Moving Average of Typical Price over a specified period Mean Deviation = Average of the absolute values of the differences between the Typical Price and the SMA over the specified period- Create an array of High, Low, and Close prices for the specified period.
- Calculate the Typical Price for each period in the array.
- Calculate the Simple Moving Average (SMA) of the Typical Price over the specified period.
- Calculate the Mean Deviation by finding the absolute differences between the Typical Price and SMA for each period, then calculating the average of these differences.
- Finally, compute the CCI value for each period using the CCI formula.

Here is an example Swift code snippet to calculate the CCI value for a given period:

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func calculateCCI(high: [Double], low: [Double], close: [Double], period: Int) -> [Double] { var cciValues: [Double] = [] for i in 0..<close.count { var typicalPrice = (high[i] + low[i] + close[i]) / 3 let sma = calculateSMA(typicalPrice: typicalPrice, period: period) var sumDiff = 0.0 for j in max(0, i-period+1)...i { sumDiff += abs(typicalPrice - sma) } let meanDeviation = sumDiff / Double(min(period, i + 1)) let cci = (typicalPrice - sma) / (0.015 * meanDeviation) cciValues.append(cci) } return cciValues } func calculateSMA(typicalPrice: Double, period: Int) -> Double { // Calculate the Simple Moving Average of the Typical Price over the specified period return 0.0 // Implement SMA calculation logic here } // Example usage let highPrices = [100.0, 110.0, 105.0, 120.0, 125.0] let lowPrices = [90.0, 100.0, 95.0, 110.0, 115.0] let closePrices = [95.0, 105.0, 100.0, 115.0, 120.0] let period = 14 let cciValues = calculateCCI(high: highPrices, low: lowPrices, close: closePrices, period: period) print(cciValues) |

This code snippet provides a basic implementation of the CCI calculation in Swift. You may need to implement the calculateSMA function and adjust the code based on your specific requirements and data source.

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