/// <summary>Creates a new ExponentialMovingAverage indicator with the specified period and smoothingFactor from the left indicator
/// </summary>
/// <param name="left">The ExponentialMovingAverage indicator will be created using the data from left</param>
/// <param name="period">The period of the ExponentialMovingAverage indicators</param>
/// <param name="smoothingFactor">The percentage of data from the previous value to be carried into the next value</param>
/// <param name="waitForFirstToReady">True to only send updates to the second if left.IsReady returns true, false to alway send updates</param>
/// <returns>A reference to the ExponentialMovingAverage indicator to allow for method chaining</returns>
public static ExponentialMovingAverage EMA(this IUpdatable left, int period, double?smoothingFactor = null, bool waitForFirstToReady = true)
{
double k = smoothingFactor.HasValue ? k = smoothingFactor.Value : ExponentialMovingAverage.SmoothingFactorDefault(period);
return(new ExponentialMovingAverage($"EMA{period}_Of_{left.ExtractName()}", period, k).Of(left, waitForFirstToReady));
}
