Calculate the expected value of each feature.

## Arguments

- fitCoef
Matrix of coefficients from the spline fits, where rows correspond to features and columns correspond to variables in the model.

- time
Vector of values of the periodic variable for the observations, where 0 corresponds to the lowest possible value and 1 corresponds to the highest possible value.

- period
Period for the periodic variable.

- knots
Optional vector of knots. This argument is designed for internal use.

## Value

Matrix of predicted measurements, where rows correspond to time-points and columns correspond to features.