Measure seasonal strength using wavelet (Morlet) method

Uses Continuous Wavelet Transform with Morlet wavelet to measure power at the specified seasonal period.

Usage

seasonal_strength_wavelet(data, argvals, period)

Arguments

data

Matrix of functional data (n x m)

argvals

Vector of evaluation points (length m)

period

Seasonal period in argvals units

Value

Seasonal strength as ratio of wavelet power to total variance (0 to 1)