jSpectral: Multitaper spectral analysis, and other time series tools Multitaper spectral analysis sleptap - Calculate Slepian tapers. mspec - Multitaper power and cross spectra. Multitaper polarization analysis msvd - Singular value decomposition for polarization analysis. polparams - Spectral matrix polarization parameters. specdiag - Diagonalize a 2 x 2 spectral matrix. Assorted other transforms slidetrans - Sliding-window ('moving-window') Fourier transform. anatrans - Analytic part of signal. wigdist - Wigner distribution (alias-free algorithm). Time series analysis utilities doublen - Interpolates a time series to double its length. fourier - The one-sided Fourier frequencies for a given length time series. sampletimes - Computes mean sampling intervals and their statistics. Plotting tools twospecplot - Plots a pair of rotary or Cartesian spectra. See also jWavelet, jEllipse, jMatern.