jRidges: Wavelet ridge analysis of modulated oscillatory signals Top-level functions ridgewalk - Extract wavelet transform ridges, including bias estimates. ridgemap - Maps ridge quantities back onto the time series. instmom - Univariate and multivariate instantaneous moments. Ridge utilities ridgelen - Wavelet ridge length expressed as number of full cycles. periodindex - Returns time index in increments of instantaneous period. See also jEllipse, jWavelet.