jEllipse: Analysis of modulated elliptical, or bivariate, signals Elliptical signal properties ellband - Bandwidth of modulated elliptical signals in two or three dimensions. ellparams - Ellipse parameters of a modulated bivariate or trivariate oscillation. ellvel - Average and instantaneous ellipse velocities. ellrad - Average and instantaneous ellipse radius. ellpol - Polarization parameters of an elliptical signal. Elliptical signal generation and conversions ellsig - Creates a modulated elliptical signal in two or three dimensions. sig2latlon - Converts an oscillatory signal to lat/lon displacements. elldiff - Differentiation of modulated elliptical signals. Plotting tools ellcurves - Returns curves corresponding to specified ellipse properties. ellipseplot - Plot ellipses. Basic ellipse properties ab2kl - Converts A and B to ellipse parameters Kappa and Lambda. kl2ab - Converts ellipse parameters Kappa and Lambda to A and B. ecconv - Converts between eccentricity measures. ellrossby - Ellipse Rossby number, for oceanographic applications. See also jRidges, jSpectral, jWavelet.