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- % Data analysis and Fourier transform functions.
- %
- % Basic operations.
- % max - Largest component.
- % min - Smallest component.
- % mean - Average or mean value.
- % median - Median value.
- % std - Standard deviation.
- % sort - Sort in ascending order.
- % sum - Sum of elements.
- % prod - Product of elements.
- % cumsum - Cumulative sum of elements.
- % cumprod - Cumulative product of elements.
- % trapz - Numerical integration using trapezoidal method.
- %
- % Finite differences.
- % diff - Difference function and approximate derivative.
- % gradient - Approximate gradient.
- % del2 - Five-point discrete Laplacian.
- %
- % Correlation.
- % corrcoef - Correlation coefficients.
- % cov - Covariance matrix.
- % subspace - Angle between subspaces.
- %
- % Filtering and convolution.
- % filter - One-dimensional digital filter.
- % filter2 - Two-dimensional digital filter.
- % conv - Convolution and polynomial multiplication.
- % conv2 - Two-dimensional convolution.
- % deconv - Deconvolution and polynomial division.
- %
- % Fourier transforms.
- % fft - Discrete Fourier transform.
- % fft2 - Two-dimensional discrete Fourier transform.
- % ifft - Inverse discrete Fourier transform.
- % ifft2 - Two-dimensional inverse discrete Fourier transform.
- % abs - Magnitude.
- % angle - Phase angle.
- % unwrap - Remove phase angle jumps across 360 degree boundaries.
- % fftshift - Move zeroth lag to center of spectrum.
- % cplxpair - Sort numbers into complex conjugate pairs.
- % nextpow2 - Next higher power of 2.
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- % Copyright (c) 1984-93 by The MathWorks, Inc.
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