www.gusucode.com > datafun 工具箱matlab源码程序 > datafun/Contents.m
% Data analysis and Fourier transforms. % % Basic operations. % max - Largest component. % min - Smallest component. % mean - Average or mean value. % median - Median value. % mode - Mode, or most frequent value in a sample. % std - Standard deviation. % var - Variance. % sort - Sort in ascending order. % sortrows - Sort rows in ascending order. % issorted - TRUE for sorted vector and matrices. % sum - Sum of elements. % prod - Product of elements. % histogram - Histogram. % histcounts - Histogram bin counts. % trapz - Trapezoidal numerical integration. % movsum - Moving sum of elements. % movvar - Moving variance. % movstd - Moving standard deviation. % movmedian - Moving median. % movmean - Moving mean. % movmin - Moving minimum. % movmax - Moving maximum. % cumsum - Cumulative sum of elements. % cumprod - Cumulative product of elements. % cummin - Cumulative smallest component. % cummax - Cumulative largest component. % cumtrapz - Cumulative trapezoidal numerical integration. % % Finite differences. % diff - Difference and approximate derivative. % gradient - Approximate gradient. % del2 - 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. % convn - N-dimensional convolution. % deconv - Deconvolution and polynomial division. % detrend - Linear trend removal. % % Fourier transforms. % fft - Discrete Fourier transform. % fft2 - Two-dimensional discrete Fourier transform. % fftn - N-dimensional discrete Fourier Transform. % ifft - Inverse discrete Fourier transform. % ifft2 - Two-dimensional inverse discrete Fourier transform. % ifftn - N-dimensional inverse discrete Fourier Transform. % fftshift - Shift zero-frequency component to center of spectrum. % ifftshift - Inverse FFTSHIFT. % fftw - Interface to FFTW library run-time algorithm tuning control. % % Missing data. % ismissing - Find missing data. % standardizeMissing - Convert to standard missing data. % rmmissing - Remove standard missing data. % fillmissing - Fill standard missing data. % hist - Histogram. % histc - Histogram count. % Copyright 1984-2016 The MathWorks, Inc.