Using the C Math Library

Data Analysis and Fourier Transform Functions

Basic Operations 

Function	Purpose
mlfCumtrapz	Cumulative trapezoidal numerical integration.
mlfMean	Average or mean value.
mlfMedian	Median value.
mlfSortrows	Sort rows in ascending order.
mlfStd	Standard deviation.
mlfTrapz	Numerical integration using trapezoidal method.

Finite Differences 

Function	Purpose
mlfDel2	Five-point discrete Laplacian.
mlfDiff	Difference function and approximate derivative.
mlfGradient	Approximate gradient (see online help).

Correlation 

Function	Purpose
mlfCorrcoef	Correlation coefficients.
mlfCov	Covariance matrix.
mlfSubspace	Angle between two subspaces.

Filtering and Convolution 

Function	Purpose
mlfConv	Convolution and polynomial multiplication.
mlfConv2	Two-dimensional convolution (see online help).
mlfDeconv	Deconvolution and polynomial division.
mlfFilter2	Two-dimensional digital filter (see online help).

Fourier Transforms 

Function	Purpose
mlfFft2	Two-dimensional discrete Fourier transform.
mlfFftshift	Shift DC component to center of spectrum.
mlfIfft	Inverse discrete Fourier transform.
mlfIfft2	Two-dimensional inverse discrete Fourier transform.
mlfIfftn	Inverse multidimensional fast Fourier transform.

Sound and Audio 

Function	Purpose
mlfFreqspace	Frequency spacing for frequency response.
mlfLin2mu	Convert linear signal to mu-law encoding.
mlfMu2lin	Convert mu-law encoding to linear signal.

Numerical Linear Algebra

Polynomial and Interpolation Functions