MATLAB Function Reference

Data Analysis and Fourier Transform Functions

Basic Operations
cumprod	Cumulative product
cumsum	Cumulative sum
cumtrapz	Cumulative trapezoidal numerical integration
factor	Prime factors
inpolygon	Detect points inside a polygonal region
max	Maximum elements of an array
mean	Average or mean value of arrays
median	Median value of arrays
min	Minimum elements of an array
perms	All possible permutations
polyarea	Area of polygon
primes	Generate list of prime numbers
prod	Product of array elements
rectint	Rectangle intersection Area
sort	Sort elements in ascending order
sortrows	Sort rows in ascending order
std	Standard deviation
sum	Sum of array elements
trapz	Trapezoidal numerical integration
var	Variance
Finite Differences
del2	Discrete Laplacian
diff	Differences and approximate derivatives
gradient	Numerical gradient
Correlation
corrcoef	Correlation coefficients
cov	Covariance matrix
Filtering and Convolution
conv	Convolution and polynomial multiplication
conv2	Two-dimensional convolution
deconv	Deconvolution and polynomial division
filter	Filter data with an infinite impulse response (IIR) or finite impulse response (FIR) filter
filter2	Two-dimensional digital filtering
Fourier Transforms
abs	Absolute value and complex magnitude
angle	Phase angle
cplxpair	Sort complex numbers into complex conjugate pairs
fft	One-dimensional fast Fourier transform
fft2	Two-dimensional fast Fourier transform
fftshift	Shift DC component of fast Fourier transform to center of spectrum
ifft	Inverse one-dimensional fast Fourier transform
ifft2	Inverse two-dimensional fast Fourier transform
ifftn	Inverse multidimensional fast Fourier transform
ifftshift	Inverse FFT shift
nextpow2	Next power of two
unwrap	Correct phase angles

Matrix Functions - Numerical Linear Algebra

Polynomial and Interpolation Functions