Matlab Quick Reference (Page 5 of 12) in pdf

Query MATLAB about errors in file input or output

Rational fraction approximation

Hessenberg form of a matrix

ferror

rat, rats

hess

Rewind an open file

Polynomial with specified roots

frewind

poly

Coordinate System Conversion

Set file position indicator

QZ factorization for generalized eigenvalues

fseek

Get file position indicator

Transform Cartesian coordinates to polar or cylindrical

Convert real Schur form to complex Schur form

ftell

cart2pol

rsf2csf

Schur decomposition

Transform Cartesian coordinates to spherical

schur

cart2sph

pol2cart

Transform polar or cylindrical coordinates to Cartesian

svd

Singular value decomposition

String Conversion

Transform spherical coordinates to Cartesian

sph2cart

Write formatted data to a string

sprintf

Matrix Functions

Read string under format control

sscanf

Matrix Functions

Matrix exponential

expm

Matrix Analysis

Evaluate general matrix function

funm

Specialized File I/O

Condition number with respect to inversion

cond

Matrix logarithm

logm

Read an ASCII delimited file into a matrix

Condition number with respect to eigenvalues

dlmread

condeig

Matrix square root

sqrtm

Write a matrix to an ASCII delimited file

Matrix determinant

dlmwrite

det

HDF interface

hdf

Vector and matrix norms

norm

Low Level Functions

Return information about a graphics file

imfinfo

Null space of a matrix

null

Read image from graphics file

Range space of a matrix

Delete column from QR factorization

imread

orth

qrdelete

imwrite

Write an image to a graphics file

rank

Rank of a matrix

qrinsert

Insert column in QR factorization

Read formatted data from a string

strread

Matrix reciprocal condition number estimate

rcond

Data Analysis and Fourier Transform

Read formatted data from text file

textread

Reduced row echelon form

rref, rrefmovie

Read a Lotus123 WK1 spreadsheet file into a matrix

Angle between two subspaces

wk1read

subspace

Basic Operations

Sum of diagonal elements

wk1writ

trace

Write a matrix to a Lotus123 WK1 spreadsheet file

cumprod

Cumulative product

Cumulative sum

cumsum

Cumulative trapezoidal numerical integration

cumtrapz

Linear Equations

Specialized Math Functions

Prime factors

factor

Airy functions

Cholesky factorization

airy

chol

Detect points inside a polygonal region

inpolygon

Bessel functions of the third kind (Hankel

inv

Matrix inverse

besselh

functions)

Maximum elements of an array

max

Least squares solution in the presence of known

lscov

Modified Bessel functions

covariance

Average or mean value of arrays

besseli, besselk

mean

Bessel functions

Median value of arrays

besselj, bessely

LU matrix factorization

median

Beta functions

Nonnegative least squares

Minimum elements of an array

beta, betainc, betaln

lsqnonneg

min

Jacobi elliptic functions

Minimum Residual Method

All possible permutations

ellipj

minres

perms

Complete elliptic integrals of the first and second

Moore-Penrose pseudoinverse of a matrix

Area of polygon

pinv

polyarea

ellipke

kind

Generate list of prime numbers

Orthogonal-triangular decomposition

primes

erf, erfc, erfcx,

Error functions

Symmetric LQ method

Product of array elements

symmlq

prod

erfinv

Rectangle intersection Area

rectint

Exponential integral

expint

Sort elements in ascending order

sort

Factorial function

factorial

Eigenvalues and Singular Values

Sort rows in ascending order

sortrows

gamma, gammainc,

Gamma functions

Improve accuracy of computed eigenvalues

balance

Standard deviation

gammaln

std

Convert complex diagonal form to real block diagonal form

cdf2rdf

Associated Legendre functions

Sum of array elements

legendre

sum

Eigenvalues and eigenvectors

eig

Trapezoidal numerical integration

Base 2 power and scale floating-point numbers

trapz

pow2

Generalized singular value decomposition

gsvd

Matlab Quick Reference Page 5

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