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Matlab Function Reference

Arithmetic Operators + - * / \ ^ '

Relational Operators < > <= >= == ~=

Logical Operators: Elementwise & | ~

Logical Operators: Short-circuit && ||

Special Characters [ ] ( ) {} = ' . ... , ; : % ! @

colon (:)

a

accumarray Construct an array with accumulation
abs Absolute value and complex magnitude
acos Inverse cosine, result in radians
actxcontrol Create ActiveX control in figure window
acosd Inverse cosine, result in degrees
acosh Inverse hyperbolic cosine
acot Inverse cotangent, result in radians
acotd Inverse cotangent, result in degrees
acoth Inverse hyperbolic cotangent
acsc Inverse cosecant, result in radians
acscd Inverse cosecant, result in degrees
acsch Inverse cosecant and inverse hyperbolic cosecant
actxcontrolselect Display graphical interface for creating an ActiveX control
actxcontrollist List all currently installed ActiveX controls
arithmeticoperators Matrix and array arithmetic
actxserver Create COM Automation server
addframe Add frame to Audio/Video Interleaved (AVI) file
addpath Add directories to MATLAB search path
addpref Add preference
addproperty Add custom property to object
addtodate Modify date number by field
airy Airy functions
alim Set or query the axes alpha limits
all Determine if all array elements are nonzero
allchild Find all children of specified objects
alpha Set transparency properties for objects in current axes
alphamap Specify the figure alphamap (transparency)
ancestor Get ancestor of graphics object
and Find logical AND of array or scalar inputs
angle Phase angle
annotation Create annotation objects
annotationdoublearrowproperties Modifying Properties
annotationarrowproperties Modifying Properties
annotationrectangleproperties Modifying Properties
annotationellipseproperties Modifying Properties
annotationlineproperties Modifying Properties
ans The most recent answer
any Determine if any array elements are nonzero
annotationtextarrowproperties Modifying Properties
annotationtextboxproperties Modifying Properties
area Filled area 2-D plot
asec Inverse secant, result in radians
areaseriesproperties Modifying Properties
arrayfun Apply function to each element of array
ascii Set FTP transfer type to ASCII
assignin Assign value to variable in specified workspace
asecd Inverse secant, result in degrees
asech Inverse hyperbolic secant
asin Inverse sine, result in radians
asind Inverse sine, result in degrees
asinh Inverse hyperbolic sine
atan Inverse tangent, result in radians
audioplayer Create audio player object
atan2 Four-quadrant inverse tangent
atand Inverse tangent, result in degrees
atanh Inverse hyperbolic tangent
audiorecorder Create audio recorder object
aufinfo Return information about NeXT/SUN (.au) sound file
auread Read NeXT/SUN (.au) sound file
auwrite Write NeXT/SUN (.au) sound file
avifile Create new Audio/Video Interleaved (AVI) file
aviinfo Return information about Audio/Video Interleaved (AVI) file
aviread Read Audio/Video Interleaved (AVI) file
axes Create axes graphics object
axes_props Modifying Properties
axis Axis scaling and appearance

b

barseriesproperties Modifying Properties
balance Diagonal scaling to improve eigenvalue accuracy
bar Plot bar graph (vertical and horizontal)
bar3 Plot three-dimensional bar chart
bar3h Plot three-dimensional bar chart
barh Plot bar graph (vertical and horizontal)
base2dec Convert base N number string to decimal number
beep Produce beep sound
besselh Bessel function of the third kind (Hankel function)
besseli Modified Bessel function of the first kind
besselj Bessel function of the first kind
besselk Modified Bessel function of the second kind
bessely Bessel functions of the second kind
beta Beta function
betainc Incomplete beta function
betaln Logarithm of beta function
bicg Biconjugate gradients method
bicgstab Biconjugate gradients stabilized method
bin2dec Convert binary number string to decimal number
binary Set FTP transfer type to binary
bitand Return bitwise AND
bitcmp Return bitwise complement
bitget Get bit at specified position
bitmax Return maximum double-precision floating-point integer
bitor Return bitwise OR
bitset Set bit at specified position
bitshift Shift bits specified number of places
bitxor Return bitwise XOR
blanks Create string of blank characters
blkdiag Construct a block diagonal matrix from input arguments
box Display axes border
break Terminate execution of for or while loop
brighten Brighten or darken colormap
builtin Execute built-in function from overloaded method
bvp4c Solve boundary value problems (BVPs) for ordinary differential equations
bvpget Extract properties from the options structure created with bvpset
bvpinit Form the initial guess for bvp4c
bvpset Create or alter boundary value problem (BVP) options structure
bvpval Evaluate the numerical solution of a boundary value problem (BVP) using the output of bvp4c

c

callsoapservice Send SOAP message off to endpoint
calendar Display calendar for specified month
calllib Call function in external library
cameratoolbar Control camera toolbar programmatically
camdolly Move the camera position and target
closeavifile Close Audio/Video Interleaved (AVI) file
camlight Create or move a light object in camera coordinates
camlookat Position the camera to view an object or group of objects
camorbit Rotate the camera position around the camera target
campan Rotate the camera target around the camera position
campos Set or query the camera position
camproj Set or query the projection type
camroll Rotate the camera about the view axis
camtarget Set or query the location of the camera target
camup Set or query the camera up vector
camva Set or query the camera view angle
camzoom Zoom in and out on a scene
cart2pol Transform Cartesian coordinates to polar or cylindrical
cart2sph Transform Cartesian coordinates to spherical
case Execute block of code if condition is true
cast Cast variable to different data type
cat Concatenate arrays along specified dimension
catch Specify how to respond to error in try statement
cd Change working directory
caxis Color axis scaling
cgs Conjugate gradients squared method
cdf2rdf Convert complex diagonal form to real block diagonal form
cdfepoch Construct cdfepoch object for Common Data Format (CDF) export
cdfinfo Return information about CDF file
cdfread Read data from CDF file
cdftp Change current directory on FTP server
cdfwrite Write data to CDF file
ceil Round toward infinity
cell Construct cell array
cell2mat Convert cell array of matrices to single matrix
cell2struct Convert cell array to structure array
celldisp Display cell array contents.
cellfun Apply function to each cell in cell array
cellplot Graphically display structure of cell arrays
cellstr Create cell array of strings from character array
char Convert to character array (string)
checkin Check files into source control system (UNIX only)
checkout Check files out of source control system (UNIX only)
chol Cholesky factorization
cholinc Sparse incomplete Cholesky and Cholesky-Infinity factorizations
cholupdate Rank 1 update to Cholesky factorization
circshift Shift array circularly
cla Clear current axes
clabel Contour plot elevation labels
class Create object or return class of object
clc Clear Command Window
clear Remove items from workspace, freeing up system memory
clearserial Remove a serial port object from the MATLAB workspace
clf Clear current figure window
clipboard Copy and paste strings to and from system clipboard
clock Return current time as date vector
close Delete specified figure
closeftp Close connection to FTP server
colormapeditor Start colormap editor
closereq Default figure close request function
cmopts Get name of source control system
colamd Column approximate minimum degree permutation
colmmd Sparse column minimum degree permutation
colon Create vectors, array subscripting, and for loop iterations
colorbar Display colorbar showing the color scale
colordef Set default property values to display different color schemes
colormap Set and get the current colormap
commandhistory Open Command History window, or select it if already open
colorspec Color specification
colperm Sparse column permutation based on nonzero count
comet Two-dimensional comet plot
comet3 Three-dimensional comet plot
contourgroupproperties Modifying Properties
commandwindow Open Command Window, or select it if already open
compan Companion matrix
compass Plot arrows emanating from the origin
complex Construct complex data from real and imaginary components
computer Return information about computer on which MATLAB is running
cond Condition number with respect to inversion
condeig Condition number with respect to eigenvalues
condest 1-norm condition number estimate
coneplot Plot velocity vectors as cones in a 3-D vector field
conj Complex conjugate
continue Pass control to next iteration of for or while loop
contour Contour graph of a matrix
contour3 Three-dimensional contour plot
contourc Low-level contour plot computation
contourf Filled two-dimensional contour plot
createclassfromwsdl Create MATLAB object based on WSDL file
contourslice Draw contours in volume slice planes
contrast Grayscale colormap for contrast enhancement
conv Convolution and polynomial multiplication
conv2 Two-dimensional convolution
convhull Convex hull
convhulln N-dimensional convex hull
convn N-dimensional convolution
copyfile Copy file or directory
copyobj Copy graphics objects and their descendants
corrcoef Correlation coefficients
cos Cosine of an argument in radians
cosd Cosine of an argument in degrees
cosh Hyperbolic cosine
cot Cotangent of an argument in radians
cotd Cotangent of an argument in degrees
coth Hyperbolic cotangent
cov Covariance matrix
cplxpair Sort complex numbers into complex conjugate pairs
cputime Return elapsed CPU time
cscd Cosecant of an argument in degrees
createsoapmessage Create SOAP message to send to server
cross Vector cross product
csc Cosecant of an argument in radians
csch Hyperbolic cosecant
csvwrite Write comma-separated value file
csvread Read comma-separated value file
cumtrapz Cumulative trapezoidal numerical integration
cumprod Cumulative product
cumsum Cumulative sum
customverctrl Allow custom source control system (UNIX only)
curl Computes the curl and angular velocity of a vector field
cylinder Generate cylinder

d

datacursormode Enable/disable interactive data cursor mode
daspect Set or query the axes data aspect ratio
deleteproperty Remove custom property from object
datatipinfo Produce short description of input variable
date Return current date string
datenum Convert date and time to serial date number
datestr Convert date and time to string format
datetick Label tick lines using dates
datevec Convert date and time to vector of components
dbclear Clear breakpoints
dbcont Resume execution
dbdown Change local workspace context when in debug mode
dblquad Numerically evaluate double integral
dbmex Enable MEX-file debugging
dbquit Quit debug mode
dbstack Display function call stack
dbstatus List all breakpoints
dbstep Execute one or more lines from current breakpoint
dbstop Set breakpoints
dbtype List M-file with line numbers
dbup Change local workspace context
dde23 Solve delay differential equations (DDEs) with constant delays
ddeadv Set up advisory link
ddeexec Send string for execution
ddeget Extract properties from options structure created with ddeset
ddeinit Initiate DDE conversation
ddepoke Send data to application
ddereq Request data from application
ddeset Create or alter delay differential equations (DDE) options structure
ddeterm Terminate DDE conversation
ddeunadv Release advisory link
deal Distribute inputs to outputs
deblank Strip trailing blanks from end of string
debug List M-file debugging functions
dec2base Convert decimal to base N number in string
dec2bin Convert decimal to binary number in string
dec2hex Convert decimal to hexadecimal number in string
decic Compute consistent initial conditions for ode15i
deconv Deconvolution and polynomial division
del2 Discrete Laplacian
delaunay Delaunay triangulation
delaunay3 3-dimensional Delaunay tessellation
delaunayn N-dimensional Delaunay tessellation
delete Delete files or graphics objects
deletecom Delete COM control or server
deleteftp Delete file on FTP server
deleteserial Remove a serial port object from memory
deletetimer Remove a timer object from memory
demo Access product demos via Help browser
depdir List dependent directories of M-file or P-file
depfun List dependencies of M-file or P-file
det Matrix determinant
detrend Remove linear trends.
deval Evaluate the solution of a differential equation
diag Diagonal matrices and diagonals of a matrix
dialog Create and display dialog box
diary Save session to file
diff Differences and approximate derivatives
dir Display directory listing
dirftp List contents of directory on FTP server
disp Display text or array
display Overloaded method to display text or array
dispmemmapfile Display information about memory map object
dispserial Display serial port object summary information
disptimer Display information about timer object
divergence Computes the divergence of a vector field
dlmread Read ASCII-delimited file of numeric data into matrix
dlmwrite Write matrix to ASCII-delimited file
dmperm Dulmage-Mendelsohn decomposition
doc Display online documentation in Help browser
docopt Web browser for UNIX platforms
docsearch Open Help browser Search pane and search for specified term
dos Execute DOS command and return result
dot Vector dot product
double Convert to double -precision
dragrect Drag rectangles with mouse
drawnow Complete pending drawing events
dsearch Search for nearest point
dsearchn N-dimensional nearest point search

e

echo Echo M-files during execution
echodemo Run M-file demo step-by-step in Command Window
edit Edit or create M-file
eig Find eigenvalues and eigenvectors
eigs Find largest eigenvalues and eigenvectors of a sparse matrix
ellipj Jacobi elliptic functions
ellipke Complete elliptic integrals of the first and second kind
ellipsoid Generate ellipsoid
else Conditionally execute statements
elseif Conditionally execute statements
enableservice Enable DDE or Automation server
end Terminate block of code, or indicate last index of array
eomday Return last day of month
eps Floating-point relative accuracy
eq Test for equality
erf Error functions
erfc Error functions
erfcinv Error functions
erfcx Error functions
erfinv Error functions
error Display error message
errorbar Plot error bars along a curve
errordlg Create and display an error dialog box
errorbarseriesproperties Modifying Properties
etime Return time elapsed between date vectors
etree Elimination tree
etreeplot Plot elimination tree
eval Execute string containing MATLAB expression
evalc Evaluate MATLAB expression with capture
evalin Execute MATLAB expression in specified workspace
eventlisteners Return list of events attached to listeners
events Return list of events control can trigger
execute Execute MATLAB command in server
exifread Read EXIF information from JPEG and TIFF image files
exist Check if variables or functions are defined
exit Terminate MATLAB (same as quit)
exp Exponential
expint Exponential integral
expm Matrix exponential
expm1 Compute exp(x)-1 accurately for small values of x
eye Identity matrix
ezcontour Easy to use contour plotter
ezcontourf Easy to use filled contour plotter
ezmesh Easy to use 3-D mesh plotter
ezmeshc Easy to use combination mesh/contour plotter
ezplot Easy to use function plotter
ezplot3 Easy to use 3-D parametric curve plotter
ezpolar Easy to use polar coordinate plotter
ezsurf Easy to use 3-D colored surface plotter
ezsurfc Easy to use combination surface/contour plotter

f

factor Prime factors
factorial Factorial function
false Return logical 0 (false)
fclose Close one or more open files
fcloseserial Disconnect a serial port object from the device
feather Plot velocity vectors
feof Test for end-of-file
ferror Query MATLAB about errors in file input or output
feval Evaluate function
fevalcom Evaluate MATLAB function in server
fft Discrete Fourier transform
fft2 Two-dimensional discrete Fourier transform
fftn Multidimensional discrete Fourier transform
fftshift Shift zero-frequency component of discrete Fourier transform to center of spectrum
fftw Interface to the FFTW library run-time algorithm for tuning fast Fourier transform (FFT) computations
fgetl Read line from file, discarding newline character
fgetlserial Read one line of text from the device and discard the terminator
fgets Read line from file, keeping newline character
fgetsserial Read one line of text from the device and include the terminator
fieldnames Return field names of structure, or public fields of object
figure Create a figure graphics object
figure_props Modifying Properties
figurepalette Show or hide figure palette
fileattrib Set or get attributes of file or directory
filebrowser Display Current Directory browser, a tool for viewing files in current directory
fileformats Readable file formats
fileparts Return filename parts
filesep Return directory separator for current platform
fill Filled two-dimensional polygons
fill3 Filled three-dimensional polygons
filter Filter data with an infinite impulse response (IIR) or finite impulse response (FIR) filter
filter2 Two-dimensional digital filtering
find Find indices and values of nonzero elements
findall Find all graphics objects
findfigs Find visible off-screen figures
findobj Locate graphics objects with specific properties
findstr Find string within another, longer string
finish MATLAB termination M-file
fitsinfo Return information about FITS file
fitsread Extract data from FITS file
fix Round towards zero
flipdim Flip array along a specified dimension
fliplr Flip matrices left-right
flipud Flip matrices up-down
floor Round towards minus infinity
flops Count floating-point operations
flow A simple function of three variables
fminbnd Minimize a function of one variable on a fixed interval
fminsearch Minimize a function of several variables
fopen Open file, or obtain information about open files
fopenserial Connect a serial port object to the device
for Execute block of code specified number of times
format Set display format for output
fplot Plot a function between specified limits
fprintf Write formatted data to file
fprintfserial Write text to the device
frame2im Convert movie frame to indexed image
frameedit Create and edit print frames for Simulink and Stateflow block diagrams
fread Read binary data from file
freadserial Read binary data from the device
freqspace Determine frequency spacing for frequency response
frewind Move file position indicator to beginning of open file
fscanf Read formatted data from file
fscanfserial Read data from the device, and format as text
fseek Set file position indicator
ftell Get file position indicator
ftp Connect to FTP server, creating FTP object
full Convert sparse matrix to full matrix
fullfile Build full filename from parts
funm Evaluate general matrix function
fwrite Write binary data to file
fwriteserial Write binary data to the device
fzero Find zero of a function of one variable

g

getworkspacedata Get data from server workspace
gallery Test matrices
gamma Gamma functions
gammainc Gamma functions
gammaln Gamma functions
gca Get current axes handle
gcbf Return handle of figure containing object whose callback is executing
gcbo Return handle of object whose callback is executing
gcd Greatest common divisor
gcf Get current figure handle
gco Return handle of current object
ge Test for greater than or equal to
genpath Generate path string
genvarname Construct valid variable name from string
get Get object properties
getappdata Get value of application-defined data
getchararray Get character array from server
getcom Get property value from interface, or display properties
getenv Get environment variable
getfield Get field of structure array
getframe Get movie frame
getfullmatrix Get matrix from server
getmemmapfile Return memmapfile object properties
getplottool Utility function for creating and obtaining the figure components used for plot editing.
getpref Get preference
getserial Return serial port object properties
gettimer Display or get timer object properties
getvariable Returns data from variable in server workspace
grabcode Get MATLAB code from M-files published to HTML
ginput Graphical input from a mouse or cursor
global Declare global variables
gmres Generalized Minimum Residual method (with restarts)
gplot Plot set of nodes using an adjacency matrix
gradient Numerical gradient
griddata Data gridding
gt Test for greater than
graymon Set default figure properties for grayscale monitors
grid Grid lines for two- and three-dimensional plots
griddata3 Data gridding and hypersurface fitting for 3-D data
griddatan Data gridding and hypersurface fitting (dimension >= 2)
gsvd Generalized singular value decomposition
gtext Mouse placement of text in two-dimensional view
guidata Store or retrieve GUI data
guide Start the GUI Layout Editor
guihandles Create a structure of handles
gunzip Uncompress files in gzip format
gzip Compress files into gzip format

h

hggroupproperties Modifying Properties
hadamard Hadamard matrix
hankel Hankel matrix
hdf HDF interface
hdf5 HDF5 data type classes
hdf5info Return information about an HDF5 file
hdf5read Read data from an HDF5 file
hdf5write Write a Hierarchical Data Format (HDF) Version 5 file
hdfinfo Return information about an HDF or HDF-EOS file
hdfread Extract data from an HDF or HDF-EOS file
hdftool Browse and import data from HDF or HDF-EOS files
help Display help for MATLAB functions in Command Window
helpbrowser Display Help browser for access to full online documentation and demos
helpdesk Display Help browser
helpdlg Create and display help dialog box
helpwin Provide access to and display M-file help for all functions
hess Hessenberg form of a matrix
hex2dec Convert hexadecimal number string to decimal number
hex2num Convert hexadecimal number string to double-precision number
hgexport Export figure
hggroup Create hggroup object
hgtransform Create an hgtransform graphics object
hgload Load Handle Graphics object hierarchy from a file
hgsave Saves a Handle Graphics object hierarchy to a file
hgtransformproperties Modifying Properties
hidden Remove hidden lines from a mesh plot
hilb Hilbert matrix
hist Histogram plot
histc Histogram count
hold Hold current graph in the figure
home Move cursor to upper left corner of Command Window
horzcat Concatenate arrays horizontally
hostid Return MATLAB server host identification number
hsv2rgb Convert HSV colormap to RGB colormap
hypot Square root of sum of squares

i

ifft Inverse discrete Fourier transform
i Imaginary unit
if Conditionally execute statements
ifftshift Inverse FFT shift
ifft2 Two-dimensional inverse discrete Fourier transform
ifftn Multidimensional inverse discrete Fourier transform
im2frame Convert indexed image into movie format
image_props Modifying Properties
im2java Convert image to Java image
imag Imaginary part of a complex number
image Display image object
imformats Manage file format registry
imagesc Scale data and display an image object
imfinfo Information about graphics file
importdata Load data from disk file
import Add package or class to current Java import list
inferiorto Establish inferior class relationship
imread Read image from graphics file
imwrite Write image to graphics file
ind2rgb Convert an indexed image to an RGB image
ind2sub Subscripts from linear index
inf Infinity
inpolygon Detect points inside a polygonal region
info Display information about contacting The MathWorks
inline Construct an inline object
inmem Return names of M-files, MEX-files, Java classes in memory
inputdlg Create and display input dialog box
input Request user input
instrcallback Display event information when an event occurs
inputname Return variable name of function input
inspect Display Property Inspector
interpstreamspeed Interpolate stream line vertices from flow speed
instrfind Return serial port objects from memory to the MATLAB workspace
int16 Convert to signed integer
int2str Convert integer to string
int32 Convert to signed integer
int64 Convert to signed integer
int8 Convert to signed integer
interfaces List custom interfaces to COM server
interp1 One-dimensional data interpolation (table lookup)
interp2 Two-dimensional data interpolation (table lookup)
inv Matrix inverse
interp3 Three-dimensional data interpolation (table lookup)
interpft One-dimensional interpolation using the FFT method
interpn Multidimensional data interpolation (table lookup)
isvalidtimer Determine if timer object is valid
intersect Find set intersection of two vectors
intmax Largest possible value of specified integer type
intmin Smallest possible value of specified integer type
intwarning Control state of integer warnings
invhilb Inverse of the Hilbert matrix
invoke Invoke method on object or interface, or display methods
ipermute Inverse permute the dimensions of a multidimensional array
is Detect state
isa Determine if input is object of given class
isappdata True if application-defined data exists
iscell Determine if input is cell array
iscellstr Determine if input is cell array of strings
ischar Determine if item is character array
iscom Determine if input is COM object
isdir Determine if input is a directory
isempty Determine if array is empty
isequal Test arrays for equality
isevent Determine if input is event
isfield Determine if input is MATLAB structure array field
isequalwithequalnans Test arrays for equality, treating NaNs as equal
isfinite Detect finite elements of array
isfloat Determine if input is floating-point array
isglobal Determine if input is global variable
ishandle Returns true for graphics handles
ishold Returns current hold state
isinf Detect infinite elements of array
isinteger Determine if input is integer array
isinterface Determine if input is COM interface
isjava Determine if input is Java object
iskeyword Determine if input is MATLAB keyword
isletter Detect array elements that are letters of alphabet
islogical Determine if input is logical array
ismember Detect members of set
ismethod Determine if input is object method
isnan Detect NaN elements of array
isnumeric Determine if input is numeric array
isobject Determine if input is MATLAB OOPs object
isocaps Compute isosurface end cap geometry
isocolors Calculates isosurface and patch colors
isonormals Compute normals of isosurface vertices
isosurface Extract isosurface data from volume data
ispc Determine if PC (Windows) version of MATLAB
ispref Test for existence of preference
isprime Detect prime elements of array
isprop Determine if input is object property
isreal Determine if all array elements are real numbers
isscalar Determine if input is scalar
issorted Determine if set elements are in sorted order
isspace Detect space characters in array
issparse Determine if input is sparse
isstr Determine if input is character array
isstrprop Determine if string is of specified category
isstruct Determine if input is MATLAB structure array
isstudent Determine if Student Version of MATLAB
isunix Determine if UNIX version of MATLAB
isvalid Determine if serial port objects are valid
isvarname Determine if input is valid variable name
isvector Determine if input is vector

j

javaclasspath Set and get dynamic Java class path
j Imaginary unit
javaaddpath Add Java classes to MATLAB using dynamic Java class path
javaarray Construct Java array
javachk Generate error message based on Java feature support
javamethod Invoke Java method
javaobject Construct Java object
javarmpath Remove entries from dynamic Java class path

k

keyboard Get input from keyboard
kron Kronecker tensor product

l

lengthserial Length of serial port object array
lasterr Return last error message
lasterror Return last error message and related information
lastwarn Return last warning message
lcm Least common multiple
ldivide Left or right array division
le Test for less than or equal to
legend Display a legend on graphs
legendre Associated Legendre functions
length Length of vector
libfunctionsview Create window displaying information on functions in external library
libfunctions Return information on functions in external library
libisloaded Determine if external library is loaded
libpointer Create pointer object for use with external libraries
libstruct Construct structure as defined in external library
license Return license number or perform licensing task
light Create a light object
light_props Modifying Properties
lightangle Create or position a light object in spherical coordinates
lighting Select the lighting algorithm
lin2mu Convert linear audio signal to mu-law
line Create line object
line_props Modifying Properties
linespec Line specification syntax
listdlg Create and display list selection dialog box
lineseriesproperties Modifying Properties
linkaxes Synchronize limits of specified 2-D axes
linkprop Keep same value for corresponding properties
linsolve Solve a linear system of equations
linspace Generate linearly spaced vectors
load Load workspace variables from disk
loadcom Initialize control object from file
loadlibrary Load external library into MATLAB
loadobj User-defined extension of load function for user objects
loadserial Load serial port objects and variables into the MATLAB workspace
log Natural logarithm
log10 Common (base 10) logarithm
log1p Compute log(1+x) accurately for small values of x
log2 Base 2 logarithm and dissect floating-point numbers into exponent and mantissa
logical Convert numeric values to logical
logicaloperatorsshortcircuit Logical operations, with short-circuiting capability
logicaloperatorselementwise Elementwise logical operations on arrays
loglog Log-log scale plot
logm Matrix logarithm
logspace Generate logarithmically spaced vectors
lookfor Search for keyword in all help entries
lower Convert string to lowercase
ls Display directory contents on UNIX system
lscov Least squares solution in the presence of known covariance
lsqnonneg Linear least squares with nonnegativity constraints
lsqr LSQR method
lt Test for less than
lu LU matrix factorization
luinc Incomplete LU matrix factorizations

m

matlabwindows Start MATLAB (Windows systems)
magic Magic square
makehgtform Create 4-by-4 transform matrix
mat2cell Divide matrix into cell array of matrices
mat2str Convert matrix to string
material Controls the reflectance properties of surfaces and patches
max Maximum elements of an array
mex Compile MEX-function from C or Fortran source code
min Minimum elements of an array
matlabcolon Run specified function via hyperlink
matlabrc MATLAB startup M-file for single-user systems or system administrators
matlabroot Return root directory of MATLAB installation
matlabunix Start MATLAB (UNIX systems)
mode Find most frequent values in sample
mod Modulus after division
maximizecommandwindow Display server window on Windows desktop
mean Average or mean value of arrays
median Median value of arrays
memmapfile Construct memory map object
memory Help for memory limitations
menu Generate menu of choices for user input
mesh Mesh plots
meshc Mesh plots
meshgrid Generate X and Y matrices for three-dimensional plots
meshz Mesh plots
methods Display information on class methods
methodsview Display information on class methods in separate window
mexext Return MEX-filename extension
mfilename Return name of currently running M-file
mget Download file from FTP server
minimizecommandwindow Minimize size of server window
minres Minimum residual method
mislocked Determine if M-file or MEX-file cannot be cleared from memory
mkdir Make new directory
mkdirftp Create new directory on FTP server
mkpp Make a piecewise polynomial
mldivide right matrix division
mlint Check M-files for possible problems, and report results
mlintrpt Run mlint for file or directory, reporting results in Web browser
mlock Prevent clearing M-file or MEX-file from memory
mmfileinfo Return information about multimedia file
movefile Move file or directory
more Control paged output for Command Window
move Move or resize control in parent window
movie2avi Create Audio/Video Interleaved (AVI) movie from MATLAB movie
movegui Move GUI figure to specified location on screen
movie Play recorded movie frames
mrdivide right matrix division
mput Upload file or directory to FTP server
multibandread Read band interleaved data from binary file
msgbox Create and display message box
mtimes Matrix multiplication
mu2lin Convert mu-law audio signal to linear
multibandwrite Write multiband data to file
munlock Allow clearing M-file or MEX-file from memory

n

namelengthmax Return maximum identifier length
nan Not-a-Number
nargchk Validate number of input arguments
nargin Return number of function arguments
nargout Return number of function arguments
nargoutchk Validate number of output arguments
native2unicode Convert numeric bytes to Unicode characters
nchoosek Binomial coefficient or all combinations
ndgrid Generate arrays for multidimensional functions and interpolation
ndims Number of array dimensions
ne Test for inequality
newplot Determine where to draw graphics objects
nextpow2 Next power of two
nnz Number of nonzero matrix elements
noanimate Change EraseMode of all objects to normal
nonzeros Nonzero matrix elements
norm Vector and matrix norms
normest 2-norm estimate
not Find logical NOT of array or scalar input
notebook Open M-book in Microsoft Word (Windows only)
now Return current date and time
nthroot Real nth root of real numbers
null Null space of a matrix
num2cell Convert numeric array to cell array
num2hex Convert singles and doubles to IEEE hexadecimal strings.
num2str Convert number to string
numel Number of elements in array or subscripted array expression
nzmax Amount of storage allocated for nonzero matrix elements

o

ode113 Solve initial value problems for ordinary differential equations (ODEs)
ode15i Solve fully implicit differential equations, variable order method
ode15s Solve initial value problems for ordinary differential equations (ODEs)
ode23 Solve initial value problems for ordinary differential equations (ODEs)
ode23s Solve initial value problems for ordinary differential equations (ODEs)
ode23t Solve initial value problems for ordinary differential equations (ODEs)
ode23tb Solve initial value problems for ordinary differential equations (ODEs)
ode45 Solve initial value problems for ordinary differential equations (ODEs)
odefile Define a differential equation problem for ordinary differential equation (ODE) solvers
odeget Extract properties from options structure created with odeset
odeset Create or alter options structure for input to ordinary differential equation (ODE) solvers
odextend Extend the solution of an initial value problem for an ordinary differential equation (ODE)
ones Create an array of all ones
open Open files based on extension
openfig Open new copy or raise existing copy of saved figure
opengl Control OpenGL rendering
openvar Open workspace variable in Array Editor or other tool for graphical editing
optimget Get optimization options structure parameter values
optimset Create or edit an optimization options structure
or Find logical OR of array or scalar inputs
ordeig Eigenvalues of quasitriangular matrices
orderfields Order fields of structure array
ordqz Reorder eigenvalues in QZ factorization
ordschur Reorder eigenvalues in Schur factorization
orient Set paper orientation for printed output
orth Range space of a matrix
otherwise Default part of switch statement

p

parsesoapresponse Convert response string from SOAP server into MATLAB data types
pack Consolidate workspace memory
pagesetupdlg Display page setup dialog box
pan Pan the view of a graph interactively
pareto Pareto chart
printpreview Preview figure to be printed
partialpath Partial pathname description
pascal Pascal matrix
patch Create patch graphics object
patch_props Modifying Properties
path View or change MATLAB directory search path
path2rc Save current MATLAB search path to pathdef.m file
pathdef List of directories in MATLAB search path
pathsep Return path separator for current platform
pathtool Open Set Path dialog box to view and change MATLAB path
pause Halt execution temporarily
pbaspect Set or query the plot box aspect ratio
pcg Preconditioned conjugate gradients method
pchip Piecewise Cubic Hermite Interpolating Polynomial (PCHIP)
pcode Create preparsed pseudocode file (P-file)
pcolor Pseudocolor plot
pdepe Solve initial-boundary value problems for systems of parabolic and elliptic partial differential equations (PDEs) in one space variable and time
pdeval Evaluate the numerical solution of a PDE using the output of pdepe
peaks A sample function of two variables.
perl Call Perl script using appropriate operating system executable
perms All possible permutations
permute Rearrange the dimensions of a multidimensional array
persistent Define persistent variable
pi Ratio of a circle's circumference to its diameter, http://itp.tugraz.at/matlab/techdoc/ref/math_p47.gif
pie Pie chart
pie3 Three-dimensional pie chart
pinv Moore-Penrose pseudoinverse of a matrix
planerot Givens plane rotation
playshow Run M-file demo (deprecated; use echodemo instead)
plot Linear 2-D plot
plot3 3-D line plot
plotbrowser Show or hide figure plotbrowser
plotedit Start plot edit mode to allow editing and annotation of plots
plotmatrix Draw scatter plots
plottools Show or hide the plot tools
plotyy Create graphs with y-axes on both left and right side
pol2cart Transform polar or cylindrical coordinates to Cartesian
polar Plot polar coordinates
poly Polynomial with specified roots
polyarea Area of polygon
polyder Polynomial derivative
polyeig Polynomial eigenvalue problem
polyfit Polynomial curve fitting
polyint Integrate polynomial analytically
polyval Polynomial evaluation
polyvalm Matrix polynomial evaluation
pow2 Base 2 power and scale floating-point numbers
power Array power
ppval Evaluate piecewise polynomial
prefdir Return directory containing preferences, history, and layout files
preferences Display Preferences dialog box for MATLAB and related products
primes Generate list of prime numbers
print Create hardcopy output
printdlg Display print dialog box
printopt Create hardcopy output
publish Run M-file script containing cells, and save results to file of specified type
prod Product of array elements
profile Profile execution time for function
profsave Save profile report in HTML format
propedit Starts the Property Editor
propeditcom Display built-in property page for control
propertyeditor Show or hide property editor
psi Psi (polygamma) function
putworkspacedata Store data in server workspace
putchararray Store character array in server
putfullmatrix Store matrix in server
pwd Identify current directory

q

qrdelete Delete column or row from QR factorization
qmr Quasi-minimal residual method
qr Orthogonal-triangular decomposition
qrinsert Insert column or row into QR factorization
qrupdate
quad Numerically evaluate integral, adaptive Simpson quadrature
quad8 Numerically evaluate integral, adaptive Simpson quadrature
quadl Numerically evaluate integral, adaptive Lobatto quadrature
quadv Vectorized quadrature
questdlg Create and display question dialog box
quit Terminate MATLAB
quitcom Terminate MATLAB server
quiver Quiver or velocity plot
quiver3 Three-dimensional velocity plot
qz QZ factorization for generalized eigenvalues
quivergroupproperties Modifying Properties

r

rectangle_props Modifying Properties
rand Uniformly distributed pseudorandom numbers
randn Normally distributed random numbers and arrays
randperm Random permutation
rank Rank of a matrix
rat Rational fraction approximation
rats Rational fraction approximation
rbbox Create rubberband box for area selection
rcond Matrix reciprocal condition number estimate
rdivide Left or right array division
readasync Read data asynchronously from the device
real Real part of complex number
reallog Natural logarithm for nonnegative real arrays
realmax Largest positive floating-point number
realmin Smallest positive floating-point number
realpow Array power for real-only output
realsqrt Square root for nonnegative real arrays
record Record data and event information to a file
rectangle Create a 2-D rectangle object
reducepatch Reduce the number of patch faces
rectint Rectangle intersection area.
recycle Set option to move deleted files to recycle folder
reducevolume Reduce the number of elements in a volume data set
relationaloperators Relational operations
refresh Redraw current figure
refreshdata Refresh data in graph when data source is specified
regexp Match regular expression
regexpi Match regular expression
regexprep Replace string using regular expression
registerevent Register event handler with control's event
rehash Refresh function and file system path caches
rmappdata Remove application-defined data
release Release interface
rem Remainder after division
rename Rename file on FTP server
repmat Replicate and tile an array
reset Reset graphics object properties to their defaults
reshape Reshape array
residue Convert between partial fraction expansion and polynomial coefficients
rethrow Reissue error
return Return to invoking function
restoredefaultpath Restore default MATLAB search path
rgb2hsv Convert RGB colormap to HSV colormap
rgbplot Plot colormap
ribbon Ribbon plot
rmdirftp Remove directory on FTP server
rmdir Remove directory
rootobject Root object properties
rmfield Remove fields from structure
rmpath Remove directories from MATLAB search path
rmpref Remove preference
run Run script that is not on current path
rootobject_props Modifying Properties
roots Polynomial roots
rose Angle histogram
rosser Classic symmetric eigenvalue test problem
rot90 Rotate matrix 90°
rotate Rotate object about a specified direction
rotate3d Rotate 3-D view using mouse
round Round to nearest integer
rref Reduced row echelon form
rsf2csf Convert real Schur form to complex Schur form

s

save Save workspace variables on disk
savepath Save current MATLAB search path to pathdef.m file
saveas Save figure or model using specified format
savecom Serialize control object to file
saveobj User-defined extension of save function for user objects
selectmoveresize Select, move, resize, or copy axes and uicontrol graphics objects
saveserial Save serial port objects and variables to a MAT-file
scatter Plot a scatter (bubble) graph
scatter3 3-D scatter plot
schur Schur decomposition
script Script M-file description
scattergroupproperties Modifying Properties
sec Secant of an argument in radians
secd Secant of an argument in degrees
sech Hyperbolic secant
showplottool Show or hide one of the figure plot tools
semilogx Semilogarithmic plots
semilogy Semilogarithmic plots
send Return list of events control can trigger
sendmail Send e-mail message to list of addresses
serial Create a serial port object
serialbreak Send a break to the device connected to the serial port
set Set object properties
setappdata Specify application-defined data
setcom Set object or interface property to specified value
setdiff Find set difference of two vectors
setfield Set value of structure array field
setpref Set preference
setserial Configure or display serial port object properties
setstr Set string flag
settimer Configure or display timer object properties
setxor Find set exclusive OR of two vectors
shading Set color shading properties
shiftdim Shift dimensions
specialcharacters Special characters
shrinkfaces Reduce the size of patch faces
sign Signum function
sin Sine of an argument in radians
sind Sine of an argument in degrees
single Convert to single-precision
sinh Hyperbolic sine of an argument in radians
size Array dimensions
sizeserial Size of serial port object array
slice Volumetric slice plot
smooth3 Smooth 3-D data
sort Sort array elements in ascending or descending order
sortrows Sort rows in ascending order
sound Convert vector into sound
soundsc Scale data and play as sound
spalloc Allocate space for sparse matrix
sparse Create sparse matrix
spaugment Form least squares augmented system
spconvert Import matrix from sparse matrix external format
spdiags Extract and create sparse band and diagonal matrices
sph2cart Transform spherical coordinates to Cartesian
speye Sparse identity matrix
spfun Apply function to nonzero sparse matrix elements
sprandsym returns a symmetric random matrix whose lower triangle and diagonal have the same structure as S. Its elements are normally distributed, with mean 0 and variance 1.
sphere Generate sphere
spinmap Spin colormap
spline Cubic spline data interpolation
spones Replace nonzero sparse matrix elements with ones
spparms Set parameters for sparse matrix routines
sprand Sparse uniformly distributed random matrix
sprandn Sparse normally distributed random matrix
sprank Structural rank
stopasync Stop asynchronous read and write operations
sprintf Write formatted data to string
spy Visualize sparsity pattern
sqrt Square root
sqrtm Matrix square root
squeeze Remove singleton dimensions
ss2tf Convert state-space filter parameters to transfer function form
sscanf Read string under format control
stairs Stairstep graph
start Start timer(s) running
startat Start timer(s) running at the specified time
stairseriesproperties Modifying Properties
startup MATLAB startup M-file for user-defined options
std Standard deviation
stem Plot discrete sequence data
stem3 Plot three-dimensional discrete sequence data
stop Stop timer(s)
str2double Convert string to double-precision value
stemseriesproperties Modifying Properties
streamparticles Display stream particles
str2func Construct function handle from function name string
str2mat Form blank-padded character matrix from strings
str2num Convert string to number
strcat Concatenate strings horizontally
strcmp Compare strings
strcmpi Compare strings, ignoring case
stream2 Compute 2-D streamline data
stream3 Compute 3-D streamline data
streamline Draw streamlines from 2-D or 3-D vector data
surfaceplotproperties Modifying Properties
streamribbon Create a 3-D stream ribbon plot
streamslice Draws streamlines in slice planes
streamtube Creates a 3-D stream tube plot
strfind Find one string within another
strings MATLAB string handling
strjust Justify character array
strmatch Find possible matches for string
strncmp Compare first n characters of strings
strncmpi Compare first n characters of strings, ignoring case
strread Read formatted data from string
strrep Find and replace substring
strtok Return selected parts of string
strtrim Remove leading and trailing white-space from string
struct Create structure array
struct2cell Convert structure to cell array
structfun Apply function to each field of scalar structure
strvcat Concatenate strings vertically
sub2ind Single index from subscripts
subplot Create axes object in tiled positions
subsasgn Overloaded method for A(I)=B, A{I}=B, and A.field=B
subsindex Overloaded method for X(A)
subspace Angle between two subspaces
subsref Overloaded method for A(I), A{I} and A.field
substruct Create structure argument for subsasgn or subsref
subvolume Extract subset of volume data set
sum Sum of array elements
superiorto Establish superior class relationship
support Open MathWorks Technical Support Web page
surf 3-D shaded surface plot
surf2patch Convert surface data to patch data
surface Create surface object
surface_props Modifying Properties
surfnorm Compute and display 3-D surface normals
surfc 3-D shaded surface plot
surfl Surface plot with colormap-based lighting
svds A few singular values
svd Singular value decomposition
swapbytes Swap byte ordering
switch Switch among several cases, based on expression
symamd Symmetric approximate minimum degree permutation
symbfact Symbolic factorization analysis
symmlq Symmetric LQ method
symmmd Sparse symmetric minimum degree ordering
symrcm Sparse reverse Cuthill-McKee ordering
symvar Determine the symbolic variables in an expression
syntax Two ways to call MATLAB functions
system Execute operating system command and return result

t

timerfindall Find timer objects, including invisible objects
tan Tangent of an argument in radians
tand Tangent of an argument in degrees
tanh Hyperbolic tangent
tar Compress files into TAR-file
tempdir Return name of system's temporary directory
tempname Unique name for temporary file
tetramesh Tetrahedron mesh plot
texlabel Produce TeX format from character string
text Create text object in current axes
text_props Modifying Properties
textread Read data from text file, write to multiple outputs
textscan Read data from text file, convert, and write to cell array
textwrap Return wrapped string matrix for given uicontrol
tic Measure performance using stopwatch timer
timer Construct timer object
timerfind Find timer objects
todatenum Convert CDF epoch object to MATLAB datenum
title Add title to current axes
toc Measure performance using stopwatch timer
toeplitz Toeplitz matrix
trace Sum of diagonal elements
trapz Trapezoidal numerical integration
treelayout Lay out tree or forest
treeplot Plot picture of tree
tril Lower triangular part of a matrix
trimesh Triangular mesh plot
triplequad Numerically evaluate triple integral
triplot 2-D triangular plot
trisurf Triangular surface plot
triu Upper triangular part of a matrix
true Return logical 1 (true)
try Attempt to execute block of code, and catch errors
tsearch Search for enclosing Delaunay triangle
tsearchn N-dimensional closest simplex search
type Display contents of file
typecast Convert data types without changing underlying data

u

uibuttongroup Create container object to exclusively manage radio buttons and toggle buttons
uibuttongroupproperties Modifying Properties
uicontextmenu Create context menu
uicontextmenu_props Modifying Properties
uicontrol Create user interface control object
uicontrol_props Modifying Properties
uigetdir Display standard dialog box for selecting a directory
uigetfile Display standard dialog box for retrieving files
uigetpref Display dialog box for retrieving preferences
uiimport Open Import Wizard interface to import data
uimenu Create menus on figure windows
uimenu_props Modifying Properties
uint16 Convert to unsigned integer
uint32 Convert to unsigned integer
uint64 Convert to unsigned integer
uint8 Convert to unsigned integer
uiopen Display file selection dialog box with appropriate file filters
uipanel Create panel container object
uipanelproperties Modifying Properties
uipushtool Create push button on a toolbar
uipushtool_props Modifying Properties
uiputfile Display standard dialog box for saving files
uiresume Control program execution
uisave Display standard dialog box for saving workspace variables
uisetcolor Display standard dialog box for setting an object's ColorSpec
uisetfont Display standard dialog box for setting an object's font characteristics
uisetpref Manage preferences used in uigetpref
uistack Restack objects
uitoggletool Create toggle button on a toolbar
uitoggletool_props Modifying Properties
uitoolbar Create toolbar on a figure
uitoolbarproperties Modifying Properties
uiwait Control program execution
undocheckout Undo previous checkout from source control system (UNIX only)
unicode2native Convert Unicode characters to numeric bytes
union Find set union of two vectors
unique Find unique elements of vector
unix Execute UNIX command and return result
unloadlibrary Unload external library from memory
unmkpp Piecewise polynomial details
unregisterallevents Unregister all events for control
unregisterevent Unregister event handler with control's event
untar Extract contents of TAR-file
unwrap Correct phase angles to produce smoother phase plots
unzip Extract contents of ZIP-file
upper Convert string to uppercase
urlread Read content at URL
urlwrite Save contents of URL to file
usejava Determine if Java feature is supported in MATLAB

v

varargin Return variable number of arguments
var Variance
vander Vandermonde matrix
volumebounds Return coordinate and color limits for volume data
varargout Return variable number of arguments
vectorize Vectorize expression
ver Display version information for MathWorks products
verctrl Source control actions (Windows only)
version Display version number for MATLAB
vertcat Concatenate arrays vertically
view Viewpoint specification
viewmtx View transformation matrices
voronoi Voronoi diagram
voronoin N-dimensional Voronoi diagram

w

waitforbuttonpress Wait for key or mouse button press
wait Wait until a timer stops running
waitbar Display waitbar
waitfor Wait for condition before resuming execution
waterfall Waterfall plot
warndlg Display warning dialog box
warning Display warning message
wavfinfo Return information about Microsoft WAVE (.wav) sound file
wavplay Play recorded sound on PC-based audio output device
wavread Read Microsoft WAVE (.wav) sound file
wavrecord Record sound using PC-based audio input device.
wavwrite Write Microsoft WAVE (.wav) sound file
web Open Web site or file in Web browser or Help browser
weekday Return day of week
what List MATLAB files in current directory
whatsnew Display Release Notes for MathWorks products
which Locate functions and files
while Repeatedly execute statements while condition is true
whitebg Change axes background color
who List variables in workspace
whos List variables in workspace
wilkinson Wilkinson's eigenvalue test matrix
winopen Open file in appropriate application (Windows only)
winqueryreg Get item from Microsoft Windows registry
wk1finfo Determine if file contains Lotus WK1 worksheet
wk1read Read Lotus123 spreadsheet file (.wk1)
wk1write Write matrix to Lotus123 WK1 spreadsheet file
workspace Display Workspace browser, a tool for managing the workspace

x

xlabel Label the x-, y-, and z-axis
xlim Set or query axis limits
xlsfinfo Determine if file contains Microsoft Excel (.xls) spreadsheet
xlsread Read Microsoft Excel spreadsheet file (.xls)
xlswrite Write Microsoft Excel spreadsheet file (.xls)
xmlread Parse XML document and return Document Object Model node
xmlwrite Serialize XML Document Object Model node
xor Logical exclusive-OR
xslt Transform XML document using XSLT engine

y

ylabel Label the x-, y-, and z-axis
ylim Set or query axis limits

z

zeros Create an array of all zeros
zip Compress files into ZIP-file archive
zlabel Label the x-, y-, and z-axis
zlim Set or query axis limits
zoom Zoom in and out on a 2-D plot