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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 <a name="ops_arithmetic_operators"></a>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
annotationarrowproperties
annotationrectangleproperties
annotationellipseproperties
annotationlineproperties
ans	The most recent answer
any	Determine if any array elements are nonzero
annotationtextarrowproperties
annotationtextboxproperties
area	Filled area 2-D plot
asec	Inverse secant, result in radians
areaseriesproperties
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
axis	Axis scaling and appearance
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b

barseriesproperties
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 <a href="bvpset.html">bvpset</a>
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 <a href="bvp4c.html">bvp4c</a>
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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 <a href="light.html">object</a> 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
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
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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 <a href="ddeset.html">ddeset</a>
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
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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
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
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
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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
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h

hggroupproperties
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
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
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
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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
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k

keyboard	Get input from keyboard
kron	Kronecker tensor product
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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
lightangle	Create or position a <a href="light.html">light</a> object in spherical coordinates
lighting	Select the lighting algorithm
lin2mu	Convert linear audio signal to mu-law
line	Create line object
line_props
linespec	Line specification syntax
listdlg	Create and display list selection dialog box
lineseriesproperties
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 <a name="logical_ops_shortcircuit"></a>operations, with short-circuiting capability
logicaloperatorselementwise	Elementwise <a name="logical_ops_elementwise"></a>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
	null

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<a name="matlab_env_matlabcolon"></a> specified function via hyperlink
matlabrc	MATLAB startup M-file for single-user systems or system administrators
matlabroot	Return ro<a name="matlab_ref_matlabroot"></a>ot directory of MATLAB installation
matlabunix	Start M<a name="matlab_unix_refpage"></a>ATLAB (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	<a name="mldivide"></a>Left or <a name="mrdivide"></a>right matrix division
mlint	Check M-files for possible problems, and report results
mlintrpt	Run <a href="../../techdoc/ref/mlint.html">mlint</a> 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	<a name="mldivide"></a>Left or <a name="mrdivide"></a>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
	null		null

o

ode113	<a name="explicit_solvers"></a>Solve initial value problems for ordinary differential equations (ODEs)
ode15i	Solve fully implicit differential equations, variable order method
ode15s	<a name="explicit_solvers"></a>Solve initial value problems for ordinary differential equations (ODEs)
ode23	<a name="explicit_solvers"></a>Solve initial value problems for ordinary differential equations (ODEs)
ode23s	<a name="explicit_solvers"></a>Solve initial value problems for ordinary differential equations (ODEs)
ode23t	<a name="explicit_solvers"></a>Solve initial value problems for ordinary differential equations (ODEs)
ode23tb	<a name="explicit_solvers"></a>Solve initial value problems for ordinary differential equations (ODEs)
ode45	<a name="explicit_solvers"></a>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 <a href="odeset.html">odeset</a>
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
	null		null		null

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
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 <a href="pdepe.html">pdepe</a>
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, <img src="math_p47.gif" alt="" align=bottom>
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 <a href="../../techdoc/ref/echodemo.html">echodemo</a> 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
	null		null		null

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
	null		null		null		null

r

rectangle_props
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 <a href="../infotool/hgprop/doc_frame.html">properties</a> 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
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
	null		null		null

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
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 <a name="ops_special_characters"></a>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
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
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
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
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
	null		null

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
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
	null		null		null

u

uibuttongroup	Create container object to exclusively manage radio buttons and toggle buttons
uibuttongroupproperties
uicontextmenu	Create context menu
uicontextmenu_props
uicontrol	Create user interface control object
uicontrol_props
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
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
uipushtool	Create push button on a toolbar
uipushtool_props
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 <a href="colorspec.html">ColorSpec</a>
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
uitoolbar	Create toolbar on a figure
uitoolbarproperties
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
	null

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
	null

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
	null		null

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
	null

y

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

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