Matlab Reference
----------------------------------------------------------------------MATLAB's Main Categories of Functions
----------------------------------------------------------------------general
General purpose commands.
ops
Operators and special characters.
lang
Language constructs and debugging.
elmat
Elementary matrices and matrix manipulation.
specmat
Specialized matrices.
elfun
Elementary math functions.
specfun
Specialized math functions.
matfun
Matrix functions - numerical linear algebra.
datafun
Data analysis and Fourier transform functions.
polyfun
Polynomial and interpolation functions.
funfun
Function functions - nonlinear numerical methods.
sparfun
Sparse matrix functions.
plotxy
Two dimensional graphics.
plotxyz
Three dimensional graphics.
graphics
General purpose graphics functions.
color
Color control and lighting model functions.
sounds
Sound processing functions.
strfun
Character string functions.
iofun
Low-level file I/O functions.
external
External interface library
demos
Demonstrations and samples
General Purpose Commands
-----------------------------------------------------------------------------Managing Commands and Functions
-----------------------------------------------------------------------------demo
Run demos.
expo
Run MATLAB EXPO demonstration program.
help
Online documentation.
info
Information about MATLAB and The MathWorks.
lasterr
Last error message generated.
lookfor
Keyword search through the help entries.
path
Control MATLAB's search path.
subscribe
Become a subscribing MATLAB user.
type
List M-file.
ver
Current MATLAB and toolbox versions.
version
Current MATLAB version number.
what
Directory listing of M-, MAT- and MEX-files.
whatsnew
Display README files for MATLAB and toolboxes.
which
Locate functions and files.
----------------------------------------------------------------------------------------------------------------------------------------------------------Managing Variables and the Workspace
-----------------------------------------------------------------------------clear
Clear variables and functions from memory.
disp
Display matrix or text.
length
Length of vector.
load
Retrieve variables from disk.
pack
Consolidate workspace memory.
save
Save workspace variables to disk.
size
Size of matrix.
who
List current variables.
whos
List current variables, long form.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------Working with Files and the Operating Environment
-----------------------------------------------------------------------------------------------cd
Change current working directory.
cedit
Set command line editing parameters (UNIX only).
delete
Delete file.
diary
Save text of MATLAB session.
dir
Directory listing.
getenv
Get environment value.
hostid
MATLAB server host identification number.
ls
Directory listing.
matlabroot
Root directory of MATLAB installation.
pwd
Show current working directory.
tempdir
Name of system temporary directory.
tempname
Unique name for temporary file.
terminal
Set graphics terminal type.
unix
Execute operating system command; return result.
!
Execute operating system command.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------Controlling the Command Window
--------------------------------------------------------------------clc
Clear command window.
echo
Echo commands inside script files.
format
Set output format.
home
Send cursor home.
more
Control paged output in command window.
-------------------------------------------------------------------------------------------------------------------------------------------Starting and Quitting from MATLAB
-----------------------------------------------------------------------matlabrc
Master startup M-file.
quit
Terminate MATLAB.
startup
M-file executed when MATLAB is invoked.
------------------------------------------------------------------------
Operators and Special Characters
------------------------------------------------------------Operators and Special Characters
------------------------------------------------------------+
Plus.
Minus
*
Matrix multiplication.
.*
Array multiplication.
^
Matrix power.
.^
Array power.
kron
Kronecker tensor product.
\
Backslash or left division.
/
Slash or right division.
./
Array division.
:
Colon.
()
Parentheses.
[]
Brackets.
.
Decimal point.
..
Parent directory.
...
Continuation.
,
Comma.
;
Semicolon.
%
Comment.
!
Exclamation point.
'
Transpose and quote.
.'
Nonconjugated transpose.
=
Assignment.
==
Equality.
<>
Relational operators.
&
Logical AND.
|
Logical OR.
~
Logical NOT.
xor
Logical EXCLUSIVE OR.
---------------------------------------------------------------------------------------------------------------------Logical Functions
---------------------------------------------------------all
True if all elements of vector are true.
any
True if any element of vector is true.
exist
Check if variables or functions exist.
find
Find indices of nonzero elements.
finite
True for finite elements.
isempty
True for empty matrix.
ishold
True if hold is on.
isieee
True for IEEE floating-point arithmetic.
isinf
True for infinite elements.
isletter
True for alphabetic character.
isnan
True for Not-A-Number.
isreal
True if all matrix elements are real.
issparse
True for sparse matrix.
isstr
True for text string.
----------------------------------------------------------
Language Constructs and Debugging
----------------------------------------------------------------------MATLAB as a Programming Language
----------------------------------------------------------------------eval
Execute string with MATLAB expression.
feval
Execute function specified by string.
function
Add new function.
global
Define global variable.
nargchk
Validate number of input arguments.
---------------------------------------------------------------------------------------------------------------------------------------Control Flow
-----------------------------------------------------------------break
Terminate execution of loop.
else
Used with if.
elseif
Used with if.
end
Terminate the scope of for, while and if statements.
error
Display message and abort function.
for
Repeat statements a specific number of times.
if
Conditionally execute statements.
return
Return to invoking function.
while
Repeat statements an indefinite number of times.
-------------------------------------------------------------------------------------------------------------------------------Interactive Input
--------------------------------------------------------------input
Prompt for user input.
keyboard
Invoke keyboard as if it were a script file.
menu
Generate menu of choices for user input.
pause
Wait for user response.
-------------------------------------------------------------------------------------------------------Debugging
-----------------------------------------dbclear
Remove breakpoint.
dbcont
Resume execution.
dbdown
Change local workspace context.
dbquit
Quit debug mode.
dbstack
List who called whom.
dbstatus
List all breakpoints.
dbstep
Execute one or more lines.
dbstop
Set breakpoint.
dbtype
List M-file with line numbers.
dbup
Change local workspace context.
mexdebug
Enable MEX-file debugging.
------------------------------------------
Matrices and Matrix Manipulation
Elementary Matrices
--------------------------------------------------------------------Elementary Matrices
--------------------------------------------------------------------eye
Identity matrix.
gallery
Test matrices - matrix condition and eigenvalues.
linspace
Linearly spaced vector.
logspace
Logarithmically spaced vector.
meshgrid
X and Y arrays for 3-D plots.
ones
Ones matrix.
rand
Uniformly distributed random numbers.
randn
Normally distributed random numbers.
zeros
Zeros matrix.
:
Regularly spaced vector.
----------------------------------------------------------------------------------------------------------------------------------------Special Variables and Constants
--------------------------------------------------------------------ans
Most recent answer.
computer
Computer type.
eps
Floating-point relative accuracy.
flops
Count of floating-point operations.
i, j
Imaginary unit.
inf
Infinity.
NaN
Not-a-Number.
nargin
Number of function input arguments.
nargout
Number of function output arguments.
pi
3.1415926535897....
realmax
Largest floating-point number.
realmin
Smallest floating-point number
-------------------------------------------------------------------------------------------------------------Time and Dates
-----------------------------------------clock
Wall clock.
cputime
Elapsed CPU time.
date
Calendar.
etime
Elapsed time function.
tic, toc
Stopwatch timer functions.
-----------------------------------------------------------------------------------------------------------Matrix Manipulation
------------------------------------------------------------------diag
Create or extract diagonals.
fliplr
Flip matrix in the left/right direction.
flipud
Flip matrix in the up/down direction.
isreal
True for matrix containing real elements only.
reshape
Change size.
rot90
Rotate matrix 90 degrees.
tril
Extract lower triangular part.
triu
Extract upper triangular part.
:
Index into matrix, rearrange matrix.
-------------------------------------------------------------------
Specialized Matrices
---------------------------------------------------------------Specialized Matrices
---------------------------------------------------------------compan
Companion matrix.
hadamard
Hadamard matrix.
hankel
Hankel matrix.
hilb
Hilbert matrix.
invhilb
Inverse Hilbert matrix.
magic
Magic square.
pascal
Pascal matrix.
rosser
Classic symmetric eigenvalue test problem.
toeplitz
Toeplitz matrix.
vander
Vandermonde matrix.
wilkinson
Wilkinson's eigenvalue test matrix.
----------------------------------------------------------------
Math Functions
Elementary Functions
--------------------------------------------------------Elementary Math Functions
--------------------------------------------------------abs
Absolute value.
acos
Inverse cosine.
acosh
Inverse hyperbolic cosine.
acot
Inverse cotangent.
acoth
Inverse hyperbolic cotangent.
acsc
Inverse cosecant.
acsch
Inverse hyperbolic cosecant.
angle
Phase angle.
asec
Inverse secant.
asech
Inverse hyperbolic secant.
asin
Inverse sine.
asinh
Inverse hyperbolic sine.
atan
Inverse tangent.
atan2
Four quadrant inverse tangent.
atanh
Inverse hyperbolic tangent.
ceil
Round towards plus infinity.
conj
Complex conjugate.
cos
Cosine.
cosh
Hyperbolic cosine.
cot
Cotangent.
coth
Hyperbolic cotangent.
csc
Cosecant.
csch
Hyperbolic cosecant.
exp
Exponential.
fix
Round towards zero.
floor
Round towards minus infinity.
gcd
Greatest common divisor.
imag
Complex imaginary part.
lcm
Least common multiple.
log
Natural logarithm.
log10
Common logarithm.
real
Complex real part.
rem
Remainder after division.
round
Round towards nearest integer.
sec
Secant.
sech
Hyperbolic secant.
sign
Signum function.
sin
Sine.
sinh
Hyperbolic sine.
sqrt
Square root.
tan
Tangent.
tanh
Hyperbolic tangent.
---------------------------------------------------------
Specialized Math Functions
-----------------------------------------------------------------------Specialized Math Functions
-----------------------------------------------------------------------bessel
Bessel functions.
besseli
Modified Bessel functions of the first kind.
besselj
Bessel functions of the first kind.
besselk
Modified Bessel functions of the second kind.
bessely
Bessel functions of the second kind.
beta
Beta function.
betainc
Incomplete beta function.
betaln
Logarithm of beta function.
ellipj
Jacobi elliptic functions.
ellipke
Complete elliptic integral.
erf
Error function.
erfc
Complementary error function.
erfcx
Scaled complementary error function.
erfinv
Inverse error function.
expint
Exponential integral.
gamma
Gamma function.
gammainc
Incomplete gamma function.
gammaln
Logarithm of gamma function.
legendre
Associated Legendre functions.
log2
Dissect floating point numbers.
pow2
Scale floating point numbers.
rat
Rational approximation.
rats
Rational output.
------------------------------------------------------------------------
Matrix Functions - Numerical Linear
Algebra
---------------------------------------------------------------Matrix Analysis
---------------------------------------------------------------cond
Matrix condition number.
det
Determinant.
etree
Elimination tree of a matrix.
norm
Matrix or vector norm.
null
Null space.
orth
Orthogonalization.
rcond
LINPACK reciprocal condition estimator.
rank
Number of linearly independent rows or columns.
rref
Reduced row echelon form.
subspace
Angle between two subspaces.
trace
Sum of diagonal elements.
---------------------------------------------------------------------------------------------------------------------------------Linear Equations
------------------------------------------------------------------chol
Cholesky factorization.
inv
Matrix inverse.
lscov
Least squares in the presence of known covariance.
lu
Factors from Gaussian elimination.
nnls
Non-negative least-squares.
pinv
Pseudoinverse.
qr
Orthogonal-triangular decomposition.
\ and /
Linear equation solution.
--------------------------------------------------------------------------------------------------------------------------------------------------Eigenvalues and Singular Values
--------------------------------------------------------------------------------balance
Diagonal scaling to improve eigenvalue accuracy.
cdf2rdf
Complex diagonal form to real block diagonal form.
eig
Eigenvalues and eigenvectors.
hess
Hessenberg form.
poly
Characteristic polynomial.
qz
Generalized eigenvalues.
rsf2csf
Real block diagonal form to complex diagonal form.
schur
Schur decomposition.
svd
Singular value decomposition.
----------------------------------------------------------------------------------------------------------------------------------Matrix Functions
--------------------------------------------------expm
Matrix exponential.
funm
Evaluate general matrix function.
logm
Matrix logarithm.
sqrtm
Matrix square root.
---------------------------------------------------
---------------------------------------------------------Low Level Functions
---------------------------------------------------------qrdelete
Delete columns from QR factorization.
qrinsert
Insert columns into QR factorization.
----------------------------------------------------------
Data Analysis and Fourier Transform
Functions
---------------------------------------------------------------Basic Operations
---------------------------------------------------------------cumprod
Cumulative product of elements.
cumsum
Cumulative sum of elements.
max
Largest component.
mean
Average or mean value.
median
Median value.
min
Smallest component.
prod
Product of elements.
sort
Sort in ascending order.
std
Standard deviation.
sum
Sum of elements.
trapz
Numerical integration using trapezoidal method.
---------------------------------------------------------------------------------------------------------------------------------Finite Differences
------------------------------------------------------------------del2
Five-point discrete Laplacian.
diff
Difference function and approximate derivative.
gradient
Approximate gradient.
------------------------------------------------------------------------------------------------------Correlation
------------------------------------corrcoef
Correlation coefficients.
cov
Covariance matrix.
--------------------------------------------------------------------------------------------------------Filtering and Convolution
--------------------------------------------------------------------conv
Convolution and polynomial multiplication.
conv2
Two-dimensional convolution.
deconv
Deconvolution and polynomial division.
filter
One-dimensional digital filter.
filter2
Two-dimensional digital filter.
----------------------------------------------------------------------------------------------------------------------------------------Fourier Transforms
--------------------------------------------------------------------abs
Magnitude.
angle
Phase angle.
cplxpair
Sort numbers into complex conjugate pairs.
fft
Discrete Fourier transform.
fft2
Two-dimensional discrete Fourier transform.
fftshift
Move zeroth lag to center of spectrum.
ifft
Inverse discrete Fourier transform.
ifft2
Two-dimensional inverse discrete Fourier transform.
nextpow2
Next higher power of 2.
unwrap
Remove phase angle jumps across 360\xa1 boundaries.
----------------------------------------------------------------------------------------------------------Vector Functions
--------------------------------------cross
Vector cross product.
dot
Vector dot product.
---------------------------------------
Polynomial and Interpolation Functions
------------------------------------------------------Polynomials
------------------------------------------------------conv
Multiply polynomials.
deconv
Divide polynomials.
poly
Construct polynomial with specified roots.
polyder
Differentiate polynomial.
polyeig
Solve polynomial eigenvalue problem.
polyfit
Fit polynomial to data.
polyval
Evaluate polynomial.
polyvalm
Evaluate polynomial with matrix argument.
residue
Partial-fraction expansion (residues).
roots
Find polynomial roots.
--------------------------------------------------------------------------------------------------------------------------Data Interpolation
--------------------------------------------------------------------griddata
Data gridding.
interp1
One-dimensional interpolation (1-D table lookup).
interp2
Two-dimensional interpolation (2-D table lookup).
interpft
One-dimensional interpolation using FFT method.
---------------------------------------------------------------------
Function Functions
-------------------------------------------------------------------------------------------------Function Functions - Nonlinear Numerical Methods
-------------------------------------------------------------------------------------------------fmin
Minimize function of one variable.
fmins
Minimize function of several variables.
fplot
Plot function.
fzero
Find zero of function of one variable.
ode23
Solve differential equations, low order method.
ode45
Solve differential equations, high order method.
quad
Numerically evaluate integral, low order method.
quad8
Numerically evaluate integral, high order method.
--------------------------------------------------------------------------------------------------
Sparse Matrix Functions
---------------------------------------------------------------Elementary Sparse Matrices
---------------------------------------------------------------spdiags
Sparse matrix formed from diagonals.
speye
Sparse identity matrix.
sprandn
Sparse random matrix.
sprandsym
Sparse symmetric random matrix.
----------------------------------------------------------------------------------------------------------------------------------------Full to Sparse Conversion
-------------------------------------------------------------------------find
Find indices of nonzero entries.
full
Convert sparse matrix to full matrix.
sparse
Create sparse matrix from nonzeros and indices.
spconvert
Convert from sparse matrix external format.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------Working with Nonzero Entries of Sparse Matrices
-----------------------------------------------------------------------------------------------issparse
True if matrix is sparse.
nnz
Number of nonzero entries.
nonzeros
Nonzero entries.
nzmax
Amount of storage allocated for nonzero entries.
spalloc
Allocate memory for nonzero entries.
spfun
Apply function to nonzero entries.
spones
Replace nonzero entries with ones.
-----------------------------------------------------------------------------------------------------------------------------------------------------------Visualizing Sparse Matrices
------------------------------------------------------------gplot
Plot graph, as in "graph theory."
spy
Visualize sparsity structure.
-----------------------------------------------------------------------------------------------------------------------Reordering Algorithms
-----------------------------------------------------------colmmd
Column minimum degree.
colperm
Order columns based on nonzero count.
dmperm
Dulmage-Mendelsohn decomposition.
randperm
Random permutation vector.
symmmd
Symmetric minimum degree.
symrcm
Reverse Cuthill-McKee ordering.
----------------------------------------------------------------------------------------------------------------------Norm, Condition Number, and Rank
-----------------------------------------------------------condest
Estimate 1-norm condition.
normest
Estimate 2-norm.
sprank
Structural rank.
--------------------------------------------------------------------------------------------------------------------
Miscellaneous
--------------------------------------------------------spaugment
Form least squares augmented system.
spparms
Set parameters for sparse matrix routines.
symbfact
Symbolic factorization analysis.
---------------------------------------------------------
Two-Dimensional Graphics
--------------------------------------------------------------Elementary X-Y Graphs
--------------------------------------------------------------fill
Draw filled 2-D polygons.
loglog
Log-log scale plot.
plot
Linear plot.
semilogx
Semi-log scale plot, x-axis logarithmic.
semilogy
Semi-log scale plot, y-axis logarithmic.
--------------------------------------------------------------------------------------------------------------------------Specialized X-Y Graphs
------------------------------------------------------------bar
Bar graph.
comet
Animated comet plot.
compass
Compass plot.
errorbar
Error bar plot.
feather
Feather plot.
fplot
Plot function.
hist
Histogram plot.
polar
Polar coordinate plot.
rose
Angle histogram plot.
stairs
Stairstep plot.
stem
Stem plot for discrete sequence data.
-----------------------------------------------------------------------------------------------------Graph Annotation
-----------------------------------------grid
Grid lines.
gtext
Mouse placement of text.
legend
Add legend to plot.
text
Text annotation.
title
Graph title.
xlabel
X-axis label.
ylabel
Y-axis label.
-----------------------------------------------------------------------------------------------------Coordinate System Conversion
------------------------------------------------------------cart2pol
Cartesian to polar coordinates.
pol2cart
Polar to Cartesian coordinates.
-------------------------------------------------------------------------------------------------------------------Miscellaneous
--------------------------------------------------------zoom
Zoom in and out of a two-dimensional plot.
---------------------------------------------------------
Three-Dimensional Graphics
-------------------------------------------------------------------------------Line and Area Fill Commands
-------------------------------------------------------------------------------fill3
Draw filled three-dimensional polygons in 3-D space.
plot3
Plot lines and points in three-dimensional space.
-----------------------------------------------------------------------------------------------------------------------------------------------------------------Contour and Other 2-D Plots of 3-D Data
----------------------------------------------------------------------------------clabel
Contour plot elevation labels.
comet3
Three-dimensional animated comet plot.
contour
Contour plot.
contour3
Three-dimensional contour plot.
contourc
Contour plot computation (used by contour).
image
Display image.
imagesc
Scale data and display as image.
pcolor
Pseudocolor (checkerboard) plot.
quiver
Quiver plot.
slice
Volumetric slice plot.
------------------------------------------------------------------------------------------------------------------------------------------------------Surface and Mesh Plots
--------------------------------------------------------------------mesh
Three-dimensional mesh surface.
meshc
Combination mesh/contour plot.
meshz
Three-dimensional mesh with zero plane.
slice
Volumetric visualization plot.
surf
Three-dimensional shaded surface.
surfc
Combination surf/contour plot.
surfl
Three-dimensional shaded surface with lighting.
waterfall
Waterfall plot.
-------------------------------------------------------------------------------------------------------------------------------------Graph Appearance
-----------------------------------------------------------------axis
Axis scaling and appearance.
caxis
Pseudocolor axis scaling.
colormap
Color lookup table.
hidden
Mesh hidden line removal mode.
shading
Color shading mode.
view
Three-dimensional graph viewpoint specification.
viewmtx
View transformation matrices.
--------------------------------------------------------------------------------------------------------------------------Graph Annotation
---------------------------------------------------------grid
Grid lines.
legend
Add legend to plot.
text
Text annotation.
title
Graph title.
xlabel
X-axis label.
ylabel
Y-axis label.
zlabel
Z-axis label for three-dimensional plots.
---------------------------------------------------------------------------------------3-D Objects
------------------------------cylinder
Generate cylinder.
sphere
Generate sphere.
------------------------------------------------------------------------------------------Coordinate System Conversion
------------------------------------------------------------cart2sph
Cartesian to polar coordinates.
sph2cart
Polar to Cartesian coordinates.
-------------------------------------------------------------
Graphics Functions
--------------------------------------------------------------------------------------Figure Window Creation and Control
--------------------------------------------------------------------------------------capture
Screen capture of current figure (UNIX only).
clf
Clear current figure.
close
Close figure.
figure
Create Figure (graph window).
gcf
Get handle to current figure.
graymon
Set default figure properties for grayscale monitors.
newplot
Determine correct axes and figure for new graph.
refresh
Redraw current figure window.
whitebg
Toggle figure background color.
----------------------------------------------------------------------------------------------------------------------------------------------------Axis Creation and Control
--------------------------------------------------------------axes
Create axes in arbitrary positions.
axis
Control axis scaling and appearance.
caxis
Control pseudocolor axis scaling.
cla
Clear current axes.
gca
Get handle to current axes.
hold
Hold current graph.
ishold
True if hold is on.
subplot
Create axes in tiled positions.
--------------------------------------------------------------------------------------------------------------------Handle Graphics Objects
------------------------------------------------------axes
Create axes.
figure
Create figure window.
image
Create image.
line
Create line.
patch
Create patch.
surface
Create surface.
text
Create text.
uicontrol Create user interface control.
uimenu
Create user interface menu.
------------------------------------------------------------------------------------------------------------------------
Handle Graphics Operations
-----------------------------------------------------------------delete
Delete object.
drawnow
Flush pending graphics events.
findobj
Find object with specified properties.
gco
Get handle of current object.
get
Get object properties.
reset
Reset object properties.
rotate
Rotate an object.
set
Set object properties.
--------------------------------------------------------------------------------------------------------------------------------Dialog Boxes
---------------------------------------------------------------uigetfile Retrieve name of file to open through dialog box.
uiputfile Retrieve name of file to write through dialog box.
---------------------------------------------------------------------------------------------------------------------Hardcopy and Storage
------------------------------------------------------orient
Set paper orientation.
print
Print graph or save graph to file.
printopt
Configure local printer defaults.
---------------------------------------------------------------------------------------------------------Movies and Animation
---------------------------------------------------getframe
Get movie frame.
movie
Play recorded movie frames.
moviein
Initialize movie frame memory.
------------------------------------------------------------------------------------------------------------Miscellaneous
---------------------------------------------------------ginput
Graphical input from mouse.
ishold
Return hold state.
rbbox
Rubberband box for region selection.
waitforbuttonpress Wait for key/button press over figure.
----------------------------------------------------------
Color Control and Lighting Model
Functions
-----------------------------------------Color Controls
-----------------------------------------caxis
Pseudocolor axis scaling.
colormap
Color lookup table.
shading
Color shading mode.
----------------------------------------------------------------------------------------------------Colormaps
-----------------------------------------------------------bone
Gray-scale with a tinge of blue colormap.
contrast
Contrast-enhancing grayscale colormap.
cool
Shades of cyan and magenta colormap.
copper
Linear copper-tone colormap.
flag
Alternating red, white, blue, and black colormap.
gray
Linear grayscale colormap.
hsv
Hue-saturation-value colormap.
hot
Black-red-yellow-white colormap.
jet
Variation of HSV colormap (no wrap).
pink
Pastel shades of pink colormap.
prism
Prism colors colormap.
white
All white monochrome colormap.
----------------------------------------------------------------------------------------------------------------------------------------Color Map Related Functions
-----------------------------------------------------------------------------brighten
Brighten or darken color map.
colorbar
Display colormap as color scale.
hsv2rgb
Hue-saturation-value to red-green-blue conversion.
rgb2hsv
Red-green-blue to hue-saturation-value conversion.
rgbplot
Plot color map.
spinmap
Spin color map.
--------------------------------------------------------------------------------------------------------------------------------------------Lighting Models
---------------------------------------------------------------diffuse
Diffuse reflectance.
specular
Specular reflectance.
surfl
Three-dimensional shaded surface with lighting.
surfnorm
Surface normals.
----------------------------------------------------------------
Sound Processing Functions
---------------------------------------------------General Sound Functions
---------------------------------------------------saxis
Sound axis scaling.
sound
Convert vector into sound.
---------------------------------------------------------------------------------------------------------------------SPARCstation-specific Sound Functions
------------------------------------------------------------------auread
Read Sun audio file.
auwrite
Write Sun audio file.
lin2mu
Linear to mu-law conversion.
mu2lin
Mu-law to linear conversion.
---------------------------------------------------------------------------------------------------------------------------------.WAV Sound Functions
---------------------------------------------------------------wavread
Load MS-Windows 3.1 .WAV format sound file.
wavwrite
Save MS-Windows 3.1 .WAV format sound file.
----------------------------------------------------------------
Character String Functions
-----------------------------------------------------------General
-----------------------------------------------------------abs
Convert string to numeric values.
blanks
Create string of blanks.
deblank Remove trailing blanks and null spaces from string.
eval
Execute string with MATLAB expression.
findstr Find one string within another.
isstr
True for string.
setstr
Convert numeric values to string.
str2mat Form text matrix from individual strings.
string
About character strings in MATLAB.
strrep
String search and replace.
strtok
First token in string.
-----------------------------------------------------------------------------------------------------------String Comparison
------------------------------------------------isletter True for alphabetic character.
lower
Convert string to lower case.
strcmp
Compare strings.
upper
Convert string to upper case.
--------------------------------------------------------------------------------------------------------------------------String to Number Conversion
--------------------------------------------------------------------------int2str
Convert integer to string.
num2str
Convert number to string.
sprintf
Convert number to string under format control.
sscanf
Convert string to number under format control.
str2num
Convert string to number.
----------------------------------------------------------------------------------------------------------------------------------------------------------Hexadecimal to Number Conversion
--------------------------------------------------------------------------------dec2hex
Convert decimal integer to hex string.
hex2dec
Convert hex string to decimal integer.
hex2num
Convert hex string to IEEE floating-point number.
---------------------------------------------------------------------------------
Low-level File I/O Functions
------------------------------------File Opening and Closing
------------------------------------fclose
Close file.
fopen
Open file.
------------------------------------------------------------------------------Unformatted I/O
------------------------------------------fread
Read binary data from file.
fwrite
Write binary data to file.
-------------------------------------------------------------------------------------------------------
Formatted I/O
------------------------------------------------------------fgetl
Read line from file, discard newline character.
fgets
Read line from file, keep newline character.
fprintf
Write formatted data to file.
fscanf
Read formatted data from file.
-----------------------------------------------------------------------------------------------------------File Positioning
-----------------------------------------------feof
Test for end-of-file.
ferror
Inquire file I/O error status.
frewind
Rewind file.
fseek
Set file position indicator.
ftell
Get file position indicator.
--------------------------------------------------------------------------------------------------String Conversion
---------------------------------------------------sprintf
Write formatted data to string.
sscanf
Read string under format control.
-------------------------------------------------------------------------------------------------------------------------Specialized File I/O
----------------------------------------------------------------------csvread
Read a file of comma separated values.
csvwrite
Write a file of comma separated values.
uigetfile Retrieve name of file to open through dialog box.
uiputfile Retrieve name of file to write through dialog box.
wk1read
Read a Lotus123 WK1 spreadsheet file.
wk1write
Write a Lotus123 WK1 spreadsheet file.
-----------------------------------------------------------------------
External Interface Library
-------------------------------------Matrix Access Routines
-------------------------------------mxCreateFull
Allocate Matrices
mxCreateSparse
Allocate Matrices
mxCreateString
Create string from Matrix.
mxFreeMatrix
Free Matrices
mxGetIr
Get sparse ir arrays.
mxGetJc
Get sparse jc arrays.
mxGetM
Get the row dimension of a Matrix.
mxGetN
Get column dimension of a Matrix.
mxGetName
Get the name of a Matrix.
mxGetNzmax
Get the maximum number of sparse nonzero entries.
mxGetPi
Get pointers to the real and imaginary parts of a
Matrix.
mxGetPr
Get pointers to the real and imaginary parts of a
Matrix.
mxGetScalar
Get the (1,1) element of a Matrix.
mxGetString
Create string from Matrix and get string Matrix.
mxIsComplex
Inquire whether a Matrix is complex.
mxIsDouble
Inquire if the Matrix is of type double.
mxIsFull
Inquire sparsity of a Matrix.
mxIsNumeric
Inquire if Matrix contains numeric or string data.
mxIsSparse
Inquire sparsity of a Matrix.
mxIsString
Inquire if Matrix contains numeric or string data.
mxSetIr
Set the sparse ir array.
mxSetJc
Set the sparse jc array.
mxSetM
Set the row dimension of a Matrix.
mxSetN
Set the column dimensions of a Matrix.
mxSetName
Set the name of a Matrix.
mxSetNzmax
Set the maximum number of sparse nonzero entries.
mxSetPi
Set pointers to the real and imaginary parts of a
Matrix.
mxSetPr
Set pointers to the real and imaginary parts of a
Matrix.
---------------------------------------------------------------------Memory Allocation Routines
--------------------------------mxCalloc
Allocate memory using MATLAB's memory manager.
mxFree
Free memory using MATLAB's memory manager.
------------------------------------------------------------------Fortran and C Conversion Routines
----------------------------------mxCopyCharacterToPtr Copy CHARACTER values between Fortran and
pointer arrays.
mxCopyComplex16ToPtr Copy COMPLEX*16 values between Fotran and
pointer arrays.
mxCopyInteger4ToPtr Copy INTEGER*4 values between Fotran and pointer
arrays.
mxCopyPtrToCharacter Copy CHARACTER values between Fotran and pointer
arrays.
mxCopyPtrToComplex16 Copy COMPLEX*16 values between Fortran and
pointer arrays.
mxCopyPtrToInteger4 Copy INTEGER*4 values between Fortran and
pointer arrays.
mxCopyPtrToReal8
Copy REAL*8 values between Fortran and pointer
arrays.
mxCopyReal8ToPtr
Copy REAL*8 values between Fortran and pointer
arrays.
-----------------------------------------------------------------MEX-File Routines
-------------------------------mexAtExit
Register a function to be called on shutdown.
mexCallMATLAB
Call internal MATLAB functions.
mexErrMsgTxt
Issue error message and return to MATLAB.
mexEvalString
Execute statement in string.
mexFunction
Entry point to a MEX-file.
mexGetFull
Easier way to get full Matrices into a workspace.
mexGetMatrix
Get Matrices into a MEX-file's caller's workspace.
mexGetMatrixPtr
Get the pointer to a Matrix in the caller's
workspace.
mexPrintf
Buffered printf routine.
mexPutFull
Easier way to put full Matrices into a workspace.
mexPutMatrix
Put Matrices into a MEX-file's caller's workspace.
mexSetTrapFlag
Control response of mexCallMATLAB to errors.
-------------------------------------------------------------MAT-File Routines
-------------------------------
matClose
Closes MAT-files.
matDeleteMatrix
Delete named Matrix from MAT-file.
matGetDir
Get directory of Matrices in a MAT-file.
matGetFp
Get file pointer to a MAT-file.
matGetFull
Easiest way to get full Matrices into MAT-files.
matGetMatrix
Get Matrices into MAT-files.
matGetNextMatrix
Get next Matrix from MAT-file
matGetString
Get string Matrices into MAT-files.
matOpen
Open MAT-files.
matPutFull
Easiest way to put full Matrices into MAT-files.
matPutMatrix
Put Matrices into MAT-files.
matPutString
Put string Matrices into MAT-files.
------------------------------------------------------------Engine Routines
------------------------------engClose
Kill a MATLAB engine.
engEvalString
Execute statement in string.
engGetFull
Easier way to get full Matrices into an engine.
engGetMatrix
Get Matrices into a MATLAB engine's workspace.
engOpen
Start a MATLAB engine.
engOutputBuffer
Define output buffer.
engPutFull
Easier way to put full Matrices into an engine.
engPutMatrix
Put Matrices into a MATLAB engine's workspace.
engSetEvalCallback Enable nonblocking engEvalString calls.
engSetEvalTimeout
Set timeout duration for engine routines.
engWinInit
Initialize the engine library with the
instance handle of your Windows program.
-------------------------------------------------------------------DDE Routines (Windows Platform Only)
-------------------------------------ddeadv
Set up advisory link between MATLAB and DDE server
application.
ddeexec
Send execution string to DDE server application.
ddeinit
Initiate DDE conversation between MATLAB and another
application.
ddepoke
Send data from MATLAB to DDE server application.
ddereq
Request data from DDE server application.
ddeterm
Terminate DDE conversation between MATLAB and server
application.
ddeunadv
Release an advisory link between MATLAB and DDE server
application.
-----------------------------
The MATLAB Expo and other demonstrations.
MATLAB/Introduction.
expo, demo
- Start up The MATLAB Expo and display splash screen.
expomap
- Open the MATLAB Expo Main Map (avoids Expo splash
screen).
MATLAB/Matrices.
intro
- Introduction to MATLAB.
inverter
- Demonstrate the inversion of a matrix.
buckydem
- Connectivity graph of the Buckminster Fuller
geodesic dome.
sparsity
- Demonstrate effect of sparsity orderings.
matmanip
- Introduction to matrix manipulation.
delsqdemo
- Finite difference Laplacian on various domains.
sepdemo
- Separators for a finite element mesh.
airfoil
- Display sparse matrix from NASA airfoil.
MATLAB/Numerics.
funfuns
- Demonstrate functions that operate on other
functions.
fitdemo
- Nonlinear curve fit with simplex algorithm.
sunspots
- The answer is 11.08, what is the question?
e2pi
- Which is greater, e^pi or pi^e?
bench
- MATLAB Benchmark.
odedemo
- Ordinary differential equations.
quaddemo
- Adaptive quadrature.
zerodemo
- Zerofinding with fzero.
fplotdemo
- Plot a function.
eigmovie
- Symmetric eigenvalue movie.
rrefmovie
- Computation of Reduced Row Echelon Form.
fftdemo
- Use of the fast finite Fourier transform.
quake
- Loma Prieta Earthquake.
census
- Try to predict the US population in the year 2000.
spline2d
- Demonstrate GINPUT and SPLINE in two dimensions.
MATLAB/Visualization.
graf2d
- Demonstrate XY plots in MATLAB.
graf2d2
- Demonstrate XYZ plots in MATLAB.
grafcplx
- Demonstrate complex function plots in MATLAB.
lorenz
- Plot the orbit around the Lorenz chaotic attractor.
xpsound
- Demonstrate MATLAB V4's sound capability.
vibes
- Vibrating L-shaped membrane.
xpklein
- Klein bottle demo.
fourier
- Graphics demo of Fourier series expansion.
cplxdemo
- Maps of functions of a complex variable.
peaks
- A sample function of two variables.
membrane
- Generate MathWorks's logo.
penny
- Several views of the penny data.
earthmap
- View Earth's topography.
sqdemo
- Superquadrics using UIControls.
imagedemo
- Demonstrate MATLAB V4's image capability.
colormenu
- Select color map.
MATLAB/Language.
xplang
- Introduction to the MATLAB language.
graf3d
- Demonstrate Handle Graphics for surface plots.
hndlgraf
- Demonstrate Handle Graphics for line plots.
hndlaxis
- Demonstrate Handle Graphics for axes.
SIMULINK/Simple Systems.
simintro
- A quick introduction to SIMULINK.
libintro
- A
quick introduction to the SIMULINK Libraries.
simppend
- SIMULINK system modeling a simple pendulum.
onecart
- SIMULINK system modeling a mass-spring system.
bounce
- SIMULINK system modeling a bouncing ball.
vdp
- SIMULINK system modeling the Van der Pol equations.
SIMULINK/Complex Systems.
dblcart1
- SIMULINK system
dblpend1
- SIMULINK system
dblpend2
- SIMULINK system
penddemo
- SIMULINK system
dblcart
- SIMULINK system
thermo
- SIMULINK system
house.
f14
- SIMULINK system
SIMULINK/Advanced Products.
modeling
modeling
modeling
modeling
modeling
modeling
a mass-spring system.
a double-pendulum system.
a double-pendulum system.
an inverted pendulum.
a double-cart system.
a thermostat heating a
modeling an aircraft in flight.
xpaccel
ccodegen
- Provide information about the SIMULINK Accelerator.
- Provide information about the C-Code Generator.
Toolbox/Signal Processing.
filtdem
- Signal Processing filter demo.
filtdem2
- Demonstrate filter design techniques.
sigdemo1
- Discrete-time Fourier transform of a signal.
sigdemo2
- Continuous-time Fourier transform of a signal.
phone
- Signal processing and the touch-tone phone.
Toolbox/System Identification.
sysiddm
- Identify "hairdryer" system characteristics.
iddems
- Set up System Identification command line demos.
Toolbox/Optimization.
bandem
- Banana function minimization demonstration.
optdems
- Set up Optimization command line demos.
Toolbox/Neural Networks.
bckprp12
- Demonstrate backpropagation.
bckprp62
- Demonstrate backpropagation with momentum.
neural
- Neural network character recognition.
Toolbox/Control System.
dskdemo
- Build controller for a disk read/write head.
ctrldems
- Set up Control System command line demos.
Toolbox/Robust Control.
accdm2
- Demo of the 1990 ACC benchmark.
rctdems
- Set up Robust Control command line demos.
Toolbox/Mu-Analysis and Synthesis.
xpmu
- Description of the Mu-Analysis and Synthesis
process.
mudems
- Set up Mu-Analysis and Synthesis command line demos.
Toolbox/Spline.
spapidm2
- Demonstrate spline interpolation.
spldems
- Set up Spline command line demos.
Toolbox/Symbolic Math.
xpcalc
- Calculus operations.
xpgiv
- Givens transformation.
Toolbox/Image Processing.
xpimage
- Demonstrate some Image Processing capabilities.
Toolbox/Statistics.
xppolytl
- Interactively fit a polynomial to noisy data.
statdems
- Set up Statistics command line demos.
Extras/Gallery.
knot
quivdemo
modes
logo
klein1
cruller
tori4
spharm2
-
Tube surrounding a three-dimensional knot.
Demonstrate the quiver function.
Plot 12 modes of the L-shaped membrane.
Display the MATLAB L-shaped membrane logo.
Construct a Klein bottle.
Construct cruller.
Construct four linked tori.
Construct spherical surface harmonic.
Extras/Games.
xpbombs
- Minesweeper game.
life
- Conway's Game of Life.
bblwrap
- Bubblewrap.
Extras/Miscellaneous.
truss
- Animation of a bending bridge truss.
travel
- Traveling salesman problem.
wrldtrv
- Great circle flight routes around the globe.
makevase
- Generate and plot a surface of revolution.
logospin
- Movie of The MathWorks' logo spinning.
crulspin
- Spinning cruller movie.
xpquad
- Superquadrics plotting demonstration.
spinner
- Colorful lines spinning through space.
Extras/Contact Info.
contact1
- How to reach The MathWorks, Inc.
contact2
- How to reach The MathWorks, Inc. by email.
contact3
- How to reach international agents for The MathWorks,
Inc.
agents
- International distributors' locations and contact
information.
General Expo/Helper functions.
expomenu
- Initializes Expo menubar.
cmdlnwin
- An Expo gateway routine for playing command line
demos.
existtb
- Tests for the availability of individual toolboxes
by name.
helpfun
- Utility function for displaying help text
conveniently.
hlpmaker
- An Expo help-making utility.
pltmat
- Display a matrix in a figure window.
MATLAB/Helper functions.
bucky
- The graph of the Buckminster Fuller geodesic dome.
SIMULINK/Helper
animinit
crtanim1
system.
crtanim2
system.
simcad
-
functions.
Initializes a figure for SIMULINK animations.
S-function for animating the motion of a mass-spring
S-function for animating the motion of a mass-spring
The SIMULINK system caddy.