Getting Started

Demonstration Programs Included with MATLAB

MATLAB includes many demonstration programs that highlight various features and functions. For a complete list of the demos, at the command prompt type

help demos

To view a specific file, for example, airfoil, type

edit airfoil

To run a demonstration, type the filename at the command prompt. For example, to run the airfoil demonstration, type

airfoil

The following tables list some of the current demonstration programs that are available, organized into these categories:

• Matrix demos
• Numeric demos
• Visualization demos
• Language demos
• ODE suite demos
• Gallery demos
• Game demos
• Miscellaneous demos
• Helper function demos

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MATLAB Matrix Demonstration Programs  

airfoil	Graphical demonstration of sparse matrix from NASA airfoil.
buckydem	Connectivity graph of the Buckminster Fuller geodesic dome.
delsqdemo	Finite difference Laplacian on various domains.
eigmovie	Symmetric eigenvalue movie.
eigshow	Graphical demonstration of matrix eigenvalues.
intro	Introduction to basic matrix operations in MATLAB.
inverter	Demonstration of the inversion of a large matrix.
matmanip	Introduction to matrix manipulation.
rrefmovie	Computation of reduced row echelon form.
sepdemo	Separators for a finite element mesh.
sparsity	Demonstration of the effect of sparsity orderings.
svdshow	Graphical demonstration of matrix singular values.

MATLAB Numeric Demonstration Programs  

bench	MATLAB benchmark.
census	Prediction of the U.S. population in the year 2000.
e2pi	Two-dimensional, visual solution to the problem "Which is greater, e or e?"
fftdemo	Use of the FFT function for spectral analysis.
fitdemo	Nonlinear curve fit with simplex algorithm.
fplotdemo	Demonstration of plotting a function.
funfuns	Demonstration of functions operating on other functions.
lotkademo	Example of ordinary differential equation solution.
quaddemo	Adaptive quadrature.
quake	Loma Prieta earthquake.
spline2d	Demonstration of ginput and spline in two dimensions.
sunspots	Demonstration of the fast Fourier transform (FFT) function in MATLAB used to analyze the variations in sunspot activity.
zerodemo	Zero finding with fzero.

MATLAB Visualization Demonstration Programs  

colormenu	Demonstration of adding a colormap to the current figure.
cplxdemo	Maps of functions of a complex variable.
earthmap	Graphical demonstrations of earth's topography.
graf2d	Two-dimensional XY plots in MATLAB.
graf2d2	Three-dimensional XYZ plots in MATLAB.
grafcplx	Demonstration of complex function plots in MATLAB.
imagedemo	Demonstration of MATLAB's image capability.
imageext	Demonstration of changing and rotating image colormaps.
lorenz	Graphical demonstration of the orbit around the Lorenz chaotic attractor.
penny	Several views of the penny data.
vibes	Vibrating L-shaped membrane movie.
xfourier	Graphical demonstration of Fourier series expansion.
xpklein	Klein bottle demo.
xpsound	Demonstration of MATLAB's sound capability.

MATLAB Language Demonstration Programs  

graf3d	Demonstration of Handle Graphics for surface plots.
hndlaxis	Demonstration of Handle Graphics for axes.
hndlgraf	Demonstration of Handle Graphics for line plots.
xplang	Introduction to the MATLAB language.

MATLAB ODE Suite Demonstration Programs  

a2ode	Stiff problem, linear with real eigenvalues.
a3ode	Stiff problem, linear with real eigenvalues.
b5ode	Stiff problem, linear with complex eigenvalues.
ballode	Equations of motion for a bouncing ball used by BALLDEMO.
besslode	Bessel's equation of order 0 used by BESSLDEMO.
brussode	Stiff problem, modelling a chemical reaction (Brusselator).
buiode	Stiff problem, analytical solution due to Bui.
chm6ode	Stiff problem CHM6 from Enright and Hull.
chm7ode	Stiff problem CHM7 from Enright and Hull.
chm9ode	Stiff problem CHM9 from Enright and Hull.
d1ode	Stiff problem, nonlinear with real eigenvalues.
fem1ode	Stiff problem with a time-dependent mass matrix.
fem2ode	Stiff problem with a time-independent mass matrix.
gearode	Stiff problem due to Gear as quoted by van der Houwen.
hb1ode	Stiff problem 1 of Hindmarsh and Byrne.
hb2ode	Stiff problem 2 of Hindmarsh and Byrne.
hb3ode	Stiff problem 3 of Hindmarsh and Byrne.
odedemo	Demonstration of the ODE suite integrators.
orbitode	Restricted 3 body problem used by ORBITDEMO.
orbt2ode	Nonstiff problem D5 of Hull et al.
rigidode	Euler equations of a rigid body without external forces.
sticode	Spring-driven mass stuck to surface, used by STICDEMO.
vdpode	Parameterizable van der Pol equation (stiff for large µ).

MATLAB Gallery Demonstration Programs  

cruller	Graphical demonstration of a cruller.
klein1	Graphical demonstration of a Klein bottle.
knot	Tube surrounding a three-dimensional knot.
logo	Graphical demonstration of the MATLAB L-shaped membrane logo.
modes	Graphical demonstration of 12 modes of the L-shaped membrane.
quivdemo	Graphical demonstration of the quiver function.
spharm2	Graphical demonstration of spherical surface harmonic.
tori4	Graphical demonstration of four-linked, unknotted tori.
finddemo	Command that finds available demos for individual toolboxes.
helpfun	Utility function for displaying help text conveniently.
membrane	The MathWorks logo.
peaks	Sample function of two variables.
pltmat	Command that displays a matrix in a figure window.

MATLAB Game Demonstration Programs  

bblwrap	Bubblewrap.
life	Conway's Game of Life.
soma	Soma cube.
xpbombs	Minesweeper game.

MATLAB Miscellaneous Demonstration Programs  

codec	Alphabet transposition coder/decoder.
crulspin	Spinning cruller movie.
logospin	Movie of the MathWorks logo spinning.
makevase	Demonstration of a surface of revolution.
quatdemo	Quaternion rotation.
spinner	Colorful lines spinning through space.
travel	Traveling salesman problem.
truss	Animation of a bending bridge truss.
wrldtrv	Great circle flight routes around the globe.
xphide	Visual perception of objects in motion.
xpquad	Superquadrics plotting demonstration.

MATLAB Helper Functions Demonstration Programs  

bucky	Graph of the Buckminster Fuller geodesic dome.
cmdlnbgn	Set up for command line demos.
cmdlnend	Clean up after command line demos.
cmdlnwin	Demo gateway routine for running command line demos.
finddemo	Command that finds available demos for individual toolboxes.
helpfun	Utility function for displaying help text conveniently.
membrane	The MathWorks logo.
peaks	Sample function of two variables.
pltmat	Command that displays a matrix in a figure window.

Getting More Information

The MathWorks Web site (www.mathworks.com) contains numerous M-files that have been written by users and MathWorks staff. These are accessible by selecting Downloads. Also, Technical Notes, which is accessible from our Technical Support Web site (www.mathworks.com/support), contains numerous examples on graphics, mathematics, API, Simulink, and others.

Function Functions