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Software Interest Group
The UA Math Department Software Interest Group (SWIG)
is a self-organized informal group, consisting of faculty members,
visitors, staff, and graduate students, whose goal is to promote and
advance computer and software literacy among the members of the department
through meetings, talks, and discussions.
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For more details, and talks in past semesters, consult the full schedule of talks.
Past topics can (and should) be repeated occasionally. In addition, here are some topics people might like to hear about:
To give a talk, please contact swig@math.arizona.edu.
matlab
and you will get the matlab prompt ">>".
At the prompt you can type in matlab commands interactively,
or load in script files.
A script file (naming convention: name.m) contains the matlab commands just as you would type them in interactively. Scripts are very useful if you are using the same sequence of commands over and over again and don't want to type in all the commands each time. To load in a script file, say goof.m, at the matlab prompt type
>> goof
and matlab will execute the commands in goof.m.
>> help
for the text version or
>> helpwin
for the graphics/separate window version.
>> lookfor blihblih
where blihblih is the subject of interest, and
lookfor will return a list of the commands
that are related to blihblih.
>> helpdesk
which pops up a Netscape web browser with the HelpDesk page (if you already happen to be running Netscape your browser will be redirected to the HelpDesk page). It contains links to Matlab documentation and a search index.
>> demo
and a separate window will pop up, with menu-driven options.
Below are some matlab scripts and sample commands:
who tells you what variables exist.
whos gives detailed information about existing
variables.
clear will clear all variables and functions
from memory.
save command can save all your workspace
variables (or a select few) in a binary format (*.mat files).
For example, to save the variables A and B to a
MAT-file called goof.mat, at the matlab prompt type
>> save goof.mat A B
To load the all contents of goof.mat back into a matlab session, simply type
>> load goof.mat
(to load only specific variables just add the variable names to the end of the command above).
diary command. For
example, to save all subsequent commands typed to a file
called goof.diary, at the matlab prompt type
>> diary('goof.diary')
and matlab will faithfully save everything until you type
diary off or you exit matlab.
>> print -dps filename.ps
To print it, at the Unix prompt type lpr
filename.ps
clc clears the command window.
clf clears the current figure window.
what lists all the matlab-related files in
your directory.
which locates functions and files.
why answer all questions.
matlab < name.m > name.out &
>> colormenu
>> colorbar
/usr/local/Matlab/toolbox/matlab/demos
