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MATLAB = MATrix LABoratory
How do I access MATLAB? Two options (plus one):
Why are we learning this?
I don't like learning this way, what can I do? Here are other resources for learning MATLAB:
OK, let's do this.
Hello World Task 1: Head over to http://octave-online.net/ and in the Command Prompt run the command:
Saved Script Task 2: If you register using gmail (your udel account) then you can
save a script. In MATLAB scripts are saved as
*.m files. So save a file names
which displays your name.
In my opinion, the number one indicator of your success is the extent to which you demonstrate self-determinism. As young coders this means that you must always begin a new language by learning how to access documentation.
We get help with MATLAB (and Octet) by using
help * and
Get Help Task 3: Type
help disp. Then type
Based on your findings what is another function which displays output to the screen?
The Internet is our friend Task 4: Use the internet to figure out how to "roll a die" in MATLAB (that is generate a uniform random integer from 1 to 6 inclusive).
Tab completion also works!
Here is a comparison of Python and MATLAB (matlab-python-cheatsheet.pdf borrowed from Andy Roosen, thanks):
Attempt Task 5: Use MATLAB (Octave) to tell me the terms in the sequence that starts at 3 ends at 30 and takes steps of size 7.
Translator Challenge Task 6: Write a program that rolls a die 100 times and
displays the number of times each number was rolled. Hint: work with the tools you have and
1 works the same way it did in Python.
If you've never dealt with matrices before you can think of them as "lists containing fixed-length lists". The term vector is used for a single row or a single column (called a row vector or column vector, respectively).
In MATLAB everything is a matrix, so to use it well you have to think that way.
One of the most important things to understand is the indexing:
Play Task 7: Try the following operation:
a = 1:10. Now run
= a + 10. Now
c = a + b. Now execute
a * c' and
a' * c. What
do you think happened?
Predict Task 8: Now predict what will happen when you perform
Mind Blowing Task 9: Now execute
surf(a' * c).
Super Mind Blown Task 10: Now execute
surf(sin(a)' * cos(c))!
Play Task 11: Now try
Infer Task 11: Try to make a nice sine wave plot.
Let's chat about all that happened there.
Figure out how to plot the bell curve (a normal distribution), and make a nice plot for me.