CSC115: Matlab Special SessionDr. Zhen JiangComputer Science DepartmentWest Chester University

Class informationTextbook

◦Hanselman & Littlefield, “Mastering Matlab 7”, Prentice Hall, Upper Saddle River, NJ, 2005.

Example on Page 6◦Variable◦Keyword (reserved word)◦;◦Calculation◦% (comment)◦,◦error

<File> <new>Or the direct access from the

icon “blank”

Input / OutputParameter input Page 33

Xls input (the easiest one)◦Sample xls input file

Page 250Also available at

http://www.mathworks.com/access/helpdesk/help/techdoc/ref/xlsread.html

Something must knowPage 39

◦How to use the readout n?

Apply an operation on every unit in the array

Page 47` (especially useful to handle

different input format, see the discussion later)

Standard arrays, page 54◦Ones, zeros, size, eye, rand, randn,

diag◦Repmat(pi, 3, 4)

Array sorting, search, page 73

Find(a>4, 2, ‘first’)◦Page 189, such as a filter to discard

NaN or InFMaxMinSize

Manipulation * , page 82 (optional)

Multidimensional array◦1-d => 2-d => 3-d, page 98◦3-d => 2-d => 1-d, page 99◦Reshape(page 57), cat(page 101),

flipdim, shiftdim, permute◦Their search and sorting, such as a

3d array sorted in one dimension.

[p, q]◦[ p q ]◦Or cat (2, p, q)

[p; q]◦Or cat (1, p, q)

Output◦Standard output◦Disp(), page 162◦Sprintf, page 168◦Plot, page 276

Other inputs◦Sample plain text file

Help fileformats, page 253Tip: Try to avoid using low level

file I/O