CSC115: Matlab Special Session Dr. Zhen Jiang Computer Science Department West Chester University

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

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

Or the direct access from the icon “blank”

Input / Output Parameter input Page 33

Xls input (the easiest one) ◦ Sample xls input file Sample xls input file Page 250 Also available at sk/help/techdoc/ref/xlsread.html sk/help/techdoc/ref/xlsread.html

Something must know Page 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 InF Max Min Size

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 Sample plain text file Help fileformats, page 253 Tip: Try to avoid using low level file I/O