Introduction to Literate Programming in Matlab 2WN50 – Week programming-in-matlab.pptx?dl=0

2 Assignment: implement Regula Falsi Explore the following problem (i.e. graphs, tables) and implement it in Matlab

3 Matlab: command window

4 Command window

5 Matlab: command window Command window Files in current folder Variables that are currently defined

6 Matlab basics: the command window

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10 Matlab basics: arrays

11 Matlab basics: arrays

12 Matlab basics: arrays

13 Matlab basics: arrays

14 Matlab basics: arrays

15 Matlab basics: arrays

16 Matlab basics: arrays++

17 Matlab basics: arrays++

18 Matlab basics: arrays++ Operations on arrays are much faster than for- loops!

19 Matlab basics: arrays++

20 Matlab basics: arrays++

21 Assignment: implement Regula Falsi Explore the following problem (i.e. graphs, tables) and implement it in Matlab Exercise 1: Plot this function with 65 points on the given interval.

22 Matlab basics: arrays++

23 Matlab basics: functions

24 Matlab: command window Command window Files in current folder Variables that are currently defined Editor

25 Matlab: command window Command window Files in current folder Variables that are currently defined Editor ➊ ➋

26 Matlab basics: functions

27 Matlab basics: functions

28 Matlab basics: functions

29 Matlab basics: functions

Function can be Made as external m-file o Document/comment in-between steps o Function can have ‘side-effects’ (e.g. make a plot) o Suitable for functions that do “complex” operations  Check arguments  Need to use if/for etc Define inline o Short notation o Refer to coefficients in the current scope o Suitable for functions in mathematical sense.  Direct mapping of output to input 30 Matlab basics: functions

31 Matlab basics: exercise 2

32 Matlab basics: programming

33 Matlab basics: programming

34 Matlab basics: programming

35 Matlab basics: programming

36 Matlab basics: programming

CELL based editing o Collect commands rather than type them in command window o Adjust order, adjust form  E.g. plots you want to change title, labels, add elements iteratively o Execute small pieces of code rather than whole file o Code is publishable to a readable format 37 Matlab basics: programming

38 Matlab basics: literate programming

39 Matlab basics: literate programming

40 Matlab basics: literate programming PUBLISH publishing.html#btj5jsh-1

41 Matlab basics: programming

42 Assignment: implement Regula Falsi Explore the following problem (i.e. graphs, tables) and implement it in Matlab Exercise 3: Implement REGULA FALSI in a cell based script. Write introduction with problem statement in LaTeX.

43 Assignment: implement Regula Falsi (alt.) Explore the following problem (i.e. graphs, tables) and implement it in Matlab BONUS: Why is this formulation better?

44 Sample implementation

Refer to an m-file as function object e.g. Arguments are passed as copies, so changing the value of arguments inside a function does not change it outside of the function. Include m-files in published document with % myfunc.m 45 Addenda

Short Matlab introduction – Language basics – Programming concepts – Literate programming The assignments (2WN52) are to be implemented and handed in as a document published with Matlab. 46 Summary