1. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. User Controlled Input and Output Chapter 7

2. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. In this chapter we’ll learn how to… Prompt the user to enter information into an M-file program Create output using the disp function Create formatted output Use graphical techniques to provide program input Use cell mode

3. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Section 7.1 User Defined Input To this point we have “hard coded” the values of variables into our M-file programs The input function allows us to prompt the user to enter a value

4. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. The input function is used in an M-file program to prompt the user to enter a value The prompt is displayed in the command window

5. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458.

6. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Input accepts a variety of data Scalars Matrices enter inside square brackets Character strings enter inside single quotes Or… specify string input with ‘s’

7. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Matrix input Character input Run this program twice – once with numeric input and once with character input

8. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Indicates that the input should be interpreted as a string

9. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Section 7.2 Output Options Enter the name of a variable Use the disp function Use the fprintf function

10. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. disp The display (disp) function can be used to display the contents of a matrix without printing the matrix name

11. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. The disp function can also be used to display a string

12. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Strings are really arrays of character information The result is a character array

13. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. You can combine disp functions to create meaningful output from an M-file program, but the result of each disp function is on a separate line.

14. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Since the disp function only takes one input, you must combine arrays to make more complicated output Use the num2str(x) function to change numeric information to a string disp(['The values in the x array are: ' num2str(x)])

15. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Although these characters look like numbers, they are interpreted by the computer as part of a character array – they no longer have any numeric meaning Notice that the ans matrix is listed as a character array

16. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Hint If you want to include an apostrophe in a string, you need to enter the apostrophe twice. If you don’t, MATLAB thinks the apostrophe terminates the string. For example: disp('The moon''s gravity is 1/6th that of the earth')

17. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. This MATLAB program mimics a conversation, by using the input and disp functions. Watch the interactions as it runs in the next slide

18. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458.

19. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Formatted Output fprintf gives you more control over your output than the disp function You can combine text and numbers You can control how many digits to display, and their position

20. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. fprintf Arguments format-string includes place holders and formatting information for numbers list of matrices

21. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. fprintf The fprintf command is more flexible than the disp command, and allows you to put both variables and text onto the same line

22. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Place holder for your variable value Variable 8 total spaces 2 after the decimal point floating point format

23. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. You can also use exponential format

24. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. X is a matrix /n is a carriage return

25. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Despite the way it looks, the computer always considers a matrix as one big list, working down one column at a time This example was created on the student edition of MATLAB – Notice that the prompt is EDU

26. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Hint One of the most common mistakes new programmers make is to forget to include the f in the placeholder sequence. The fprintf function won’t work, but no error message is returned either.

27. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Hint If you want to include a percentage sign in an fprintf statement, you need to enter the % twice. If you don’t, MATLAB thinks the % is a placeholder for data. For example: fprintf('The interest rate is %5.2f % \n', 5) results in: The interest rate is 5.00 %

28. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Here’s another example that uses the input, disp and fprintf functions Write a program in an M-file that creates a table of degrees to radians Prompt the user to enter the table starting value, an increment between values, and a final value.

29. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458.

30. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Input

31. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Graphical Input You can enter ordered pairs of x and y values, by picking them off a graph ginput

32. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. ginput [x,y] = ginput Retrieves a set of ordered pairs from the graph everytime the enter key is struck [x,y]=ginput(n) Retrieves n ordered pairs

33. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Floating Crosshair When the ginput function is executed, a floating crosshair appears on the graph. Each time the enter key is struck, MATLAB picks the corresponding points off the graph

34. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Section 7.4 Cell Mode Cell Mode is new to MATLAB 7 It’s a utility that allows the user to divide an M-file program into sections, called cells Each cell can be executed one at at time

35. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. To activate Cell Mode Select Cell -> Enable Cell, from the Editing Window menu bar

36. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Cell Tool bar Cell tool bar Cells are created with cell dividers, %

37. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Evaluate Current CellEvaluate Cell and AdvanceEvaluate the entire file Show Cell TitlesCreate Cell Dividers Save and publish to HTML Divide and multiply valueIncrement and decrement value

38. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458.

39. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. html report created from the cell mode From the file menu, you can also chose to create reports in both Word and Powerpoint formats

40. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Section 7.5 Reading and Writing Data from Files Some common types of data files are dat txt xls jpg

41. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Import Wizard Use the import wizard to determine the data type and to suggest ways to represent the data Launch from the file menu From the uiimport funtion uiimport(‘filename.extension’)

42. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458.

43. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Command line approaches The import wizard requires interaction with the user MATLAB includes a series of import functions that automatically import the data You need to know what the data type is before you can use these

44. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Import functions To import a.mat or.dat file, use the load command Other functions can be found if you type doc fileformats For example, wavread can be used for wav files xlsread can be used for Excel files

45. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Exporting Data Use the save function for.mat or.dat files Use specialized functions for other file types For example xlswrite for Excel files

46. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Use the file menu to save a file interactively, using a variety of file formats

47. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Summary The input function allows the user to interact with the program by entering data at a prompt The disp function displays information in the command window, and is especially useful for titles and labels

48. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Summary - fprintf The fprintf function is more versatile than the disp function and allows you to combine text and numeric information in formatted output

49. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Summary - ginput The graphical input function allows the user to pick information off a graph, and store it as a series of order x-y pairs

50. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Summary – Cell Mode Cell mode allows the programmer to group M-file code into sections, and to run each section individually It includes options to publish M-files in html, Word or PowerPoint formats The cell toolbar allows the user to interactively change parameter values each time the code is executed

51. MATLAB for Engineers, by Holly Moore. ISBN 0-13-187244-3. © 2007 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is is protected by Copyright and written permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department, Pearson Education, Inc., Upper Saddle River, NJ 07458. Summary – Importing and Exporting Data MATLAB includes a number of specialized import functions optimized for a variety of file formats Companion functions allow data to be exported in the same file formats