MatLab Tutorial

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d. MatLab has a powerful graphics tool. x = linspace(0, 10, 100);y = sin(x);plot(x, y);plot(x, y, 'r-');z = cos(x);plot(x, y, 'r--', x, z, 'k.');There is much more about graphing in the other tutorial, but this will be all you need fortoday.----------------------------------------------------------------------------------------------------------------------------2. A program is a list of many commandsa. In MatLab, you write programs as text files and save them with a '.m' as the file extension.It is easiest to write these files with MatLab's built in text editor, but in theory you coulduse MSWord or any other editor. Before you begin, create a place to keep your MatLabprograms. - Create a folder on your desktop or thumb drive called something like'MyMatLab' or whatever.- Now set the MatLab's 'Current Folder' to your newly made folder byclicking on the ellipses button '…' in the middle of the control toolbaron the top-middle of screen.- Create a new m-file by clicking 'File > New > Blank M-File'- Save this (initially blank) file as 'PracticeScript.m' in your new folder.Note that MatLab program names being with a letter and end in '.m'.- Now copy and paste the following text into your m-file:close all; % Closes any current graphics windows.clear all; % Deletes any current variables.% Percent signs denote comments.x = linspace(-7, 7, 1000);y = sin(x) ./ x; % This is the famous sinc function.plot(x,y);- Press F5 on the keyboard to simultaneously save and run. This willbecome your favorite button when programming with MatLab.
. 'if-then' statements gives you the power of logic! - Replace the previous m-file content with the following:close all;clear all;user_input = input('Are you happy? (''1'' for Y, ''2'' for N.) \n');% If you want to single quote to appear as text, you% have to type two of them!if user_input == 1,disp('Oh brother!');elseif user_input == 2,disp('Boo hoo.');else,disp('Wrong answer!');end;% We would need to do something fancier to prevent errors% when something other than a number is typed.- Press F5.- Replace the previous m-file content with the following:% Tossing a coin.close all;clear all;clc; % Clears the current screen.x = 2*rand(1,1); % Random number between 0 and 2.if x >= 1,disp('Heads!')else,disp('Tails!');end;- Press F5.PRACTICE 2: Write a MatLab program that asks the user for their favorite number and theninsults them if you don't like their choice for some reason. Save this file as 'Practice2.m' in yourMatLab folder. Test it on your neighbor! Then show an REU mentor.
Page 1: Intro Programming Using MatLabMatt
Page 5: d. Unnumbered loops are useful when

MatLab Tutorial

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