matlab_intro - ENEE408G Multimedia Signal Processing...

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Unformatted text preview: ENEE408G Multimedia Signal Processing: Introduction to M ATLAB Programming Version 0608 1 Introduction Matlab is a powerful computing, simulation, and prototyping tool with a wide range of applications including multimedia signal processing. Documentation and up-to-date technical information can be found online at http://www.mathworks.com/ . The computer classrooms in the UMD School of Engineering and ECE Department have the full version of Matlab installed. Students interested in using Matlab on their own computers may purchase a student version at the University Book Center or online at http://www.mathworks.com/academia/student_version/ . To begin a Matlab session, click on the Matlab icon from the Start Menu or the Desktop. Upon startup, the interface shown in Fig. 1 will appear 1 . 1.1 M ATLAB Features Command Window. Use the Command Window to enter commands, and run functions and M-files. Command History. The commands that you have entered in the Command Window are au- tomatically logged in the Command History window. You can view and execute previously used functions. Start Button and Launch Pad. The Matlab Launch Pad provides easy access to tools, demos, and documentation. Help Browser. Use the Help browser to search and view documentation for all MathWorks prod- ucts. The Help browser is a Web browser integrated into the Matlab desktop that displays HTML documents. To open a Help browser, click the help button in the toolbar, or type helpbrowser in the Command Window. Current Directory Browser. Matlab file operations use the current directory and the search path as reference points. Any file you want to run must either be in the current directory or on the search path. To search, view, open, or make changes to Matlab-related directories and files, use the Matlab Current Directory browser. Alternatively, you can use the commands dir , cd , and delete in the Command Window. 1 For more details, please refer http://www.mathworks.com/access/helpdesk/help/techdoc/matlab.shtml 1 Figure 1: Default layout of the Matlab desktop. After starting Matlab please change the current directory to your own working directory rather than staying in the default Matlab directories. Otherwise, you could accidentally overwrite some important files! Workspace Browser. The Matlab workspace consists of the variables declared during a Mat- lab session. Variables are added to the current workspace when declared in the Command Window, declared in a script, or loaded previously saved workspaces. The Workspace Browser also displays information about each variable. Alternatively, you may use the commands who and whos . Array Editor. Double-click a variable in the Workspace browser to see it in the Array Editor....
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matlab_intro - ENEE408G Multimedia Signal Processing...

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