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Implementation of edge detection for a digital image

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par Innocent MBARUBUKEYE
KIST - AO Electronics and telecommunication engineering 2008
  

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3.1.1. DEFINITION OF MATLAB.

MATLAB (MATrix LABoratory) is a programming language for technical computing from the math works, Natick, MA. It is used for a wide variety of scientific and engineering calculation, especially for automatic control and signal processing. Matlab runs on windows, Mac and a variety of unit based systems Developed by Cleve Moler in the late of 1970's and based on the original LINPACK and EISPACK FORTRAN libraries, it was initially used for factoring matrices and solving linear equations. Moler commercialized the product with two colleagues in 1984. MATLAB is also noted for its extensive graphics capabilities.[11]

Starting mat lab

To start MATLAB, you can use any of these methods.

Double-click on the MATLAB icon (called a "shortcut") that the installer creates on your desktop.

Click on the Start button, select Programs, and click on the MATLAB 6.5 entry. Select MATLAB 6.5 from this menu.

Using Windows Explorer, open your top-level MATLAB installation directory and double-click on the shortcut to the MATLAB executable, MATLAB 6.5.

Setting your initial current directory

By default, when you start MATLAB using the shortcut the installer puts on your desktop, the initial current directory is the $MATLAB\work directory, where $MATLAB represents the name of your installation directory. The \work directory is a good place to store the M-files you modify and create because the MATLAB uninstaller does not delete the \work directory if it contains files. You can, however, use any directory as your MATLAB initial current directory. To specify another directory as your initial current directory, right-click on the MATLAB shortcut that the installer creates on your desktop and select the Properties option. Specify the name of the directory in the Start in field.

Setting up matlab environment options

To include welcome messages, default definitions, or any MATLAB expressions that you want executed every time MATLAB is invoked, create a file named startup.m in the $MATLAB\toolbox\local directory. MATLAB executes this file each time it is invoked.

Configuring certain products

Certain products require additional configuration. The following table lists these products and the commands used to configure them. If you installed any of these products, see the documentation for that product for detailed configuration information.

PRODUC

COMMAND

MATLAB Notebook

Notebook-setup

MATLAB Runtime server

Rtsetup

Real-Time Windows Target

rtwintgt -setup

Table 3.1.a: shows products and the commands used to configure them.

Excel link versions

By default, Excel Link (a separately orderable product) supports two versions of Excel. This table lists which Excel Link files to use with each Excel version. Use the appropriate files for your version of Excel. You can find these files in the $MATLAB\toolbox\exlink subdirectory.

EXCEL VERSION

EXCEL LINK FILE

Excel 97 (Default)

excllink.xla ExliSamp.xls

Excel 7

excllink95.xla ExliSamp95.xls

Table 3.1.b: shows Excel files to use with each Excel version.

Finding information about matlab

After successfully installing MATLAB, you are probably eager to get started using it. This list provides pointers to sources of information and other features you may find helpful in getting started with MATLAB.

TASKS

DESCRIPTION

To get an overview of MATLAB and its capabilities

Read the Release Notes documentation

To find out what's new in this release

Read the Release Notes documentation

To start a product or run one of the demonstration programs

Use the Launch Pad in the MATLAB desktop

To get information about specific MATLAB feature

Choose the Help item in the MATLAB menu bar to view reference and tutorial information in hyperlinked HTML form.

To get help with specific questions you can't find answered in the documentation

Go to the Math Works Web site (www.mathworks.com), click on Support, and use the Technical Support solution search area to find more information

Table 3.1.c: shows finding information about matlab.

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