How to work on Matlab.......

INTRODUCTION TO INTRODUCTION TO MATLABMATLAB

WHAT IS MATLABWHAT IS MATLAB

MATLAB stands for matrix laboratory. MATLAB stands for matrix laboratory. It is a It is a

high-performance language for technical computing. high-performance language for technical computing.

It integrates computation, visualization, and It integrates computation, visualization, and

programming in an easy-to-use environment where programming in an easy-to-use environment where

problems and solutions are expressed in familiar problems and solutions are expressed in familiar

mathematical notationmathematical notation

USESUSES

Math and computationMath and computation

Algorithm development Algorithm development

Data acquisition Data acquisition

Modeling, simulation, and prototypingModeling, simulation, and prototyping

Data analysis, exploration, and visualization Data analysis, exploration, and visualization

Scientific and engineering graphics Scientific and engineering graphics

Application development, including graphical user interface buildingApplication development, including graphical user interface building

MATLAB LANGUAGEMATLAB LANGUAGE

It accepts only vectors or arrays as inputs.It accepts only vectors or arrays as inputs.

All the valid syntax of ‘c’ and ‘c++’ are valid syntax here.All the valid syntax of ‘c’ and ‘c++’ are valid syntax here.

Writing a program in MATLAB is just like writing an algorithm.Writing a program in MATLAB is just like writing an algorithm.

It is user friendly .It is user friendly .

Many default commands do those works which require big programs Many default commands do those works which require big programs

to be written in ‘c’ or ‘c++’.to be written in ‘c’ or ‘c++’.

STARTING AND QUITTING MATLABSTARTING AND QUITTING MATLAB To start MATLAB on Microsoft Windows platformTo start MATLAB on Microsoft Windows platform• select the select the Start -> Programs -> MATLAB 7.0 -> Start -> Programs -> MATLAB 7.0 ->

MATLAB 7.0MATLAB 7.0

• Double-click the MATLAB shortcut icon on your Windows Double-click the MATLAB shortcut icon on your Windows

desktop.desktop.

To quit MATLABTo quit MATLAB

• Click the close box Click the close box ×× in the MATLAB desktop. in the MATLAB desktop. • Select Exit MATLAB from the desktop File menu. Select Exit MATLAB from the desktop File menu.

• Type quit at the Command Window prompt.Type quit at the Command Window prompt.

MATLAB WINDOWMATLAB WINDOW

WRITING A PROGRAM IN MATLABWRITING A PROGRAM IN MATLABFollow the steps written and the figure shownFollow the steps written and the figure shown

Open a mat (.m) file in the MATLAB window . Open a mat (.m) file in the MATLAB window .

Click on Click on file menufile menu -> save -> your file name.m -> save -> your file name.m to save a to save a file in file in MATLABMATLAB for further use . for further use .

All the saved files can be accessed from the workspace directory All the saved files can be accessed from the workspace directory present in MATLAB folder.present in MATLAB folder.

Results of all the command written in .m editor can be seen in Results of all the command written in .m editor can be seen in command prompt if programs are written without semicolon in .m command prompt if programs are written without semicolon in .m editor.editor.

Press F5 to run the program after saving it.Press F5 to run the program after saving it.

Write clc; (to clear screen)Write clc; (to clear screen) Close all; (to clear command history)Close all; (to clear command history) Clear all; (to clear workspace history)Clear all; (to clear workspace history) Figure below shows some command in command window. Just typeFigure below shows some command in command window. Just type

x, y and x+y.x, y and x+y.

CONCLUSIONCONCLUSION

This provides the basic knowledge on MATLAB.This provides the basic knowledge on MATLAB.

In the MATLAB window by typing help all the commands can be In the MATLAB window by typing help all the commands can be found out.found out.

In the MATLAB window go to help toolbox .In the MATLAB window go to help toolbox .

In that go to bioinformatics toolbox to perform jobs likeIn that go to bioinformatics toolbox to perform jobs like

• BlastBlast• Sequence alignmentSequence alignment• Phylogenetic analysisPhylogenetic analysis• Micro array analysisMicro array analysis