MATLAB is a high-performance language for technical computing. It integrates computation, visualization, and programming in an easy-to-use environment where problems and solutions are expressed in familiar mathematical notation. MATLAB accepts only vectors or arrays as inputs and uses syntax similar to C and C++. Writing programs in MATLAB is like writing algorithms. MATLAB can be started by selecting it from the Start menu or clicking its desktop icon. The MATLAB window is used for writing, running, and viewing results of MATLAB programs.

1. INTRODUCTION TO MATLAB SUBMITTED BY CHINMAYA MAHAPATRA

2. WHAT IS MATLAB MATLAB stands for matrix laboratory. It is a high-performance language for technical computing. It integrates computation, visualization, and programming in an easy-to-use environment where problems and solutions are expressed in familiar mathematical notation

3. USES Math and computation Algorithm development Data acquisition Modeling, simulation, and prototyping Data analysis, exploration, and visualization Scientific and engineering graphics Application development, including graphical user interface building

4. MATLAB LANGUAGE It accepts only vectors or arrays as inputs. All the valid syntax of ‘c’ and ‘c++’ are valid syntax here. Writing a program in MATLAB is just like writing an algorithm. It is user friendly . Many default commands do those works which require big programs to be written in ‘c’ or ‘c++’.

5. STARTING AND QUITTING MATLAB To start MATLAB on Microsoft Windows platform select the Start -> Programs -> MATLAB 7.0 -> MATLAB 7.0 Double-click the MATLAB shortcut icon on your Windows desktop. To quit MATLAB Click the close box × in the MATLAB desktop. Select Exit MATLAB from the desktop File menu. Type quit at the Command Window prompt.

6. MATLAB WINDOW

7. WRITING A PROGRAM IN MATLAB Follow the steps written and the figure shown Open a mat (.m) file in the MATLAB window . Click on file menu -> save -> your file name.m to save a file in MATLAB for further use . All the saved files can be accessed from the workspace directory present in MATLAB folder. Results of all the command written in .m editor can be seen in command prompt if programs are written without semicolon in .m editor. Press F5 to run the program after saving it.

10. Write clc; (to clear screen) Close all; (to clear command history) Clear all; (to clear workspace history) Figure below shows some command in command window. Just type x, y and x+y.

14. SIMPLE PLOT BAR PLOT STEM PLOT

16. CONCLUSION This provides the basic knowledge on MATLAB. In the MATLAB window by typing help all the commands can be found out. In the MATLAB window go to help toolbox . In that go to bioinformatics toolbox to perform jobs like Blast Sequence alignment Phylogenetic analysis Micro array analysis