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Matlab Interview Questions & Answers - Learning Mode
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Matlab Interview Questions & Answers - Learning Mode

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. Typical uses include: Math and computation. Algorithm development. MATLAB (matrix laboratory) is a multi-paradigm numerical computing environment and fourth-generation programming language. MATLAB is a high-performance language for technical computing, integrating computation, visualisation, and programming in an easy-to-use environment where problems and solutions are expressed in familiar mathematical notation.

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Matlab Interview Questions & Answers - Learning Mode
Try Matlab Interview Questions & Answers - Exam Mode
Question: What can we use Matlab for?

Answer: Simple calculations 2. Plotting and analyzing mathematical relationships (2D and 3D) 3. List & Matrix Operations 4. Writing script files (a type of programming) 5. Symbolic manipulation of equations 6. Advanced visualization, animation and GUI interface tools Source: CoolInterview.com
Question: Explain about stress analysis in Matlab?

Answer: People working on these areas as a aerospace engineers should have familiarity and exposure to NASTRAN and MATLAB with knowledge on space environment and modeling of flexible dynamics. These aerospace engineers will be responsible to conduct stress analysis on metallic and composite structures. NASTRAN, IDEAD, Oracle and PATRAN proficiency level is required. Their duties also include on aircraft which are metallic and composite structures. This includes and understanding of control surface stiff Source: CoolInterview.com
Question: Explain The MATLAB mathematical function library?

Answer: This is a vast collection of computational algorithms ranging from elementary functions like sum, sine, cosine, and complex arithmetic, to more sophisticated functions like matrix inverse, matrix eigenvalues, Bessel functions, and fast Fourier transforms Source: CoolInterview.com
Question: Explain The MATLAB Application Program Interface (API)?

Answer: This is a library that allows you to write C and Fortran programs that interact with MATLAB. It include facilities for calling routines from MATLAB (dynamic linking), calling MATLAB as a computational engine, and for reading and writing MAT-files. Source: CoolInterview.com
Question: What can we use Matlab for?

Answer: Simple calculations 2. Plotting and analyzing mathematical relationships (2D and 3D) 3. List & Matrix Operations 4. Writing script files (a type of programming) 5. Symbolic manipulation of equations 6. Advanced visualization, animation and GUI interface tools Source: CoolInterview.com
Question: Why does MATLAB only calculate to 4 significant digits?

Answer: It doesn't. It uses full double-precision floating point numbers to calculate everything. By default it only prints a few

decimal places to the screen. You can change this using the command format long. Type help format for more information.

Source: CoolInterview.com
Question: how to Add noise to an image?

Answer: The function noise.m, now installed on ashland too, adds Gaussian, uniform, salt and pepper, additive or multiplicative noise to an image. Source: CoolInterview.com
Question: Explain The MATLAB working environment?

Answer: This is the set of tools and facilities that you work with as the MATLAB user or programmer. It includes facilities for managing the variables in your workspace and importing and exporting data. It also includes tools for developing, managing, debugging, and profiling M-files, MATLAB's applications. Source: CoolInterview.com
Question: how to Add noise to an image in Matlab?

Answer: The function noise.m, now installed on ashland too, adds Gaussian, uniform, salt and pepper, additive or multiplicative noise to an image. Source: CoolInterview.com
Question: How to correctly apply the graphics patches in Matlab?

Answer: Open a LOCAL MACHINE window and type: xhost +ashland # Add the following code sequence just before the plot command that was giving you problems: figure; set(gcf,'renderer','zbuffer'); [s,w] = unix('echo $DISPLAY'); set(gcf,'XDisplay',w); Source: CoolInterview.com
Question: How to modify the MATLAB path?


Answer: Easiest solution: use the PATHTOOL GUI. Or if you want command line access:

Suggested by Joshua Stiff: You can use addpath to add directories from the command line, and path2rc to write the current

path back to `pathdef.m'. If you do not have write permissions for `pathdef.m', path2rc can write to a different file, which

you can execute from your `startup.m'. Source: CoolInterview.com
Question: Explain about stress analysis?

Answer: People working on these areas as a aerospace engineers should have familiarity and exposure to NASTRAN and MATLAB with knowledge on space environment and modeling of flexible dynamics. These aerospace engineers will be responsible to conduct stress analysis on metallic and composite structures. NASTRAN, IDEAD, Oracle and PATRAN proficiency level is required. Their duties also include on aircraft which are metallic and composite structures. This includes and understanding of control surface stiff Source: CoolInterview.com
Question: Where can I find an archive of comp.soft-sys.matlab?


Answer: You can read past messages and post from the MATLAB Central Newsreader

(http://www.mathworks.com/matlabcentral/newsreader.html) application.

If you are looking for content prior to 1997, you can check other Usenet mirrors of cssm at mathforum.org

(http://mathforum.org/kb/forum.jspa?forumID=80) or google groups (http://groups.google.com/group/comp.soft-sys.matlab/).
Source: CoolInterview.com
Question: Explain The MATLAB language?

Answer: This is a high-level matrix/array language with control flow statements, functions, data structures, input/output, and object-oriented programming features. It allows both "programming in the small" to rapidly create quick and dirty throw-away programs, and "programming in the large" to create complete large and complex application programs. Source: CoolInterview.com
Question: What are the MATLAB System Parts?

Answer: The MATLAB system consists of five main parts:

* The MATLAB language.
* The MATLAB working environment.
* Handle Graphics.
* The MATLAB mathematical function library.
* The MATLAB Application Program Interface (API). Source: CoolInterview.com
Question: LaTeX in Matlab

Answer: Matlab already handles naturally simple LaTeX encodings that allow introducing Greek lettters or modifying the font size and appearance in plots.
Source: CoolInterview.com
Question: Explain LaTeX in Matlab?

Answer: Matlab already handles naturally simple LaTeX encodings that allow introducing Greek lettters or modifying the font size and appearance in plots. Source: CoolInterview.com
Question: On what machines Matlab should be run

Answer: Run it from sthelens, and only if sthelens is down, from cher, orsay or tiree. It works on other machines too, but some of the other machines have older versions of the OS and core dump upon exiting from matlab. Some other local machines with new setups work fine. Try your local machine. Matlab is blocked from running on the servers
Source: CoolInterview.com
Question: On what machines Matlab should be run?

Answer: We will run it from sthelens, and only if sthelens is down, from cher, orsay or tiree. It works on other machines too, but some of the other machines have older versions of the OS and core dump upon exiting from matlab. Some other local machines with new setups work fine. Try your local machine. Matlab is blocked from running on the servers Source: CoolInterview.com
Question: How can I make MATLAB use the full window width for displaying matrices?


Answer: In R12 (MATLAB 6.0), this can be controlled via a preference. Select the File | Preferences... menu item, and select Command

Window in the Preferences dialog that appears. In the Display section, there's a checkbox labeled Limit matrix display width

to eighty columns. Unchecking that box allows matrix displays to make full use of the Command Window's width. [Unchecked is

the default.]

Starting with MATLAB R12.1, users can access the current command window s Source: CoolInterview.com

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