Lokesh Ravindranathan

MathWorks

Active since 2013

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Professional Interests: Signal Processing, Programming, Code Generation

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Answered
matlab 2010 xlswrite error
This question has been answered here: http://www.mathworks.com/matlabcentral/answers/3840

11 years ago | 0

Answered
Creating and Using Java Objects
The error in your code is not due to the version of JDK, but how, you add use the function JAVAADDPATH. The solution is availabl...

11 years ago | 0

Answered
Error with Blkproc.m
This solution <http://www.mathworks.com/support/solutions/en/data/1-FA7L9M/?solution=1-FA7L9M> explains the reason for the error...

11 years ago | 0

Answered
In order to use my compiled mex function windows SDK 7.1 is required... Does anyone know why?
Note, you are use a mex file <http://en.wikipedia.org/wiki/MEX_file>. MEX file have dependencies. This could be one reason why w...

11 years ago | 0

Answered
how to convert a grayscale image to binary sequence
For converting image into binary sequence, use the function im2bw <http://www.mathworks.com/help/images/ref/im2bw.html> Fo...

11 years ago | 0

Answered
How can I read data from a buffer at certain intervals (ie. every 20 ms)?
I would recommend following the approach showing the help page: <http://www.mathworks.com/help/matlab/matlab_external/timerperio...

11 years ago | 0

Answered
efficient way of transforming vector
b is the resultant vector b = []; j = 1; for i = 1:numel(a) b(j: j + a(i) - 1) = i; j = j+ a(i); end

11 years ago | 0

Answered
How can I download Psychtoolbox?!
I think you should check if SVN has been installed correctly. Did you install SVN as a root user? Try installing as a root, ...

11 years ago | 0

Answered
How can I get a GUI connecting to MATLAB via a button
Maybe a good place to start would be to use dexplore (http://www.mathworks.com/help/database/ug/dexplore.html). This is the GUI ...

11 years ago | 1

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Answered
Method set don't work
Your code is working correctly. The reason why the set method appears like not working is because the get method is dependent on...

11 years ago | 2

| accepted

Answered
Is there a way to get MATLAB to filter out specific rows in arrays?
The following code does filtering for your problem. a = [10000.5 3 120; 10001.0 5 112; 10001.5 1 117; ...

11 years ago | 0

Answered
How do you initialize an N*M matrix?
I am assuming you are trying to create an empty matrix of zeros of dimensions N*M. You can try the following instead M = z...

11 years ago | 2

Solved


Roll the Dice!
*Description* Return two random integers between 1 and 6, inclusive, to simulate rolling 2 dice. *Example* [x1,x2] =...

11 years ago

Solved


Swap the input arguments
Write a two-input, two-output function that swaps its two input arguments. For example: [q,r] = swap(5,10) returns q = ...

11 years ago

Answered
Why Magic Square[ magic(n) ] gives results diifferent on different situation?
If you look at the documentation for magic function http://www.mathworks.com/help/matlab/ref/magic.html. There is an algorithms ...

11 years ago | 0

Answered
How do I make MATLAB list the various sequences possible for a specific purpose?
I think there could be couple of issues in the code. I could not execute your code completely, since I do not have access to you...

11 years ago | 0

Solved


Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

11 years ago

Solved


Add two numbers
Given a and b, return the sum a+b in c.

11 years ago

Solved


Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

11 years ago

Answered
Do I need to create a GPIB object before connecting to a function generator?
Could you be more specific about the object g. How did you create it? Its possible that the address is incorrect. Also, make...

11 years ago | 0

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Answered
How to make a 4D graph
Technically, you cannot visualize 4d plot in MATLAB. That being said, you can 3d slices in matlab using the slice command http:/...

11 years ago | 1

Answered
How test the presence of a toolbox
This solution http://www.mathworks.com/support/solutions/en/data/1-G5BY2M/index.html?product=SL&solution=1-G5BY2M is relevant fo...

11 years ago | 2

Answered
Problem writing Summation code
L = 1:10; % Assuming L d = linspace(2,3,10); % Assuming d n = sum(l .* (log10(d))) / (10 * sum((log10(d)).^2)) This ...

11 years ago | 0

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Answered
Cannot generate MEX function
I think the same issue has been discussed here: http://www.mathworks.com/matlabcentral/answers/2926

11 years ago | 0

| accepted

Answered
Convert MATLAB program to C++
Hi Yudong, We currently do not support code generation for the image processing functions such as imread, edge, strel, etc an...

11 years ago | 1

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Answered
When I run my program I outputs a weird error message.
It s a warning message with an escape sequence which is not ISO standard. I think your file contains these escape sequences.

11 years ago | 0

| accepted