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Vivek Selvam

MathWorks

Last seen: 1 month ago Active since 2013

Application Support Engineer at MathWorks with a background in Mechanical and Aerospace Engineering.
Professional Interests: Robotics, Controls, Math, Programming, Gaming

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Answered
MATLAB Coder for FSK Demodulation
Hi Mounika, Code generation is successful when using Name-Value pairs for comm.FSKDemodulator as follows: fskDemod_M = comm.FS...

2 years ago | 0

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Answered
SAMSUNG GALAXY S4 CANNOT run simulink model on it
This is because the <http://www.mathworks.com/help/releases/R2015a/simulink/slref/display.html Simulink Display> blocks are not ...

6 years ago | 1

Answered
introducing a new variable
<http://www.mathworks.com/matlabcentral/newsreader/view_thread/315950 Hope this link helps.>

8 years ago | 1

Answered
Why isn't my color assignment working in this bar graph?
<http://www.mathworks.com/matlabcentral/answers/99092 This link says how to.> Hope the following illustration helps. Slope...

8 years ago | 0

Answered
create a new matrices by using existing matrices
Hope this helps. x = a(:,1) y = a(:,2) want = [2 3 4] choose = ismember(x,want) & ismember(y,want) ...

8 years ago | 0

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Answered
can you help me to programming algorithm of x^n and n! ,and plotting in same figure
This may help you get started doc hold doc factorial doc power vectorization : http://www.mathworks.com/help/matla...

8 years ago | 0

Answered
Making a heat map from three vectors
You may find this useful. http://www.mathworks.com/matlabcentral/newsreader/view_thread/21043

8 years ago | 0

| accepted

Answered
Z must be size 2x2 or greater. HELP
1. |T5| needs to be a matrix but is a vector. Check |size(T5)|. You would want to change the order of these lines from ...

8 years ago | 1

| accepted

Answered
Formatting Multiple Curves in One Plot
Try plot(x,y1,x,y2,...,x,yn) instead of plot(x,[y1 y2 ... yn]).

8 years ago | 0

Answered
collect data from a text file without a uniform structure
Since the file is not uniform, you would need a loop to process line by line. Following is a way you can try: filename...

8 years ago | 0

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Answered
Did not find solar cell block in 2010a, 2011a and 2013a matlab
The solar cell block is available under SimElectronics library. To check if it is installed, type |ver| in the matlab comman...

8 years ago | 0

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Answered
index out of bounds because size(yout)=[0,0] / optimization with fmincon
In your code, you have initialized |yout| to an empty matrix ( |yout| = |[]|). Then in function |trackmmobj|, you are trying to ...

8 years ago | 0

Solved


Cell joiner
You are given a cell array of strings and a string delimiter. You need to produce one string which is composed of each string fr...

8 years ago

Solved


Bullseye Matrix
Given n (always odd), return output a that has concentric rings of the numbers 1 through (n+1)/2 around the center point. Exampl...

8 years ago

Solved


Nearest Numbers
Given a row vector of numbers, find the indices of the two nearest numbers. Examples: [index1 index2] = nearestNumbers([2 5 3...

8 years ago

Solved


Return the largest number that is adjacent to a zero
This example comes from Steve Eddins' blog: <http://blogs.mathworks.com/steve/2009/05/27/learning-lessons-from-a-one-liner/ Lear...

8 years ago

Solved


Which values occur exactly three times?
Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if x = [1 2...

8 years ago

Answered
How to construct this vector without loop?
vec = 3*(1:n); A = cell2mat(arrayfun(@(x) 1:x,vec,'UniformOutput',0)); or vec = 1:n; A = cell2mat(arrayfun(...

8 years ago | 0

Answered
Share variables among my different GUI's
This <http://www.mathworks.com/matlabcentral/answers/2002 link> may be of help.

8 years ago | 0

Answered
help with concatenation to open file
Try |doc function| for the new functions you find in the following code. This is one way to do what you want: a ...

8 years ago | 0

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Answered
How can I suppress or change the error message 'Undefined function or variable'
You can try this: number = ''; % str2double returns NaN if input is not a real or complex scalar value while isnan(...

8 years ago | 1

| accepted

Answered
convert a double array to something like logical
Hi Theodor, You can try a look-up table like this: lut = logical(diag(ones(1,7))); A = [1 5 7 4]'; S = lut(A(:...

8 years ago | 0

Answered
How to calculate a angle between two vectors in 3D
This code uses your angle calculation and shows for different reference points (3d). 2d is the same for your formula. % Or...

8 years ago | 2

| accepted

Answered
How to sort data once it is read into matlab
This should solve your problem. data = textscan(fid, '%s %s %s'); instead of data = textscan(fid, '%s %f %f');

8 years ago | 0

Solved


Target sorting
Sort the given list of numbers |a| according to how far away each element is from the target value |t|. The result should return...

8 years ago

Solved


Remove the vowels
Remove all the vowels in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill' Output s2 is 'Jck nd Jll wn...

8 years ago

Solved


Summing digits
Given n, find the sum of the digits that make up 2^n. Example: Input n = 7 Output b = 11 since 2^7 = 128, and 1 + ...

8 years ago

Solved


Sort a list of complex numbers based on far they are from the origin.
Given a list of complex numbers z, return a list zSorted such that the numbers that are farthest from the origin (0+0i) appear f...

8 years ago

Answered
dB scale (log scale) of a polar plot graph
You can try this: <http://www.mathworks.com/matlabcentral/fileexchange/26476-a-basic-polar-plot-tool-in-db-linear-scale Polar P...

8 years ago | 0

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