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Nishitha Ayyalapu

MathWorks

Attivo dal 2013

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I'm an Application Support Engineer at Mathworks.
Professional Interests: Wireless Communications, Signal Processing

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find values in a matrix above a threshold
Let "M" be the matrix with its 1st column as month, 2nd as Day, 3rd as year, 4th as discharge. Since "threshold" is only over di...

quasi 11 anni fa | 1

Risposto
Help me sketch the sprectrum of this signal.
doc angle doc real doc imag 1.) For Phase Respone plot(f,angle(X)); 2.) To plot real and imaginary parts ...

quasi 11 anni fa | 0

Risposto
How can I change multiple lines in a text file?
Here is the working code. Small tweaks to your existing code solved the problem. 1.) Generate a random only for new type of m...

quasi 11 anni fa | 1

| accettato

Risposto
How can I use a fonction result in a new script.
doc function Example function result = Addition(X,Y) result = X+Y; end Now in any other script you can jus...

quasi 11 anni fa | 0

Risposto
How can I calculate and plot the spectral power density of Square Root Raised Cosine Pulse using fft?
I edited your inital code to go from single-sided spectrum to two-sided. Fs = 10; %Sampling frequency T = 1/Fs; %Symbol...

quasi 11 anni fa | 2

| accettato

Risposto
How can I calculate and plot the spectral power density of Square Root Raised Cosine Pulse using fft?
However to answer how to get negative frequency axis: 1.) Do fftshit 2.) change frequency axis accordingly. Below is th...

quasi 11 anni fa | 0

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hwo to solve linear time variant differential equations?
It actually depends on whether you want a numerical or a symbolic solution. 1.) For numerical solution These would be help...

quasi 11 anni fa | 1

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how can I use Newton's method to find the extremum with error < 10^-4 ?
These functions can do the job: Derivative-free approach: fminsearch Derivate based approach fminunc You can ...

quasi 11 anni fa | 0

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Recreating a multiport switch with code
1.) Store each data stream as a column vector (just the values). Since time stamps for all the streams are starting at 0 and sam...

quasi 11 anni fa | 0

| accettato

Risposto
Matrix manipulation, turning a column vector into a square matrix?
This should do the job if you have four column vectors: data = [reshape(data(:,1),100,100) reshape(data(:,2),100,100)... ...

quasi 11 anni fa | 0

Risposto
how to import a file in MATLAB?
You could use readtable Lets say your data is in testdata.txt then following would create a table "T" with 7 column...

quasi 11 anni fa | 2

| accettato

Risposto
Deleting complete row having negative integer at any position
Here is an example code that would help: A = [22 33 43 55; 11 22 -33 44; 55 22 33 -44; 99 88 77 66]; ...

quasi 11 anni fa | 1