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**Content Feed**

Derivative constraint in curve fitting

If you absolutely have to make sure your constraints are met, you have to change your fitting equation so that all possible solu...

2 years ago | 0

Help starting two dimensional vector plot (meshgrid and quiver) problem

Use the maxwell equation to determine the D inside the cable. Hint: define gaussian surface which is a concentric cylinder with...

2 years ago | 1

How do I draw an antenna pattern 2D and 3D figure with this data?

You have insufficient data to plot a 3D Figure, as it would require a measurement for every observation angle (combination of az...

2 years ago | 1

| accepted

How to deal with repeated data in a column of a table

It sounds like you're looking to remove repeating elements that are adjecent. If that is the case, you can test your array for d...

2 years ago | 0

| accepted

Modify and speed up a for loop

The last line can be brought outside the loop like so Mat_appo = zeros(N,N,K); for k=1:K Mat_appo(:,:,k) = (u(:,k)*u(:,k)'...

2 years ago | 0

what command should i use to have real part of the eigenvalues of the matrix in symbolic form

Use the sym command when defining the matrix m=sym('m') n=sym('n') A=sym([0 1 1/sqrt(3*n*m); 2 4 2/sqrt(3*n*m); 3 4 5/sqrt(3...

2 years ago | 0

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How to use ODE 45 to integrate equations of motion?

First, you need to write down your equations of motion. In your simple case, you have: with initial conditions Of course, ...

2 years ago | 0

Calculate the mean of nonzero pixels

Replace the last line by meanval = mean(nonzeros(masked_volume)); That said, are mask and volume the same size? Those for loo...

2 years ago | 0

Help! Trouble understanding differential equation.

Your differential equation is time-dependent, with given g(t). Ode45 works iteratively, and calls the function more than once wi...

2 years ago | 0

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Need help with cutting 37 seconds off from start of wav file.

[y,fs] = audioread(filename); filename = 'C:\Users\ajbaf\Music\mlabpost\wm7001.wav'; y(1:37*fs,:) = []; %% this deletes the ma...

2 years ago | 0

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Resampling two signals to the same sampling time and length

Interp1 should work fine here if size_input is the number of samples of your input, and size_output is the number of samples of...

2 years ago | 0

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Question

How do I change all the elements in matrix with an index larger than a certain number to zero?

I have trouble making a certain matrix even though it seems trivial. For my code I need to make a 4-D matrix A with dimensions ...

6 years ago | 1 answer | 0