Answered

Warning: Matrix is singular to working precision. how to solve?

There are ways of getting around a singular matrix, but they are a little ad hoc. have you tried QR decomposition ([Q,R] = qr(A)...

Warning: Matrix is singular to working precision. how to solve?

There are ways of getting around a singular matrix, but they are a little ad hoc. have you tried QR decomposition ([Q,R] = qr(A)...

1 day ago | 0

Answered

Shading between two curves

You can try using the "fill" function (could also use "patch"). Just off the top of my head, if you can compute the area between...

Shading between two curves

You can try using the "fill" function (could also use "patch"). Just off the top of my head, if you can compute the area between...

5 days ago | 0

Submitted

Minimum entropy deconvolution

This function develops a minimum entropy deconvolution filter for a sequence x

8 days ago | 7 downloads |

Answered

How to compare the values of 2 arrays vs each other?

What do you mean by "similar"? If you want simply see the number of entries that are the same, then this could do the trick: ...

How to compare the values of 2 arrays vs each other?

What do you mean by "similar"? If you want simply see the number of entries that are the same, then this could do the trick: ...

9 days ago | 0

| accepted

Answered

How to keep an element fixed until it fits a condition?

Can you clean up the code a little? It's not clear where the loops begin and end... A couple more questions/comments. 1) How...

How to keep an element fixed until it fits a condition?

Can you clean up the code a little? It's not clear where the loops begin and end... A couple more questions/comments. 1) How...

9 days ago | 0

Answered

I would like to know if my function is correct

You actually need not go through the whole for loop to do this. First off, I assume the number of entries in x is equal to the n...

I would like to know if my function is correct

You actually need not go through the whole for loop to do this. First off, I assume the number of entries in x is equal to the n...

9 days ago | 0

Answered

How to see how a dataset changes over time with PCA.

It's hard to know exactly what you are hoping to achieve here. When using pca(x) in Matlab, we are assuming that "rows of X corr...

How to see how a dataset changes over time with PCA.

It's hard to know exactly what you are hoping to achieve here. When using pca(x) in Matlab, we are assuming that "rows of X corr...

9 days ago | 0

Question

AR prediction leads fitted data

I am using aryule to construct a predictive AR filter. After I filter the data, the predicted values "lead" the actual data by o...

9 days ago | 0 answers | 0

Question

What is the difference between filter and conv?

I am trying to design a predictive AR filter using aryule. The code looks like this: h = aryule(signal,order); est_signa...

11 days ago | 2 answers | 0

Answered

Why is my loop only running 217 times when I expect it to run 649 times? See the script below

In your second script you assign the counter variable 'p' to be a single value, length(m(1,:)), which is simply 649. So Matlab c...

Why is my loop only running 217 times when I expect it to run 649 times? See the script below

In your second script you assign the counter variable 'p' to be a single value, length(m(1,:)), which is simply 649. So Matlab c...

7 months ago | 0

Answered

How to solve the double summation of the given expression

A blunt force method would be to have two for loops, one nested in the other. In the inner for loop, sum over the 'i' variables,...

How to solve the double summation of the given expression

A blunt force method would be to have two for loops, one nested in the other. In the inner for loop, sum over the 'i' variables,...

7 months ago | 0

Question

Matlab gradient does not follow exact numerical formula

When the numerical gradient is computed, Matlab uses forward differences for the end points, and uses central differences for t...

7 months ago | 1 answer | 0

Answered

How does MATLAB compute the covariance of a complex array?

So I answered my own question almost a minute after asking it. Turns out the transpose command, ', is actually the conjugate tra...

How does MATLAB compute the covariance of a complex array?

So I answered my own question almost a minute after asking it. Turns out the transpose command, ', is actually the conjugate tra...

7 months ago | 0

Question

How does MATLAB compute the covariance of a complex array?

I'm working with a complex array and looking at the covariance matrix and the relation matrix. (The explanation of these matrice...

7 months ago | 1 answer | 0

Question

Sign difference between coeff=pca(X) and [~,~,v] = svd(X)

I am experiencing sign differences between my computations for principal component analysis using the pca function and the svd f...

1 year ago | 1 answer | 0