Community Profile # William Rose

Active since 2007

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Bivariate Markov switching auto regressive model
@Marco Santorsola, Please post the equations describing the evolution of the two variables of the bivariate Markov process. Si...

circa 3 ore ago | 1

Minimize a function using simulated annealing algorithm
@Álvaro Recalde, Simulated annealing is best suited to combinatorial minimization problems. Simulated annealing can also be app...

circa 7 ore ago | 1

Autocorrelation of Bessel Function using MATLAB
@Ahmad Qayyum, @Image Analyst assumes that the function whose autocorrelation you seek is a Bessel function. And that was my ...

1 giorno ago | 1

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Plot: How to reflect a curve and multiply by another curve to produce 3d plot.
@Anand Rathnam, You said you imagine a cylinder. That suggests you want to rotate the reflected 2D curve about its middle. Is...

14 giorni ago | 0

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How can I replicate this plot using these differential equations and parameters?
@faraz khan, @Torsten is exactly correct, as usual. But since you are still stuck, here's some additional help. Define a sta...

15 giorni ago | 1

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The difference of SSE and MAE curve fitting and optimization
@Shaily_T, In most curve-fitting problems, you will not see a big difference when you minimize SSE versus minmize sum of absolu...

15 giorni ago | 0

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How to plot an x value using for loop from an input?
@Hunter Nau, You are plotting each point of the descent as a separate series, which is why you cannot connect them. This also m...

15 giorni ago | 0

Need help with this question please
@Roy Pearson, You included a script, broken into overlapping parts. The script has missing parts, for example in lines 9-11, 1...

15 giorni ago | 0

How to create and use transfer function for multi input multi output systems
@Osman Mert, I do not understand what kind of transfer funciton you want to create. Is a transfer function (as you intend the ...

15 giorni ago | 0

ecoacoustics - acoustic indices
@Christine, I don;t think this exists in Matlab - you will have to write it. The acoustics toolbox info is here. There do not ...

15 giorni ago | 0

plotting signals in frequency domain
@Sadi M Jawad Ahsan, Here is an example of what I was saying in my previous answer. Note that I define a vector of time values ...

15 giorni ago | 0

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plotting signals in frequency domain
@Sadi M Jawad Ahsan, [correcting my spelling mstakes] You have made an excellent start on the problem. I do not understand yo...

15 giorni ago | 0

How to present the determinant and eigenvalue using FprintF function
@Jonas Morgner, You can display the symbolic d2 and d3 using fprintf() as shown below. Note that d2 is a string variable, so I...

15 giorni ago | 0

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How can I obtain the eigenvector from a matrix?
[V,D]=eig([7,3;3,-1]) V is the vector of eigenvectors and D is the diagonal matrix of eigenvalues.

15 giorni ago | 0

how to plot ellipse around poincare map of RR intervals
@Dominik Smolinsky, Here is code that draws an ellipse that is designed to capture 95% of the data points. By adjusting a valu...

circa un mese ago | 0

How can I write this in MatLab?
@Hunter Manning, N=10000; T=501; %number of particles and times a=0.1; %amplitude of each step (+ or -) x=ze...

circa un mese ago | 0

Solving second order non-linear partial differential in three independent variables
@Mahesh Nallamothu, An analytical solution exists: Consider a solution which is independent of z and . In other words, T(r)...

circa un mese ago | 0

Solving second order non-linear partial differential in three independent variables
@Mahesh Nallamothu, Yes you can. [Editing because I made a mistake in analyzing your postiing.] Matlab's PDE toolbox is very p...

circa un mese ago | 0

i have 3 matrices the first one is 3x3 the second is 1x3 the third is 3x2 and i want to build new matrix using the 1st raw of the 1st and the second row of 2nd he 2nd
@fatima haydar ahmad, You wrote: "i have 3 matrices the first one is 3x3 the second is 1x3 the third is 3x2 and i want to buil...

circa un mese ago | 0

Extracting Audio File Frequency
@mehtap agirsoy, I wrote a script that extract 3 seconds of sound from each vocalization. As I said before,the times of note-s...

circa un mese ago | 0

Extracting Audio File Frequency
@mehtap agirsoy, I have listened to file A1.wav. The instances of singing are not at 15 second intervals, even though this is ...

circa un mese ago | 0

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Extracting Audio File Frequency
@mehtap agirsoy, Middle C! The frequency sweep in my code goes from A3 to A5.

circa un mese ago | 0

Extracting Audio File Frequency

circa un mese ago | 0

Anderson Darling Goodness-of-the-fit test?
@Ines, @Debbie Green, Calculating the AD statistic is straightforward, and the attached function does it. Figuring out the p-v...

circa un mese ago | 3

How to remove a range of frequencies from a time series using the Lanczos filter?
@Tracka Lowd, I recommend using the day as the unit of time. A three day time scale corresponds to a frequency of (1/3) per da...

circa 2 mesi ago | 2

Solving a System of 2nd Order Nonlinear ODEs
@mpz, Please show how you converted the two differential equations, labeleled "7" and "8" in your figure, to a set of first ord...

circa 2 mesi ago | 1

How could I implement a CFAR threshold in analyzing a time-frequency decomposed signal plus AWGN?
@Maximiliano Barbosa, The plots appear to be made with stft(). The SNR appears to be lower in the second plot. The vertical a...

circa 2 mesi ago | 0

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I'm trying to get my code to run some iterations to calculate different combinations. It needs to run every combination of height and diameter for all angles
@Tapuwa Shambira, Is this function called by another script? If so, give an example. You said the function creates a figure. ...

circa 2 mesi ago | 0