Answered
how to plot eigenvector calculated from eigs from the matrices created by freefem++
@AMIT, quiver() is good for 2-D vectors; quiver3() for 3D. For an example, I will use the magic square matrix, but I could us...

2 months ago | 0

Answered
how get the range from FFT on FMCW radar data
@Simeon, You need to specify exactly what the signal that you have consists of. It could be the received signal mixed with a re...

2 months ago | 0

Answered
How to plot a linear function?
@Jenni, [edit: Fix typo: change "values at" to "values are"] It looks like you want to plot measured data as well as the best-...

2 months ago | 0

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Answered
Why the calculated phase differs so much from the real phase of the signal?
@Janko, The DFT expresses a signal x(k) as a sum of sinusoids, each of which is sampled at regular intervals. The phase angles...

3 months ago | 2

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Answered
Create a node in the space between two nodes (A and B) and following the direction normal to a node (N)
@Alberto Acri D=(A+B)/2; % the location E=cross((A-B),(N-D)); % the direction good luck

3 months ago | 0

Answered
How to solve this function?
@Ramesh, I am not sure what you mean by "how do you solve this function". You have posted a function. par=struct('A',1,'E',2,...

3 months ago | 0

Answered
Solving 2d heat problem using meshgrid
@Ali, [edit: fix spelling erors] A 10x10 mesh for this problem is so few points that it makes it hard to set up the problem an...

3 months ago | 0

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Answered
How to reduce \t commands
@TheSaint, Hard to say, since we don't know what F and SC and E are. You use the word table. Have you used Matlab's T=table...

3 months ago | 0

Answered
Advice on formulating a minimization function
@Collin Pecora, If you want to use multiple sources of data, with different levels of measurement error, to estimate parameters...

3 months ago | 0

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Answered
looped 3D FFT of 4D data
@sbr, P2 is 64x64x64. P1 is 1x33. Your plot shows that one column along one corner-edge of the cube P2 is zero. But P2 is not...

3 months ago | 0

Answered
Plot a Probability Density Function in 3D
@Victor Carneiro da Cunha Martorelli, For a one-dimensional random variable, you could do the Kolmogorov-Smirnov test, or the A...

3 months ago | 0

Answered
Detect boundaries seperating data blocks in a time series signal
@Ashley, I am actually very impressed that findchangepts() did so well. I recommend adjusting the optional arguments of findch...

3 months ago | 0

Answered
How to get the value of X-axis at the -3dB
@Chris, There is no guarantee that H(f) will = -3 dB at one of the frequencies at which you evaluate H(f). Therefore, since it ...

3 months ago | 1

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Answered
Special case of spectrogram not match FFT
@John, There are many ways to normalize a spectrum. Mathematicians like to have a factor 1/sqrt(n) in the forward and reverse ...

3 months ago | 0

Answered
Fourier transform spatial domain-DSP
@Nimasha Pilippange, Matlab's fft() will work fine on spatial data. The only difference is in the interpretation of the transf...

3 months ago | 0

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Answered
two signal one is original signal i.e. pulses and other is receiving signal with a noise. finding the delay in signal by using the cross correlation.
@Mahesh, The error above occurs if you pass a non-integer scalar value for receiver_signal, because a scalar is interpreted as...

3 months ago | 0

Answered
How to find fitting optimized parameters to fit a system of non-linear ODEs to experiment.
@Buhari Ibrahim Matlab has excellent tools for this. https://www.mathworks.com/help/optim/ug/optimizing-a-simulation-or-ordina...

3 months ago | 2

Answered
How to delete or exclude an entire matrix if it contains all zeros
@Caitlin, you'll have to be more specific about how you are reading in the data in order to get a useful answer. X=zeros(10,10)...

3 months ago | 0

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Answered
Huge inaccuracies in plotting diode IV characteristic in Matlab
@Nicholas, It is clear that your model does not fit your data. So there has been an error in the data collection, or the mdoe...

3 months ago | 1

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Answered
Adjusting Parameters in Transcranial Doppler Audio Processing: Seeking Guidance on Gain, SWEEP, and Audio Playback
@PatrĂ­cia, For colors, you can specify a colormap that gives colors more like what you want. See here, and scroll down to see ...

3 months ago | 0

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Answered
Inconsistency between Matlab eig() function and Matlab generated C code eig() function
@Hugoz, I am not sure how you generated the C code, but I suspect the C code is wrong. Matlab's eig() is extremely well tested...

3 months ago | 0

Answered
Fitting an ellipse based 3D PointCloud on 3D space
@Tingting, The data file you provided is a triangulation object. To fit an ellipse to the data, extract the vertices. load('3...

3 months ago | 0

Answered
Inconsistent solutions for numerical integration of non-linear differential equations?
@Marco, [Edit: Change "higher level solvers are able to achieve..." to "higher order solvers may achieve...", because the highe...

3 months ago | 0

Answered
How to use MATLAB to simulate and obtain farmland plots?
@marvellous, Yes you can. You'll need to specify something about the shape, for example, the number of vertices. I'm sure ...

3 months ago | 1

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Answered
Amplitude decrease after FIRRateConverter
@Yuhan Chiang, [edit: fix spelling errors] Please post the data file and code you used to make the initial figure. You said y...

3 months ago | 0

Answered
Creating cartesian volumetric dataset from polar coordinates
@Eun, This is quite do-able. I know there are people on this site who are very much able to assist you. I have experience usi...

3 months ago | 0

Answered
Solve a system of coupled differential equations with ODE23s
@Thomas Stone-Wigg, Does your code run? Do you want help making it run at all, or help making it run better? If better, bette...

3 months ago | 0

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Answered
How to locate the bifurcation point of the flow
@Charles Taylor Taylor, You provided a quiver plot. Since you have a quiover plot, you obviously have the arrays X,Y,U,V. You...

3 months ago | 0

Answered
heatmap help - how to display grouped data across 3 levels (LO, MED, HI) ?
@Douglas Leaffer, Make a single variable Vstat with three categories: LOW, MED, HIGH, rather than three separate variables. ...

3 months ago | 0

Answered
Difference between theoretical power spectral density and pwelch/periodogram ARMA models
@Simona Turco, When estimating the transfer function with pwelch(), remember to compute the denominator. Estimate the PSD of...

3 months ago | 1

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