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Feeds
pcolor plot: how to scale the smoothing differently in x and y directions
@Jonas GROS, I recommend you filter the image with a 2-D smoothing function, or kernel. The user specifies the horizontal and v...
4 days ago | 0
What is sound pressure level (SPL) in pspectrum code
@지호, I assume, based on your code, that your original signal has units of Pa. Thererefore let us make a seven-second-long simu...
4 days ago | 1
Can someone open this example?
@Athanasios, Yes. When I go to the URL which you supplied, the web page opens. Then I click the button labelled "Copy Command" ...
4 days ago | 0
Sign of lambda.eqlin
@Aidan, [edit: fix typos; code not affected] [Edit 2: Fix errors in code which @David Goodmanson pointed out - thank you. Con...
4 days ago | 1
Show time evolution of an hysteresis loop with color gradient
@Lucrezia, @dbp is right (as always!): please attach a mat file with the variables necessary to run the code fragment and make ...
10 days ago | 1
| accepted
How to differentiate a simulated camera function?
@Ali Haktan, You state "I want to have fixed 3-D points as inputs to the camera. I want to calculate the derivatives of their ...
11 days ago | 0
Approach to computing statistics on a latitude/longitude grid
@John Cruce, [Edit: I am replacing the script with a revised version that corrects a mistake in the previous version. The erro...
23 days ago | 0
how to create a volume from the revolution of a variable area trapezoid
@Robert Demyanovich {Edit 10/20/2025: Fix error in code below by changing a 1 to a 3. It was [hst(1),pt(i,3),pb(i,3),hsb(3),h...
1 month ago | 2
| accepted
How to measure similarity between FRFs in MATLAB
@Abo, [Edit: Change the formula for the normalized squared distance slightly: the change is to divide the squared distance by t...
1 month ago | 1
how to obtain the TSA standard deviation?
@Antonio, You can esitmate the mean frequency by counting zero crossings. Depending on the level of noise in the data, you may...
2 months ago | 0
| accepted
Does anyone have a MATLAB code example for a staggered grid (for 1D/2D problems)?
@Sajani, Here is a start, just to show how the grids set up in 2D: dx=0.1; Lx=1; dy=0.1; Ly=1; [PX,PY]=meshgrid(0:dx:Lx,0:dy...
2 months ago | 0
Por favor el pzmap código
@Mario Gustavo, (Traducido con Google.) Aquí se muestra un ejemplo del uso de pzmap para un sistema de tiempo continuo: un fil...
2 months ago | 0
Finding peaks and valleys, and associated indexes, of time-shifted noisy sinosidal waves
@Oshani, You write that you want (and I have added numbers to your three desires), 1. The signal value at each peak and t...
2 months ago | 0
| accepted
How to form clusters correctly while implementing the work "Energy Centroid Clustering Algorithm"?
@Anubhav, I agree that pseudocode 2 is not clear. In particular, it is not obvious how the sensors are to be partitioned into ...
2 months ago | 0
| accepted
I want to draw surf plot for the attached figure
@Tarek, You did not attach a figure. But let's suppose that you compute a function f(X,T), on a grid of X and T values. x=-4:0...
2 months ago | 0
| accepted
What algorithm does the scattered interpolant 'boundary' extrapolation use when it extrapolates to a convex hull?
@Atharv, I don't think you have misunderstood anything fundamental. The description is unclear. Here are examples to illustra...
2 months ago | 2
| accepted
what do the AudioDeviceWriter do with a complex inputdata?
@康, I ran your code and got the same results you describe: No error if I play the complex file, then the real. Both playbacks...
2 months ago | 0
Theoretical Basis and References for Hybrid SAC Example
@keyvan, Here are some citaitons from Matlab Help and elsewhere. For arXiv publications, you cna search for publicaiotns in pe...
2 months ago | 0
| accepted
Performing 2D convolution
@Travis, 2D correlation and 2D convolution are not different if the kernel is symmetric (except for the complex conjugation that...
2 months ago | 1
| accepted
How can I inpaint/interpolate data from an area that was masked during an experiment?
@Alex, Examine the data graphically to get some insight into the issues. x=((1:380)-0.5)/380; % x values from Exampledata.z...
3 months ago | 0
How can I write a MATLAB script to plot 3D and 2D knee joint data from a CSV file with customized axes and medial–lateral connections?
@MD MEHEDI HASSAN, [Edit: Fix spelling erros in my text. Fix incorrect matrix values for x-coordinates of medial box.] It appe...
3 months ago | 0
equations not dipslaying corectly in Matlab Answers window
Answering my own question, in order to check whether equations which I enter in an answer are displaying correctly now. I have a...
3 months ago | 0
| accepted
Question
equations not dipslaying corectly in Matlab Answers window
In the most recent two answers I have posted to Matlab answers (here, here), I have used the equation editor (Sigma, in the Matl...
3 months ago | 1 answer | 0
1
answercreate a code for butterworth 4th order bandpass filter without Signal Processing Toolbox
@Abhinit, [Edit: Make corections to formulas for a1 and a2 in the lowpass filter. Many of the equations I entrered with the ...
3 months ago | 0
Logistic regression in MATLAB (without Statistics and Machine Learning Toolbox)
@Alexandre Englert, [edit: The equation I entered with LaTeX, in my answer below, is displaying as a fuzzy gray rectangle on my...
3 months ago | 0
| accepted
Solving the Inverse Kinematics problem using a neural network
@po, Since I was unable to run your code, I tried making my own code to solve the inverse kinematics problem of a three-link pl...
4 months ago | 0
Help me in Solving PDE
@Muhammad Fahim, [Edit: fix typos (none in code).] Write the finite difference equations and solve it explicitly. This approac...
4 months ago | 0
| accepted
How to color system of PDEs with two population
@Neda, Using my code from the comment above, we can run the rest of your code: r=(0:0.2:10)'; Nr=length(r); theta=0:pi/36:2*p...
4 months ago | 0
| accepted
time Autocorrelation of horizontal velocity in PIV
@sunando, [Edit: Add example. Fix typos (none in the code).] [Edit 2: Add details to the explanation of how to change the hor...
4 months ago | 0
Is there a way to test the range of the parameters sigma and tau where my model remains stable?
@Christopher, One way to measure stability in your simulation is to compute the coefficient of variation (ratio of standard dev...
6 months ago | 0
