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Data Organization in ECG Analysis: Separate Leads or Individual Signals
I am not certain what you want to do, or what question you are asking. In general, EKG data are analysed column-wise, with a t...

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Multiple Regression and Intercept
I see nothing wrong with the code, and it conforms to the example in the regress documentation. The only suggestion I have is...

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Plotting Cylinder Surface Using fill3
It is easier to use the surf function for this — % figure() % theta = 0:0.5:2*pi; theta = linspace(0, 2*pi, 11); xs = [cos(...

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Is the pvalue from an lmfit table derived from a two-sided or one-sided t-test?
For what it’s worth, when I updated my polyparci function, I used a default two-sided t-distribution to calculate the probabilit...

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I want to solve the equation in the picture and use ode45 to solve it, but after running for 5 hours there is still no result, I would like to ask if the program is written wrong or is there any optimization?
The system is ‘stiff’ probably because of the large variation in the magnitudes of the parameters. Using a stiff solver (ode1...

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Plot frequency responses based on the ODE results
I am not certain what result you want. The freqz function only works on Signal Ptocessing Toolbox filter results. To use the C...

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How do I perform a sin^2 or a cos^2 fit for my data?
Perhaps this — x = [0,10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,170,180]; y = [880,1200,1900,2700,3300,3600,3000...

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Training, validating, and testing model.
Perhaps I am missing something in your problem statement, however linear regressions such as that done by fitlm is a least-squar...

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how can I write a function of another function of two variables
Create the function and then call it in the function — rho = @(t,z) something; mu = @(t,z) c .* log(rho(t,z)*b ./ (1 - rho...

alrededor de 2 años hace | 0

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function where input is also output
You can certainly return the input as an output if you want to. A simple example — x = 42; [result_val, arg_val] = square_...

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Almanac function not work
It works here — format longG ref_pov=almanac("earth","bessel","meter") Since it worked previously, you may have a path pro...

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The graph doesn't disply
It actually does work. The problem is that the red line overplots it since it is plotted later, and hides the blue line. If yo...

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Derivative of table between NaN values
Depending on what you want to do, use either fillmissing or rmmissing to either interpolate the NaN values (fillmissing) or remo...

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Need to change the direction of polar plot theta tick labels from counterclockwise to clockwise.
Use the ThetaDir name-value pair to reverse the angle direction. (As a pilot myself, I appreciate this!)

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Tabulating the data obtained for my Matlab code
Create a table array with your variables (that I assume are ‘xi’ and ‘yi’ here) and then use writetable to save them as an Excel...

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How can I make the layout in the attached image with tiledlayout
It took a few experiments to get this to work. Try this — x = 0:0.1:31; y = sin((1:5).'*x*2*pi/32); figure tiledlayout...

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how to plot from CSV files?
It would help to have your data rather than an image of it. In the interim, try something like this — imshow(imread('Screen...

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Paramter optimization by curve fitting
The ‘options’ problem was easy to fix. Just use the name of the options structure you created in your ga call. There are a ...

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Find a peak within a pattern
It is not clear to me what you want to identify. You can easily identify the starting and ending points of the force signal u...

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How to create a function and call it?
See the documentation section on Function Basics.

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Fitting a data set by optimising multiple parameters
Perhaps something like this — T1 = readtable('Ask_17.05.2024.xlsx') a = T1.a; a(1) = 1E-4; ...

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shifting axis on both ends so graph does not have points on extreme end
imshow(imread('baseresistancemultiplot.jpg')) One option is: axis('padded') That will put space between the elements of th...

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How to apply low pass filter to forces generated by OpenFOAM?
Filters do not care what data you present to them. They assume that the data are sampled at constant intervals, and that the ch...

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How to create line connects between two semi circles?
I finally got this to work yesterday — If you’re interested, I’ll post my code .

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How to solve a highly non-linear ODE containing multiple powers?
It probably depends on what the values are. When I run it, it usually takes off to occasionally at some point, however in oth...

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Detect peaks before drop in signal
Withoiut having the data to work with, one option could be the islocalmax function. Use 'FlatSelection','last' since the tops ...

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Plotting the bode plot of a high pass filter using matlab
The ‘H’ calculation may be reversed. (I can’t read the axis values on the LTSpice plot image.) Perhaps this — f = logs...

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How to plot Chroma_Features for an audio file?
I proivided those files for you in my answer to your previous question Unrecognized function or variable 'chromagram_IF'. It ...

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How do I use the buffer function to operate real time on EEG signal files?
I seriously doubt that MATLAB can do real-time signal processing, unless you are also useing the Data Acquisition Toolbox and ap...

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How do I plot a quiver plot without the tail?
It doesn’t appear to be possible to turn the tails off, since there doesn’t appear to be any specific ‘tail-length’ property, an...

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