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Peter H Charlton's Pulsewave Analyse and ppg-beat tools are not working well.
The best way to design a filter is to first calculate the Fourier transform of the signal, and then use that to design the frequ...

20 days ago | 1

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Create mean y values by multiple groups in one graph
Try this — T1 = array2table([1 2000 45 1 0 0 0 1 2001 56 1 0 0 0 1 2002 23 1 0 0 0 1 2003 56 1 0 0 ...

21 days ago | 0

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Why am I getting an error when running this R2024a example in R2023b?
The area function was introduced in R2024a, according to the documentation.

22 days ago | 0

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Add zero padding to fft
Let the fft function add it to the original time domain signal vector (it pads it at the end) by specifying the second argument ...

22 days ago | 0

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shifting of resonant frequency
I have no idea what ‘xlimit’ refers to, however the resample function could work.

22 days ago | 0

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How to draw a line in a bar chart in complete x area
The easiest option is to use the yline function — cat=categorical({'a','b','c'}) data = [37.6 24.5 14.6]'; errhigh = [2.1 ...

23 days ago | 0

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Help me determine why the Isolocalmax doesn't work after applying MinProminence.
You need to check the variable values. I cannot run this here (the Run feature is currently not working, at least for me, alt...

23 days ago | 0

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when using ode45 with the for loop, should I put the initial conditions inside or outside the for loop?
It is difficult to understand what your code does. If you are changing the parameters of the differential equations inside the ...

23 days ago | 0

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Answered
How to extract a for loop output after each iteration?
Perhaps — u(j,m,p,t) = ... ; in an appropriate place in the loop. This matrix could be huge and difficult to deal with. ...

25 days ago | 1

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Answered
Creating three shaded regions in a loglog plot
Perhaps something like this — R = 8.31; N = 6.022e23; Dia_air = 3.5e-10; P = 101325; Kn_1 = 0.1; Kn_2 = 10; Dia_al =...

26 days ago | 1

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Answered
How to display a symbolic formula without substitutions "where"?
@reincornator — I usually put this: sympref('AbbreviateOutput',false); just after the syms call in my code to prevent all the...

26 days ago | 1

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Make a surface (interpolated colors) plot with contour lines over it
You can use a surfc plot with tweks to the contour plot, and an appropriate view call — [X,Y,Z] = peaks(250); figure hs = ...

26 days ago | 0

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Answered
How to get x value for a given y value in a interp1 figure?
To get both of them — vv=[0.190934428093434,0.277000826121106,0.477820361464529,0.703789686451856,1,0.703789686451856,0.477820...

26 days ago | 1

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How can I use the Basic Fitting tool to create a trendline on different scatterplots within the same figure?
An easy way to do this is to use the lsline function. If you need the parameters of the line, they are relatively straightforwa...

26 days ago | 0

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How to smoothly interpolate signal data using another datasets timestepping
Yes. If you have the Signal Processing Toolbox, use the resample function. You can define the sampling frequency of the resamp...

26 days ago | 0

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EEG data preprocessing and filtering.
It seems to me that one or both filters are not designed correctly. The filtered result does not appear to be similar to the in...

26 days ago | 0

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My scatter plot points aren't showing up on my main line plot.
Perhaps something like this — [s2max,s2idx] = max(s2); [s3max,s3idx] = max(s3); figure hold on scatter(t(s2idx),s2max,'o...

27 days ago | 0

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Answered
Can not calculate coefficient Accurately
Only request the coefficients of ‘X2’ and then divide ‘EQ_01(2)’ by ‘X1’ — syms X1 X2 Disp = X1*(4*X2 - 4*X1 + 1) [EQ_01, T...

27 days ago | 0

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Is there any example of Range-Speed Response Pattern in MATLAB or how can i crate one?
See the Phased Array System Toolbox documentation section on Range and Doppler Estimation and then choose the appropriate sectio...

27 days ago | 0

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Extracting certain set of points from a 3D plot
I would use the contour function for this. Example — [X,Y] = ndgrid(-3:0.1:3); f = @(x,y) exp(-(x.^2+y.^2*3)*0.75); Z = ...

28 days ago | 0

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Reduce the number of peaks from findpeaks command?
The findpeaks function has a number of name-value pair arguments that you can use. The two I use most often are 'MinPeakPromine...

29 days ago | 0

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See if datetime is within range
I do not entirely understand what you want to do. One approach — D1 = {'3/25/2024 15:01:15' 1 '3/25/2024 15:01:31' 2...

29 days ago | 0

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how to use multiple '%c' on each variable ?
Add ‘VariantFy’ as an argument to the function as ‘L28’ (or whatever you choose to call it): function writefile(C,L28) and ...

29 days ago | 0

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Problem while attaining the coefficent of variable
You need to specify more terms in your coeffs call. The problem is that then the polynomial separates into two separate polynom...

1 month ago | 0

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histogram on data graph
One option (if your data were a scatter plot) would be the scatterhist or scatterhistogram functions. Otherwise, perhaps some...

1 month ago | 0

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Add a bar above a character in axis labels
Try this — figure ylabel('$\bar{c}$', 'Interpreter','latex') .

1 month ago | 1

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Answered
'readtable' in 2023 version error （This issue did not occur in 2018）
I do not understand ‘2023b the array only has many 3’, however I believe that the shortened table display in the last few releas...

1 month ago | 0

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Answered
Removing instantaneous jumps (outliers) from a time series data set
There are several functions to detect and remove outliers, depending on how you want to define them and deal with them. Here ...

1 month ago | 0

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Answered
Rate of Force Development for Isometric Mid-Thigh Pull
The denominator is a vector, so you need to use element-wise division (./) instead of matrix division (/) — rRFD = (r_Peak - r...

1 month ago | 0

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Substitution of symbols in equation after their values are being calculated
Try this — syms yApprox(X1) a0 a1 a2 a3 a4 a5 a6 syms a2 a3 a4 a5 a6 EQ_01=a2 +9*a3 + 72*a4 + 540*a5 + 3888*a6 == -121/36000...

1 month ago | 0

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