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Finding and integrating peaks in a data array
The findpeaks function will accurately locate the peaks. Integrating them depends on what you want to do. In the past, I have ...

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Finding length of time in between peaks.
I already addressed this in my Answer to your previous question on exactly the same topic. If you are having problems with it...

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whats wrong with this code?
It works here. How are you calling your ‘aero_drag’ function? dens = rand v = rand A = randn(1,5) drag = aero_drag(de...

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usage of ode45
imshow(imread('WhatsApp Image...16.45 PM.jpeg')) syms M(t) I_1(t) I_2 V(t) t g mu A Y T Eq1 = diff(M) == -g*V*A Eq2 = diff(...

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Identifying PTT of ECG and PPG signals
Without your data, it is going to be nearly impossible to suggest an approach to this. Also, without your data, it is impossibl...

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Matlab fft plot axes
This would be my approach — Fs = 1000; Fn = Fs/2; L = 60; t = linspace(0, Fs*L, Fs*L+1).'/Fs; ...

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Omit nans from data set when calculating weights
Since NaN values are considered to be ‘missing’, to remove them from a specific vector (or matrix), you can use the rmmissing fu...

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Can anyone explain the difference in results for rainpl function between R2016b and R2021a?
The earliest available online information on rainpl is R2019a, so any changes between R2016b and R2019a are unavailable. (I don...

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how to plot time and frequency domain by using FFT from CSV file?
Try this — A = readmatrix('FILE060.CSV'); Asz = size(A) t = A(:,1); s = A(:,2:end-1); figure plot(t, s) grid xlim([m...

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Delete rows in a given array based on values in another array
Perhaps this — A = randi(99, 50, 1); Abfr = buffer(A,10) % Show Everything In 'A' B = randi(99, ...

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How to move the position of 2D projection of a 3D plot along the Z axis of the same figure?
Use surfc instead of surf, and then make appropriate changes to 'ZLocation' and 'FaceColor' in the contour part of the plot. ...

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Error using sym/matlabFunction>getOptions "Invalid Values"
As noted, the right-hand-side of ‘ode’ is 0, and that is not actually a differential equation. The left-hand-side is. The mi...

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an ode with arguements
You have five differential equations and three initial conditions. The initial conditions vector must have the same length a...

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Identify point in signal where it moves away from zero
Your signals are difficult to work with. That there are several together makes this more challenging than it might otherwise ...

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bar of mean of last 3 entries for 2 data sets
It would help to have your data. Perhaps something like this — Data1 = randn(30) + randn(30,1); Data2 = randn(30) + randn(...

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How to display a 150x150x150 matrix?
There are too many to plot here, so I only plot every 10 (of 150). Try this — Uz = unzip('microint0.mat.zip'); LD = load(U...

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Combining multiple rows from one matrix to another matrix
Use the reshape function — P=[1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 ...

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How do I fix the error "Execution of script interp2 as a function is not supported"?
You have a script that you named ‘interp2’ and that is throwing the error. The solution is to re-name the script to something...

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Make a surface plot
Creating surface plots from your data is straightforward using the scatteredInterpolant function. Once the ‘Cm’ matrix is creat...

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plotting data with different dimension in a 2d line plot
It would help to know what the (1x30) vector has in it, and how it was created. One option is to reshape it so that it fits w...

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is there a way to make the 0 x and y axis bold?
To make only the tick labels bold, use the FontWeight property in the NumericRuler Properties Ax = gca; Ax.XAxis.FontWeight =...

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Interpolating from one grid to another
It appears that ‘Temp1’ seems to not have made it to the save function argument llist. This interpolates ‘Temp2’ to the (X1,...

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Plotting surface charts when z is not a function of x or y
It would help to have the spreadsheet. The data can be extracted from it using either table or matrix indexing, once it is i...

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Fit gaussian to X-Y data (one X column, multiple Y column), for each Y column from an excel file.
One approach — T1 = readtable('X-Y_gauss_matlab.xlsx') figure plot(T1{:,1}, T1{:,2:end}) grid gausfit = @(b,x) b(1) .*...

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how can I delete some rows from a matrix
This creates a new matrix with only the odd rows from the original matrix — A = randi(9, 10,3) Anew = A(1:2:end,:) See the d...

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Why are all of my axes flipped in this figure?
Without your data I cannot run your code. The documentation states that the roll, pitch, and yaw angles have to be in degrees...

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Cannot read .xslx file
The R2024a version of readtable has no problems with it. Does this seem to be correct? T1 = readtable('Agora_I_4985.xlsx', '...

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Plotting an Inverse Laplace Function
If you have the Control System Toolbox — % (s + 100000) 147573952589676412928 14757395258967641292800000 % ----------------...

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Interpolate line data to grid matlab
Use the interp1 function — x = [0.0 5.0]; y = [1.0 3.8]; figure plot(x, y) grid hold on Ax = gca; xtix = Ax.XTick ...

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Matlab Legend Function dose not work at all
There are no errors when I run your code — x = linspace(0,pi); y1 = cos(x); plot(x,y1) hold on y2 = cos(2*x); plot(x,y2)...

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