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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) .*...

2 years ago | 0

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Answered
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...

2 years ago | 0

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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...

2 years ago | 0

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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', '...

2 years ago | 0

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

2 years ago | 0

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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 ...

2 years ago | 0

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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)...

2 years ago | 0

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Answered
Symbolic solution is too long
I added the simplify calls and let this run for a while in MATLAB Online — clear clc tic syms t y1(t) y2(t) y3(t) y4(t)...

2 years ago | 0

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Displaying error bars on scatter plot (Bland-Altman plot)
We are missing ‘mean_diff’ and ‘std_diff’ . Using rand to correct for that for now. The errorbar plot needs 2 to 4 arguments...

2 years ago | 0

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Answered
I want to find two missing parameters in an ODE system of equations using regression/optimization in MATLAB
I do not completely understand your problem. If y9ou have values for all the variables as functions of time from the beginning ...

2 years ago | 0

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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...

2 years ago | 1

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Answered
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 ...

2 years 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.

2 years 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 ...

2 years ago | 0

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

2 years 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 ...

2 years 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...

2 years 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 ...

2 years 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. ...

2 years 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 =...

2 years 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...

2 years 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 = ...

2 years 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...

2 years 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...

2 years 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...

2 years 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...

2 years 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...

2 years 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...

2 years 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...

2 years 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 = ...

2 years ago | 0

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