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Star Strider


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Hic sunt dracones! PROFESSIONAL: Physician (M.D.): Diplomate of the American Board of Internal Medicine; M.Sc. Biomedical Engineering: Instrumentation, Signal Processing, Control, System Identification, Parameter Estimation NON-PROFESSIONAL: Amateur Extra Class Amateur Radio Operator; Private Pilot, Airplane Single Engine Land, Instrument Rating Airplane; Gamer NOTE: I do not respond to emails or personal messages, unless they are about my File Exchange contributions. Time Zone: UTC-7 (Standard); UTC-6 (Daylight Savings/Summer)

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Risposto
Curve Fitting Young's Modulus for Stress Strain Curve
I am not certain what you want to do. To fit the initial linear portion of the curve, you can either usee polyfit or mldivide, ...

2 giorni fa | 0

Risposto
How to calculate the period of the 6th wave in my data when I dont have the equation of the wave
I’m not sure what the ‘6th wave’ is. The problem is that you need to give findpeaks a bit more information. Here, I added Mi...

3 giorni fa | 0

Risposto
How can I use Interp1 here instead of ismembertol?
That might be possible. The interp1 function requires two vectors of equal size, and then returns the interpolated value of the...

3 giorni fa | 0

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Risposto
How can I change a variable and collect an vector of outputs?
One approach is to define a vector of ‘V’ values and then iterate. Try something like this — % process Parameters V = 10 %...

3 giorni fa | 0

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Risposto
How to automate creating separate timetables?
Creating separate variables for each one is definitely not recommended. One option would be to create them as cell arrays, fo...

5 giorni fa | 0

Risposto
toolbox functions not working
Sometimes this can be due to path problems. Running these: restoredefaultpath rehash toolboxcache from a script or you...

5 giorni fa | 0

Risposto
How to flip a scatter3 plot?
I am not quite certain what you want. Perhaps this — xyz = rand(50,3) figure scatter3(xyz(:,1),xyz(:,2),xyz(:,3),25,xyz...

6 giorni fa | 0

Risposto
Getting error installing Matlab on Linux
See this recent search for potential solutions.

6 giorni fa | 0

Risposto
Fittg covid 19 SEIRD model
See: Parameter Estimation for a System of Differential Equations among other examples on how to do this.

6 giorni fa | 1

Risposto
Why do I get conj(L)
The Symbolic Math Toolbox assumes all variables are complex, so it adds the conj to be complete. Specifying that the variables ...

8 giorni fa | 0

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Risposto
how to plot a certain level in a contour?
Extracting the contours for a specific level is straightforward. Try this — [x,y,c] = peaks(20); cilevels = [0.0,.005,0.01...

8 giorni fa | 0

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Risposto
How do you return computational time and memory allocated during function call?
There are a few functions you can use for timing, one of which is the tic, toc pair. Most current recommendations are to use du...

9 giorni fa | 1

Risposto
how to plot (0 1) matrix on figure
I am not certain what you intend by ‘dot plot’, however the spy function exists to do just that, if you only want to depict the ...

9 giorni fa | 0

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Risposto
Programmatically find fzero of two RCL functions
It seems that the curves don’t intersect. The ‘funcVR’ function never crosses zero, although the ‘funcVL’ function does — f...

10 giorni fa | 0

| accettato

Risposto
Finding x and y values of minimum z in 2-variable function.
Is there a particular reason to use that sort of iteration? MATLAB has a number of optimization funcitons you can use, with fmi...

10 giorni fa | 0

Risposto
way to legend a data organized into colours in simple plot?
I am not certain what you want. One option — first_data = [[3 4 8 1];[3 6 4 9]]; % desired legend (first) & color (green) ...

12 giorni fa | 1

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Risposto
I'm trying to plot a graph with if than statements but keep getting the error "Array indices must be positive integers or logical values."
The definition of ‘positive integer’ are integers greater than zero. So use: for i=(1:n) instead of: for i=(0:n) There...

12 giorni fa | 0

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Risposto
period segmentation of wrist pulse signal
See: Combining repetitive curves into one average curve for an example. This demonstrates how to segment them and also how to c...

13 giorni fa | 0

Risposto
I am receiving an Error using plot
Use the matlabFunction function, evaluate it with ‘t’ and then plot — m1 = 49/1000; m2 = 31/1000; l1 = 0.5; l2 = 0.5; M = ...

13 giorni fa | 0

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Risposto
How to create a sound like this?
Firstt, look to see what their spectrograms reveal — uz = unzip('examples.zip') for k = 1:numel(uz) fn = strrep(string...

15 giorni fa | 0

Risposto
graph the function using ezplot() and plot()
Perhaps this — syms x y % 2y^2 = -3x^3+5x , -2.5≤x≤2.5. Eqn = 2*y^2 == -3*x^3+5*x % Add O...

15 giorni fa | 0

Risposto
Using Fill between two curves semilog plot
If you are using flipud, you will need to vertically concatenate the vectors (that are presumably column vectors), so instead of...

16 giorni fa | 0

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Risposto
Filtering a Single Column of One Table Based on Multiple Criteria from Another Table.
I’m not sure that I fully understand your problem, however the join function (or one of its friends innerjoin or outerjoin) may ...

17 giorni fa | 0

Risposto
Too many input arguments
Plotting over ranges of ‘t’ and ‘u’ defines a surface, so create vectors for both of them, and use either ndgrid or meshgrid (th...

17 giorni fa | 0

| accettato

Risposto
Edit window does not open in Ubuntu 24.04.2
There seem to be problems with the latest updates to 24.04 with respect to MATLAB. Yours is the third post I have seen on 24.04...

18 giorni fa | 0

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Risposto
Suitable function(s) to be used for plotting the graph
Instead of using: plot(t,zz,'o-'), grid use: fplot(zz, [min(t) max(t)],'o-'), grid since ‘zz’ is a symbolic expression and...

18 giorni fa | 0

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Risposto
Iam getting the following ERRO: Array indices must be positive integers or logical values on the following code.
You need to create the ‘q’ functions as Anonymous Functions and then call them as functions of ‘t’ in the plot calls. Try thi...

19 giorni fa | 0

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Risposto
IFFT of frequency dataset
‘(not starting at 0)’ That’s probably the problem. Essentially your data are then a sort of rectangular-window-bandpass-fil...

19 giorni fa | 0

Risposto
Plotting around zero deg. Angle
Aside from not having any image to work with, I am not certain what you want. First use plot to see what the problem may be. ...

20 giorni fa | 0

Risposto
MATLAB R2023b gui in ubuntu 24 is not opening files after launch. Displaying some errors and shutdown
According to MATLAB and Simulink Requirements 24.04 is supported. It would be best for you to Contact Support for installatio...

20 giorni fa | 0

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