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Star Strider


Last seen: Today Active since 2012

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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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Answered
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...

ungefär 3 timmar ago | 0

Answered
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 ...

ungefär 5 timmar ago | 0

Answered
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...

ungefär 5 timmar ago | 0

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

en dag ago | 0

| accepted

Answered
Digitizing a black and white Electrocardiogram scan
A File Exchange search reveals these contributions. An Interweb search also reveals GRABIT, and there are others. That shou...

2 dagar ago | 0

Answered
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; ...

2 dagar ago | 0

Answered
Remove Matlab three dots
The ellipsis dots (...) are continuation operators. You would probably have to remove them manually, or use the strrep or repla...

2 dagar ago | 0

Answered
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...

3 dagar ago | 0

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Answered
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...

4 dagar ago | 0

Answered
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 .

5 dagar ago | 0

Answered
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...

5 dagar ago | 0

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Answered
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 ...

5 dagar ago | 0

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Answered
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...

6 dagar ago | 0

Answered
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 ...

6 dagar ago | 1

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Answered
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...

7 dagar ago | 1

Answered
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...

8 dagar ago | 0

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Answered
Curve fitting and parameter estimation with lsqcurvefit
If you look at your data, I do not believe that there is any way to use your ‘SEIR’ model to fit them — T1 = readtable('infec...

9 dagar ago | 0

Answered
How to normalize the baseline of multiple Differential Pulse Voltammetry Curves?
Without actually having the data to work with, my first approach would be to use the detrend function on each curve.

11 dagar ago | 1

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Answered
Scatter graph trend line adjustment and outlier removal
The only option that I can suggest is the rmoutliers function. You will have to experiment with it to get the result you want....

11 dagar ago | 0

Answered
How do I plot 14th and 86th percentile?
Use the prctile function to calculate those percentiles.

11 dagar ago | 0

Answered
how to rename columns with names like Var2_1, Var2_2...?
Probably the easiest way: data.Properties.VariableNames(2:end) = {'Var2','Var3','Var4'}; Example — data = array2table(rand(...

11 dagar ago | 1

| accepted

Answered
Create multi slopes from a profile
I am not certain what you want. This code performs a linear regression on the line clusters and then plots it for each of them....

12 dagar ago | 0

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Answered
Searching for Transferfunction between two functions
Use the System Identification Toolbox. The actual transfer function is probably a simple delay term or that includes one, for...

12 dagar ago | 0

Answered
What is the best way to zoom this graph so there is no white space?
pix = dir('*.png'); for k = 1:numel(pix) figure imshow(imread(pix(k).name)) end Add this line after the plot: x...

13 dagar ago | 0

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Answered
table2timetable with Time as double
The resample function works with timetable arrays. See Resample Nonuniformly Sampled Data in Timetable for an example. Times...

13 dagar ago | 0

Answered
How apply trapz on the double definite integral
You have not provided enough information to write specific code. As a general rule, to use double integration with trapz, cre...

13 dagar ago | 0

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Answered
Plot a surface for a 3D matrix 2x361x360
Taking a wild guess (since the actual matrix has not been provided, and I don’t know how you want them plotted) — A = rand(2,3...

15 dagar ago | 0

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Answered
read and store data from struct file during each iteration in the for loop
I am not certain what result you want. Try this — % load('matlab') % whos('-file', 'matlab') % % Measurements field...

15 dagar ago | 0

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Answered
How to add hat in the plot legend?
Perhaps this — x = (0:10); y = rand(11,2); figure plot(x, y(:,1), '-g', 'DisplayName','$i_a^{true}$', 'LineWidth',2) ho...

16 dagar ago | 0

Answered
How to filter rows from excel in matlab
There are two principal options. If you are only importing the dates as strings, use the weekday function — D = '12 May 202...

17 dagar ago | 0

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