Star Strider
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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已回答
I want to check if a Physio Net ECG Kit toolbox is still up to date.
Write to the code author. That is the esiest way to get appropriate information. Note that PhysioNet has changed significant...
I want to check if a Physio Net ECG Kit toolbox is still up to date.
Write to the code author. That is the esiest way to get appropriate information. Note that PhysioNet has changed significant...
1 day 前 | 0
已回答
representation of a cell array in 2025b
One option is to use the '{:}' representation to see the contents -- Names = {{'abc'},{'def'},{'ghi'},{'jklmnop'}} Names{:} ...
representation of a cell array in 2025b
One option is to use the '{:}' representation to see the contents -- Names = {{'abc'},{'def'},{'ghi'},{'jklmnop'}} Names{:} ...
3 days 前 | 0
已回答
Weird LaTeX result of $\tilde{}$ in R2025b version.
That appears to be what the interpreter now defines as '\tilde'. I thought it might be defaulting to '\widetilde' , however th...
Weird LaTeX result of $\tilde{}$ in R2025b version.
That appears to be what the interpreter now defines as '\tilde'. I thought it might be defaulting to '\widetilde' , however th...
6 days 前 | 0
| 已接受
已回答
Gibbs-like behaviour with lowpass on long signals
Your code and results appear to be appropriate. The only change I made here was to add 'ImpulseResponse='iir'' to the lowpass...
Gibbs-like behaviour with lowpass on long signals
Your code and results appear to be appropriate. The only change I made here was to add 'ImpulseResponse='iir'' to the lowpass...
6 days 前 | 1
| 已接受
已回答
How i can measure magnitude and phase angle of a given waveform? or how i can measure phase difference of two sinusoidal waveforms? please help me
See: Signal Fitting with sine curve (and how to find out the phase shift?) for one approach to this problem.
How i can measure magnitude and phase angle of a given waveform? or how i can measure phase difference of two sinusoidal waveforms? please help me
See: Signal Fitting with sine curve (and how to find out the phase shift?) for one approach to this problem.
6 days 前 | 0
| 已接受
已回答
Issues creating a scatter graph
Use curly braces {} to access data in a table -- Depth= A{:,4}; Magnitude= A{:,5}; That also avoids using the table2array ca...
Issues creating a scatter graph
Use curly braces {} to access data in a table -- Depth= A{:,4}; Magnitude= A{:,5}; That also avoids using the table2array ca...
7 days 前 | 0
已回答
Trying to figure out a algorithm to filter out some data, since I dont have any additional toolbox.
The filloutliers function is a core MATLAB function (no toolboxes required) introduced in R2017a. Using it on your data -- ...
Trying to figure out a algorithm to filter out some data, since I dont have any additional toolbox.
The filloutliers function is a core MATLAB function (no toolboxes required) introduced in R2017a. Using it on your data -- ...
7 days 前 | 0
| 已接受
已回答
I know line 4 goes wrong,but I don't know how to correct it. If anyone know it,I firmly hope to get your advice.
Your code looks correct to me. You set the initial condition to be 'y(0)==2' and that is what dsolve returned: From the plot,...
I know line 4 goes wrong,but I don't know how to correct it. If anyone know it,I firmly hope to get your advice.
Your code looks correct to me. You set the initial condition to be 'y(0)==2' and that is what dsolve returned: From the plot,...
8 days 前 | 0
已回答
Plot serial time data from excel file
Your data does not look like the data in the image file. I made some changes (additions) to your code to plot only the 't' an...
Plot serial time data from excel file
Your data does not look like the data in the image file. I made some changes (additions) to your code to plot only the 't' an...
9 days 前 | 0
| 已接受
已回答
How to I plot a graph from this data
Use curly braces {} to get datafrom a table -- Radius = A{:,1}; Density= A{:,2}; VPV= A{:,3}; VSV= A{:,4}; QK= A{:,5}; QM...
How to I plot a graph from this data
Use curly braces {} to get datafrom a table -- Radius = A{:,1}; Density= A{:,2}; VPV= A{:,3}; VSV= A{:,4}; QK= A{:,5}; QM...
9 days 前 | 1
| 已接受
已回答
Read Excel file in Matlab and plot data
Use curly braces {} to access data in a table. data = readtable('HUAM1709.041_v2.xlsx') % return T = data{:,1}; T = second...
Read Excel file in Matlab and plot data
Use curly braces {} to access data in a table. data = readtable('HUAM1709.041_v2.xlsx') % return T = data{:,1}; T = second...
10 days 前 | 0
| 已接受
已回答
MATLAB 2025a new fonts. How do I use them.
I do not have that font in Ubuntu 24.04, MATLAB R2025b. You can select whatever font you like in the various MATLAB settings ...
MATLAB 2025a new fonts. How do I use them.
I do not have that font in Ubuntu 24.04, MATLAB R2025b. You can select whatever font you like in the various MATLAB settings ...
13 days 前 | 0
已回答
Extracting data from .txt file
Without having a .tb file to work with, and your description of it as a text file, I would use the readtable function with the F...
Extracting data from .txt file
Without having a .tb file to work with, and your description of it as a text file, I would use the readtable function with the F...
15 days 前 | 0
| 已接受
已回答
matlab liscence issue in linux
See: Fedora 42 - Unable to launch MVM server: License Error: Licensing shutdown for one solution.
matlab liscence issue in linux
See: Fedora 42 - Unable to launch MVM server: License Error: Licensing shutdown for one solution.
15 days 前 | 0
已回答
Files deleted on MATLAB Online and now on my local drive
Contact Support There is always a possibility that they are not actually lost from MATLAB Online, and can be recovered. (I h...
Files deleted on MATLAB Online and now on my local drive
Contact Support There is always a possibility that they are not actually lost from MATLAB Online, and can be recovered. (I h...
18 days 前 | 0
已回答
How to extract data from a figure as a text file
You have all the information available already in (x1,y1) and (x2,y2) and the findpeaks output. That is apparently all the in...
How to extract data from a figure as a text file
You have all the information available already in (x1,y1) and (x2,y2) and the findpeaks output. That is apparently all the in...
18 days 前 | 1
已回答
How to compare two measurement datas from 2 different devices?
It would help to have the data, or at least a representative sample of it. Without knowing more, I would create a grid over t...
How to compare two measurement datas from 2 different devices?
It would help to have the data, or at least a representative sample of it. Without knowing more, I would create a grid over t...
20 days 前 | 1
已回答
Finding peaks and valleys, and associated indexes, of time-shifted noisy sinosidal waves
These data are not eqsy to work with, and there is so much noise that effective filtering is impossible. Also, the data were no...
Finding peaks and valleys, and associated indexes, of time-shifted noisy sinosidal waves
These data are not eqsy to work with, and there is so much noise that effective filtering is impossible. Also, the data were no...
22 days 前 | 1
已回答
i am not getting the output graph
What operating system are you using? What MATLAB version/release are you using? I had a problem similar to this with Ubunt...
i am not getting the output graph
What operating system are you using? What MATLAB version/release are you using? I had a problem similar to this with Ubunt...
25 days 前 | 0
已回答
asking for buying laptop for matlab
For the essential requirements,see Choosing a Computer to Run MATLAB and Simulink Products. I encourage you to explore that ent...
asking for buying laptop for matlab
For the essential requirements,see Choosing a Computer to Run MATLAB and Simulink Products. I encourage you to explore that ent...
25 days 前 | 1
已回答
reduce mesh quantity in isosurface plot
We have a problem ... I used a script I wrote earlier to extract the text from your .m file to run here. I post all of it he...
reduce mesh quantity in isosurface plot
We have a problem ... I used a script I wrote earlier to extract the text from your .m file to run here. I post all of it he...
26 days 前 | 0
已回答
Fitting 8 equations simultaneously with three parameters
You might be able to use the mldivide, \ function -- Example -- % Eq. 1: 2A+3B+5C-1=0 % Eq. 2: -5A+2B-10C+12=0 % Eq. 3: 9A...
Fitting 8 equations simultaneously with three parameters
You might be able to use the mldivide, \ function -- Example -- % Eq. 1: 2A+3B+5C-1=0 % Eq. 2: -5A+2B-10C+12=0 % Eq. 3: 9A...
27 days 前 | 3
已回答
Force arrays to print to screen without multiplier
Experiment with the format function. Example -- vProduct = 1.0e+03 *[0.0048 0.0076 3.1440 -0.004...
Force arrays to print to screen without multiplier
Experiment with the format function. Example -- vProduct = 1.0e+03 *[0.0048 0.0076 3.1440 -0.004...
27 days 前 | 0
已回答
MATLAB won't invert a function in the Laplace domain...
After running your code (with n=1.1), it seems that the problem is that using a non-integer value for 'n' produces non-integer e...
MATLAB won't invert a function in the Laplace domain...
After running your code (with n=1.1), it seems that the problem is that using a non-integer value for 'n' produces non-integer e...
29 days 前 | 1
已回答
Why doesn't matlab start?
According to the System Requirements, that should probably work. (Note the 'version 22H2' requirement for Windows 10.) Sinc...
Why doesn't matlab start?
According to the System Requirements, that should probably work. (Note the 'version 22H2' requirement for Windows 10.) Sinc...
1 month 前 | 0
已回答
apply colour bar colours to data points
The third and fourth arguments of scatter can control the size and colours of the plotted points. It is also necessary to defin...
apply colour bar colours to data points
The third and fourth arguments of scatter can control the size and colours of the plotted points. It is also necessary to defin...
1 month 前 | 0
已回答
Time to peak using findpeaks
I usually have findpeaks return the indices of the peaks. Your definition of the start time point isnot obvious. I would use...
Time to peak using findpeaks
I usually have findpeaks return the indices of the peaks. Your definition of the start time point isnot obvious. I would use...
1 month 前 | 1
| 已接受
已回答
Discrepancy when plotting step response of two identical transfer functions.
We do not have the original data. I suspect that you are seeing the loss of precision due to using only 4 significant digits ...
Discrepancy when plotting step response of two identical transfer functions.
We do not have the original data. I suspect that you are seeing the loss of precision due to using only 4 significant digits ...
1 month 前 | 0
| 已接受
已回答
tiledlayout("vertical") with multiple columns
I am not certain that tiledlayout can easily do what you want. It might be easier to use subplot instead. That way, you can ...
tiledlayout("vertical") with multiple columns
I am not certain that tiledlayout can easily do what you want. It might be easier to use subplot instead. That way, you can ...
1 month 前 | 0
已回答
Mean of 3D matrix based on range of first dimension
Perhaps something like this -- A = randn(360,360,720); At = A(100:200,:,:); Atm = mean(At, 1); AtmSize = size(Atm) ...
Mean of 3D matrix based on range of first dimension
Perhaps something like this -- A = randn(360,360,720); At = A(100:200,:,:); Atm = mean(At, 1); AtmSize = size(Atm) ...
1 month 前 | 0
| 已接受
