Star Strider

Last seen: Today | 自 2012 起处于活动状态

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)

Statistics

All

查看徽章

Content Feed

已回答
Plot complex signal with imaginary and complex
This is relatively straightforward — Fs = 1000; Tlen = 10; t = linspace(0, Tlen*Fs, Tlen*Fs+1)/Fs; s = exp(1j*t*2*pi); R...

42 minutes 前 | 0

已回答
Plotting 3D by rotate 2D plot around y-axis
Probably the easiest way is to define a cylinder and a shape vector — yv = [linspace(0.3, 1, 50)]; ys1 = yv.*exp(-1.75*yv)*5;...

3 hours 前 | 1

已回答
Unable to find symbolic solution
The system is nonlinear, so it quite likely does not have an analytic solutioon. Try something like this— syms y(x) x Y D...

14 hours 前 | 0

| 已接受

已回答
Using histcounts to determine loose data mode
I am not certain what you want to do. The histcounts function has a third output bin that will index into the elements that w...

20 hours 前 | 0

已回答
Find kinetic constants from differential equations
Some examples: Monod kinetics and curve fitting , Parameter Estimation for a System of Differential Equations , and there are s...

1 day 前 | 0

已回答
How do you indicate the order of plotted points in a polar plot?
Unforutnately, quiiver and polaraxes don’t work together. The only alternative is to create your own polar axes as Cartessian a...

1 day 前 | 0

| 已接受

已回答
How to calculate respiratory rate from a Doppler radar signal
Perhaps something like this — LD = load(websave('radar_signal','https://www.mathworks.com/matlabcentral/answers/uploaded_files...

2 days 前 | 0

| 已接受

已回答
Where to find changes in functions in Matlab versions?
See: Release Notes, however that only goes back as far as R2018a. I am not certain that other documentation exists online, alth...

2 days 前 | 0

已回答
calculate the maximum of every 24 data in matrices
If the times are in (or can be converted to) datetime arrays, one option would be to transpose the matrix so that the sensors ar...

3 days 前 | 0

| 已接受

已回答
How do I fill legend on double y axis plot?
Without seeing your code (and your MATLAB version, although I’m not certain how relevant that is in this instance), it’s not pos...

3 days 前 | 0

已回答
How to improve speed of interp1 in for loop?
I’m not certain that I follow what you’re doing. However if you know the ‘inputValue’ and you want to find the closest indices ...

3 days 前 | 0

已回答
plot function legend is wrong.
The legend is probably picking up the first line plotted, that by default is blue. Perhaps this — figure (55) for i = ...

3 days 前 | 0

已回答
Upgrading R2021b to R2023a, Need Instructions
There is no actual ‘upgrade’ involved. Simply download R2023a (choose to create the desktop icon if that is available with your...

3 days 前 | 0

已回答
How to remove the horizontal line from my NMEA plot ?
With no file or other information, the problem may be that there is a common value (possibly 0) that separates segments of the f...

3 days 前 | 0

| 已接受

已回答
i have a syntax error in this expression : Vs+K*(C/(C-(u(1)*u(2)))*u(1))+R*u(1)-A*exp((-B/C)*u(1)*u(2))
Checking it with the Symbolic Math Toolbox, it appears to be correct. The only suggestion I can offer is to use element-wise op...

3 days 前 | 0

已回答
The numbers do not appear in standard format despite the writing (format shortG)
One option is to use string arrays — format shortG Mf=6.480554950317725e+03; Cp_sea=3.976; t_out=100; t_in=25; Qu=Mf*Cp_s...

4 days 前 | 0

已回答
What does this means?
It returns the elements in from rows 1 and 3 in columns 1 and 2 — G= [ 1 2 3; 4 5 6; 7 8 9]; H= G([1 3], [1 2]) .

4 days 前 | 0

| 已接受

已回答
ytickformat('percentage') not working with latex interpreter
This: ytickformat('$%g \\%%$') seems to work — figure(1) plot(1:100) ytickformat('percentage') figure(2) % This is th...

4 days 前 | 0

| 已接受

已回答
Periodogram of my audio file gives magnitudes only below zero
That you can hear it simply means that the sound card is scaling it and amplifying it. (I have no idea what the actual amplitud...

4 days 前 | 1

| 已接受

已回答
Transform matrices to XYZ
Something like this should work — [Lat,Lon] = ndgrid(lat,lon); LatLonDepth = [Lat(:) Lon(:), depth(:)]; Since I do not know ...

5 days 前 | 0

| 已接受

已回答
How can I open an Oxfor Instrument Pulsar .fid file in MATLAB?
Use zip or a non-MATLAB version of it to create a zip file that encloses the file you want to read, then upload it here. I hav...

5 days 前 | 0

| 已接受

已回答
Separate time series data in Individual Months
It’s not necessary to determine the beginning and dne of each month to separate them. This approach uses the ymd function wit...

6 days 前 | 0

| 已接受

已回答
Plotting X,Y,Z Data
With a bit of help from accumarray, it is possible to separate the traces so that there are no connecting lines — Matrix = rea...

6 days 前 | 2

| 已接受

已回答
How to merge plots from different scripts
I do not see the attachment. However the easiest way mightr be to save the data from each script to .mat files, and then load...

6 days 前 | 0

| 已接受

已回答
Is it possible to calculate variating signal frequency?
Theere are likely several ways to analyse this. One option is to use findpeaks to get the distances between peaks. Another i...

6 days 前 | 0

| 已接受

已回答
When using xline, would it be possible to have the text in one color and the lines in another color?
Doing that in one pass is likely not an option, since there is no way to independently control the text colour. However colouri...

6 days 前 | 1

| 已接受

已回答
How to add different texts in xline, when using arrayfun ?
Perhaps something like this — fig = figure(); ax = axes(fig); ax.XTick = 1:14; dy = ["S","S","M","T","W","T","F"]; hxl = ...

6 days 前 | 1

| 已接受

已回答
Plot shows markers, but no lines, no matter what is being plotted
The code is also being run in R2023a, since that just released. If you are using the pre-release version, consider downloading ...

7 days 前 | 0

已回答
Compare two CDF distributions
I am not sure that either of those tests would be appropriate for these data. A1 = readmatrix('https://www.mathworks.com/matl...

7 days 前 | 0

已回答
Problem adding text to plot, background color doesn't work properly
The line does not through the label. However it is necessary to specify the label in the xline call — xl = xline(0.5,'-','X-L...

7 days 前 | 0

| 已接受

加载更多