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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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已回答
add arrow above textbox
I wrote some simple functions to transform (x,y) coordinates to normalised values to use with annotation functions. I added t...

2 hours 前 | 0

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已回答
Can MatLab provide a variable in an answer?
If you have the Symbolic Math Toolbox, that may well be possible. Without knowing more, I doubt that would otherwise be possi...

21 hours 前 | 0

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How to calculate Average without receiving 'Inf' as a result.
Uz = unzip('Matlab Copy.zip') T1 = readtable(Uz{1}, 'VariableNamingRule','preserve') NonZeros = nnz(T1{:,1}) NrInf = nnz(...

1 day 前 | 0

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how to get the envelope of oscillating signal
Perhaps this — LD = load('data.mat') t = LD.t; il5 = LD.il5; Data = rmmissing([t il5]); t = Data(:,1); il5 = Data(:,2); ...

1 day 前 | 0

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已回答
plotting multiple distributions on one graph
I am not certain what your data are, so I will create some. A = randn(20, 1000); A = (A - min(A,[],2)) + 1; A = A .* 15./...

2 days 前 | 0

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已回答
trying to make sure my data has been imported correctly as a 4D matrix
Using readtable, your data imports as a (104x290) table. (There aree no variable names.) The matrix loads as a 4-dimensional...

2 days 前 | 0

已回答
How to find the mean of a matrice based on a value in another matrice
This returns all of the monthly means for all the months — LD = load('data_x.mat') T1 = table(LD.month, LD.sa, 'VariableNames...

2 days 前 | 0

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已回答
plot bar graph based on element type in matrix
Do you want all of them, or just the last row (t=10)? This does both — A = randi(3, 20, 100) TallyAll = accumarray(A(:),...

3 days 前 | 0

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已回答
Find the indices of numbers that occur first
That is not an appropriate find call. The syntax is incorrect. X = randperm(9) % Unique Rand...

3 days 前 | 0

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How to fill in missing data?
If you have R2016b, use the fillmissing function (introduced in R2016b) — T1 = array2table(randi([0 9],10,5)) ...

3 days 前 | 0

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shifting a column in Matlab of CSV
The ‘Var1’ (first column) values are not exactly -1 and +1 so you have a choice to make. Either keep them as such (so after add...

3 days 前 | 0

已回答
set the tick format of y axis
In the Numeric Ruler Properties documentation, see the section on Exponent. x = linspace(0, 1); y1 = sin(2*pi*x); y2 = cos...

3 days 前 | 0

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已回答
Non-integer value in for-loop
One approach — iv = 0:.1:1; for i = 1:numel(iv) H(i)=10*iv(i) ; end H .

5 days 前 | 1

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已回答
Is there a way to determine an equivalent circuit for Nyquist diagrams (I have the data set) using Matlab (or Simulink)?
I am not certain what you want witth respect to an equivalent circuit. I believe you intend circuit synthesis or circuit realis...

6 days 前 | 2

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Interpolate pairs of values from matrix
It would be helpful to have at least a representative sample of your data. The reason is obvious from this experimeent — [X...

7 days 前 | 0

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Caucer fraction expansion fraction expansion for filter synthesis
The Cauer decomposition is useful. Your post is only the second time I’ve encountered a question about it here. The residue fu...

8 days 前 | 0

已回答
Bandpass filter Transient Response. How to get rid of it?
Without your sampling frequeency, it is impossible to desingn the filtere and therefore difficult to figure out what the problem...

8 days 前 | 0

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已回答
Help with time variation graphs versus time
T1 = array2table(["2010/01/01" "00:00" 0.109864 2.04021 "2010/01/01" "00:00" 0.122071 2.8937 "2010/01/01" "00:00" 0.134278 2...

9 days 前 | 0

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auto completion does not work
Tthere are two options that I can offer — The first is to re-start MATLAB and see if that fixes it. If it does not, the sec...

9 days 前 | 0

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Optimisation of three function in two variables
To begin with, you need to parameterise the functions so that ‘x’ and ‘y’ are two elements in the same vector. Your functions...

9 days 前 | 1

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已回答
having the same problem about the arrays
My guess is that you actually want to calculate this: daily_savings(i + 1) = O_Consumption(i + 1).*Cost(i+1); Multiplying by ...

9 days 前 | 0

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已回答
Why does the track2 function is not working?
Try this — [lati , loni] = track2(lat1,lon1,lat2,lon2,[],[],number); MATLAB function arguments are positional (except for the...

10 days 前 | 1

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已回答
Numbers on the middle of colorbar in MATLAB
It can be done using annotation objects (specifically textbox) however it is definitely a challenge. Try something like this...

10 days 前 | 0

已回答
Improving personal Fourier Interpolation Model
It is difficult to understand what you are doing, or the question you aree asking. I ran your code and it appears to work. ...

11 days 前 | 0

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已回答
Can't bring up matlab
Contact Support I doubt that any of us here could help you with this. Be sure to mention your operating system in your message...

11 days 前 | 0

已回答
how to draw a peak line
If you have the Signal Processing Toolbox, use the findpeaks function with an approopriate valuee for 'MinPeakProminence' so tha...

11 days 前 | 0

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已回答
Extend only two lines on a plot
One option is to extrapolate the two curves. That then changes these lines: plot(Vturb,rR) plot(Vlam,rR) to these modified...

13 days 前 | 1

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已回答
making import function for files that have different datetime format
I am not certain how you could use this in your import options call, however one approach could be this — DC = {'9/27/2024 8:...

13 days 前 | 0

已回答
help to plot cross section
The best you can do is probably to use the colorbar label — x = linspace(0, 20).'; y = linspace(0, 70).'; [X,Y] = ndgrid(x, ...

14 days 前 | 0

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已回答
Converting result after substituting numerical values into symbolic expression not possible. Matlab creates new symbolic variables by complex symbolic expression.
The are sub-expressions. You can keep them from appearing by using: sympref('AbbreviateOutput',false); So here: syms T...

14 days 前 | 0

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