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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How can I know which ditribution is appropriate to fit on the generated histogram? and, How can I do that?
I would use the histfit function, then if the fit appears to be acceptable, use the fitdist funciton to estimate the parameters....

約4時間前 | 0

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Create a 3D array by month and other by seasons from a 3D array in days
I am not certain what you want, however it is relatively straightforward, although I do not understand the ‘84’ and what exactly...

約13時間前 | 0

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Can MATLAB plot hypergeometric functions?
I do not understand what you need to plot because I do not understand your notation, however the Statistics and Machine Learning...

約19時間前 | 0

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Error in FFT calculation
The value for ‘L’ is 7500 and for ‘L1’ is 601. If you change: P21 = abs(Y1/L1); to P21 = abs(Y1/L); you will get the ex...

約20時間前 | 1

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Lorentzian fit for defined peak
First, locate the peaks using findpeaks or islocalmax to get the peak values (amplitudes) and locations. The findpeaks function...

約20時間前 | 0

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How to simulate thermal noise altering a signal at various sample rates?
Thermal noise or pink noisse is classically described to have an amplitude spectrum proportional to , where is frequency. T...

1日前 | 0

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Need help on how to CREATE a text file in matlab?
‘Do I use fopen or table function?’ It depends on what you want to do. If you have a numeric array with column text headings, ...

1日前 | 0

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Loading and Plotting .mat file
If you want to plot the ‘wl’ field in each one, this works — Files = dir('*.mat'); figure tiledlayout(3,3) for k = 1:nume...

1日前 | 0

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Why derivatives using matlab symbolic for a simple fuction produces different results?
They both produce the same results when I run your code — syms x y %define function z=x+1i*y; theta = angle(z); Ig1=exp(-t...

1日前 | 0

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Continuous vs discrete time
It is difficult to follow what you are doing as you describe it. It might be best to use the Control System Toolbox functions i...

2日前 | 0

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How do I make a 3D surface from table data?
Use the scatteredInterpolant function to generate the ‘Z’ matrix — T1 = readtable('Table Matlab surface.xlsx', 'VariableNaming...

3日前 | 1

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Cannot extract real or imag part of a function
You are taking the real and imag parts of a function handle. It is necessary to evaluate the function handle first. Try thi...

3日前 | 1

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toggle percentual from matrix
Perhaps this — per=5; a=magic(4) apr = a*(1-0.05) % 95% Of The Value apr = a*0.05 ...

3日前 | 1

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Why I knock into a error when I want to get data from my double?
In ‘PCI1’ you are referencing ‘R’ however you are not passing it to ‘PCI1’ as an argument. Perhaps this — R = [[1 0.9954 0...

4日前 | 0

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Unexpected flat surface with surf command
I do not completely understand the problem, however: [X, Y] = meshgrid(sort(x), sort(Dp_values)); could solve the problem. ...

4日前 | 0

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4 equation 2 solution
Since ‘Phi’ and ‘L3’ are not defined, I created them (and ‘Alpha’) as parameters to be estimated hiere. I am not certain wh...

4日前 | 0

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for loop with fminsearch
There is a typographical error: for i=1;100 ↑← HERE Change that to a colon and it works — %I couldnt make array v...

4日前 | 0

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How do use the annotation function to annotate specific x-values on my graph?
I wrote a couple anonymous functions recently to transform (x,y) coordinates to normalised coordinates for just this purpose. ...

4日前 | 0

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Can't get symbolic numbers.
The sympref function should work, specifically: sympref('FloatingPointOutput',false); or: sympref('FloatingPointOutput','de...

4日前 | 1

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Combining multiple matrices into a single vector
A single vector is not possible, however a 3D array is with the cat function — T1 = [2 3; 4 2]; T2 = [1 7; 9 ...

5日前 | 0

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How can I change an entire column of dates into datetime format?
It appears to be UCT (or GMT in 1940). Perhaps this (the 'InputFormat' descriptor must match the format of the string you wan...

5日前 | 0

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How to stack-up multiple cases in z axis?
clc clear x(1) = 0 ; y(1) = 0 ; zm = NaN(2,200); multiplier = 50 ; figure(1) hold on for i1 = 1:2 multi...

6日前 | 0

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How to fill color between two curves?
If you only want the region between the curves before or after they cross, use ‘logical indexing’. Try this — % clc % clea...

6日前 | 0

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How to correctly do a Student Test for atmoshperic data
I’m not certain what you’re doing. I would use ttest2 on the filtered and unfiltered events themselves (since that is how ttest...

6日前 | 0

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How to edit y-axis scale in pop_spectopo function to log power spectral density 10*log10(uV^2/Hz)
This ‘10*log10(uV^2/Hz)’ is the same a dB/Hz. Thi is the same as the units of the ‘pxx’ outputs of the pwelch and periodogram f...

6日前 | 0

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nonlinear regression for multiple variable parameter
Your code works. The only change required was to create the ‘pressure_Keq’ matrix as the independent variable and then change ‘...

7日前 | 1

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I need help graphing a function.
It probably should be a decaying sinusoid. The problem is that it decays too fast. Decreasing the magnitude of ‘t’ helps to ...

7日前 | 0

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Find least frequent value in an array
One approach — H = [1 1 2 2 3 3 4 5 5 5]; [Hu,~,uidx] = unique(H, 'stable'); [Out,idx] = min(accumarray(uidx,(1:numel(uidx))...

7日前 | 0

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Convert array of numbers to an array of padded strings
Use the compose function — stanums = 7:12; stastrings = compose("%02d", stanums) Note the format descriptor string. .

7日前 | 0

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How to filter a certain range of values
I am not certain what you mean by ‘filt’ since I do not know if you want to keep those values or exclude them. M1 = readmatr...

7日前 | 0

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