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Star Strider


11,243 2012 年以降の合計貢献数

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.

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Trendline with Slope of zero
see if the lsline (link) or similar functions (linked to in and at the end of that page) will do what you want.

約2時間 前 | 0

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Frequency analysis of circadian data
I believe your table and mine are probably similar. See if: Lidx = abs(CoreTempData.tempFiltAverage - mean(CoreTempData.tem...

約3時間 前 | 0

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time string into seconds
See if the seconds (link) function will do what you want. Your times need to be a duration (link) array.

約6時間 前 | 0

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How to correct ode45 errors?
First, do not use global variables! Second, you need to declare your function correctly, and pass the extra parameters to it...

約10時間 前 | 0

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symbolic definition disabled in MATLAB r2017b
Run these lines from your Command Window or a script: restoredefaultpath rehash toolboxcache and see if that fixes the pro...

約11時間 前 | 0

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Convert sound of heart beat into beats per minute
I worked on that for a while, including attempting wavelet denoising, without success. The heartbeats are easily audible, howev...

約21時間 前 | 0

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How to define and plot a piecewise time dependent function
The double logic operators (&&, ||) are short-circuit operators and operate only on logical values. They will not work in your ...

約21時間 前 | 0

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I keep getting the error "subscript must either be real positive integers or logicals" even when I place an 'if' statement
‘I thought that my ' if ' loop would have solved that issue, but it does not seem to be working.’ It is working in the if block...

1日 前 | 0

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Error in fmincon-NaN values
The usual method MATLAB toolboxes use to deal with NaN values in data is to omit the entire row that has a NaN value in any colu...

1日 前 | 0

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bar graph doesn't show whole data
Try this: bar(imp_2d_7_f) xtv = get(gca, 'XTick'); xtl = {'ALGO','ALIC','ALRT','ANKR','BRAZ','CAS1','CCJ2','CKIS','MAS1','MA...

1日 前 | 1

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Parameter estimation in ODE45.
I am not certain what you are doing. One approach is in Monod kinetics and curve fitting (link).

2日 前 | 0

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Changing the refline name in the legend
Try this: figure scatter(rand(1,10), rand(1,10), 's', 'DisplayName','Validation') hold on scatter(rand(1,10), rand(1,10), '...

2日 前 | 0

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Index exceeds the number of array elements (1)
This line is throwing the error: RMIN = RMIN(NX*NY); Since ‘RMIN’ is a scalar, it seems that you might be missing a multiplic...

2日 前 | 1

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Is it possible to assign the constant value of a function handle to a variable?
If you want to use the feval (link) function, yes: g = @() 1; B = feval(g) producing: B = 1 There may also be other...

2日 前 | 1

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Matrix multiplication and addition
If I understand correctly what you want to do, this works: Result = sum(b(1:4,:) * a(:,6)); producing: Result = 760 ...

2日 前 | 0

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Labelling peaks on a graph
Use the findpeaks (link) or islocalmax (link) function, and the text (link) function.

2日 前 | 1

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Surface plot form 1d data
We have absolutely no idea what result you are expecting. Try this: %% 1D line plot x = linspace(0,1000,1000); C = @(...

3日 前 | 0

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Ignore text in a txt file
It depends on the function you are using to read them. In the textscan (link) and other functions that use textscan, they are ...

3日 前 | 0

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Having trouble solving system of equations
Use the correct syntax for solve, and use the vpa function to get numeric results: syms c1 c2 [C1,C2] = solve(c1==18*c1-1200+...

3日 前 | 1

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help with ode solvers non-linear ode 1st law of thermodynamics
I let the Symbolic Math Toolbox have its way with your equations: syms w Ao q Ap Pa k L g t y(t) P(t) m(t) V c Y Dy = diff(y...

3日 前 | 0

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How to peform multiple paired-t tests
You need to be very careful doing multiple comparisons. See the documentation for this multcompare (link) function (there are t...

3日 前 | 1

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Displaying for loop iterations as a matrix
I am guessing here: Rv=0.6:0.05:0.95; for k1 = 1:numel(Rv) R = Rv(k1); A=[(1.5*R-1.59), 0.5*R, 0; 0.5, -21.75, 0; 0...

3日 前 | 0

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Can't run an equation in a function that works in a script
Try this: function [y] = test(x) c1 = 0.5176; c2 = 116; c3 = 0.4; c4 = 5; c5 = 21; c6 = 0.0068; % equation 1 lamdai1 z...

3日 前 | 0

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What is the solution for below code? It shows error
I suspect the error refers to this assignment: [,F,T,P]= spectrogram(y,NW,[],[],fs); (that also seems to be missing an output...

3日 前 | 0

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3D plotting in Matlab
If you are plotting vectors, use the plot3 (link) function. Other possibilities are scatter3 (linked to in the plot3 page), and...

3日 前 | 0

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Update Matlab's font list
There are a few font utilities in MATLAB. See the documentation on the listfonts (link) function, and links to related function...

3日 前 | 0

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Integration is not evaluated inside a function file
In the MATLAB Symbolic Math Toolbox, the correct syntax for your int call would be: q1 = int(FF,b,0,a1) However, I do not und...

3日 前 | 1

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Why am I not getting an array of answers from this operation?
Because you coded it with incorrect syntax. Try this: t=linspace(0,3.5,1000); u=4*exp(-0.45*t).*sin(4*t + 0.5); figure ...

4日 前 | 0

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Plotting 1402 data points for a voltammogram
‘... when i try 'plot(x,y)' it says I have too many input arguments ..’ You probably have a variable (or your own function) t...

4日 前 | 0

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How to add header to a table?
Use the 'VariableNames' (link) name-value pair with your ‘header’ cell array.

4日 前 | 0

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