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Star Strider


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14 878 total contributions since 2012

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

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Answered
Find the gradient using matlab code
You can do exactly what you want in either base MATLAB or using the Symbolic Math Toolbox. Please search the documentation us...

ungefär 2 timmar ago | 0

Answered
How to set the grid of the right yyaxis?
Another option is to create new right-axis tick positions to match the tick positions on the left: x1=[200, 300, 250, 520, 340...

ungefär 2 timmar ago | 0

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Answered
Concatenate signals ( sine wave and a line )
You are attempthing to vertically concatenate them. Use commas (,) instead fo semicolons(;) and it will work. Commas horizon...

ungefär 4 timmar ago | 1

Answered
Zone identification on curve
Try this: D = load('identification.mat'); var = D.var; x = 0:numel(var)-1; varfilt = sgolayfilt(var, 5, 271); Lmx = ...

ungefär 5 timmar ago | 2

| accepted

Answered
Waveform Segmentation Using Deep Learning: Error on getmask
See if clicking on the Help radio buttion in the upper right corner of the MATLAB window, then scrolling down to Signal Processi...

ungefär 16 timmar ago | 0

Answered
How to use custom X values for the findchangepts function?
The findchangepts function outputs the change points as a vector of integer indices. To put them in the context of your data,...

ungefär 20 timmar ago | 0

Answered
How do I pick specific rows of a txt file and plot data?
Try this: D1 = readmatrix('collagen405.txt', 'HeaderLines',14); x = D1(:,1); y = D1(:,2); figure plot(x, y) grid title...

ungefär 21 timmar ago | 0

Answered
ODE45 must return column vector
Try this: I=[80,131,189,270,320,407,450,530,620,686,740,900,1095]; t2=[74,29,21,12,8,5.7,4.4,3.6,2.1,1.8,1.5,1.0,0.7]; a=....

ungefär 22 timmar ago | 0

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Answered
How to plot timeseries graph
For the data posted, one approach: T1 = readtable('mar2014ctd.xlsx', 'VariableNamingRule','preserve'); VarNames = T1.Properti...

en dag ago | 0

Answered
Plotting a 3D surface model with colours from excel
I am not certain what result you want. One option: T1 = readtable('dagslysdata.xlsx', 'HeaderLines',3); Xv = linspace(min(...

en dag ago | 0

Answered
I'm trying to plot this equation, if anyone can help
Take the square root of both sides, and plot: y = +sqrt(4*a*x); y = -sqrt(4*a*x); That’s how I would do it, anyway.

2 dagar ago | 0

Answered
Compass of complex matrix, getting "dot indexing is not supported for variables of this type."
See if this does what you want: c = compass (SOUSLEDNA); c1 = c(1); c1.LineWidth = 2; c1.Color = 'r'; .

2 dagar ago | 1

| accepted

Answered
Boundary line for contour
Sometimes, a bit of absolute creativity (‘thinking outside the contour) is necessary. I first did a meshc plot of your matric...

2 dagar ago | 1

| accepted

Answered
ODE45; Length of initial conditions vector not accepted
See if this does what you want: function ddx = odefcn(t,v,W,k,rho,S,R,m,P,c_Do) A_0 = (4.654*W*cos(t)*k)/(rho*S) - W*sin(...

2 dagar ago | 0

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Answered
Problems using a Butterworth filter instead of a bandstop to filter frequencies.
You are not designing the filter correctly. Try this instead: lfreq = 170; ...

2 dagar ago | 0

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Answered
How to put a numerical value inside a Bar graph?
Change the text call to: text(1:length(Y),Y/2,num2str(Y'),'vert','bottom','horiz','center'); % values position That should w...

2 dagar ago | 0

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Answered
How would I simulate this in Matlab?
I would approach it as a compartmental modeling problem. Plants grow at a specific rate, however some will die (for whatever ...

3 dagar ago | 0

Answered
How do I produce graphs from 'for' loop?
Use the hold function. figure hold on <LOOP> hold off If you are plotting single points in each loop iteration (not possi...

3 dagar ago | 0

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Answered
tf2ss not returning the correct State Space form
The result is correct. The exact configuration doesn’t matter, so long as all the matrices and vectors work together (and produ...

3 dagar ago | 0

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Answered
How do I generate a polynomial from roots that are repeated?
Iinteresting. I would expect no repeats, and complex conjugate values instead. Try this: rts = [ -0.7437 - 1.4178i ...

3 dagar ago | 0

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Answered
add standard deviation value and text on bars
When I try to run your code, I get: Unrecognized function or variable 'X'. In its absence, try this: Y=[0.9 0.83 0.700;1.58...

3 dagar ago | 1

Answered
ODE symbolic result plotting with fplot()
I am not certain what the problem is with the original function. If you simplify it first: phi = vpa(simplify(phi, 'Steps',...

3 dagar ago | 0

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Answered
solve 3 order differential equations
Without seeing your ODE solver call, I cannot determine what the problem is. This runs without error for me (in R2020b): ...

3 dagar ago | 0

Answered
How can I mark wheezes on a plot?
Try something like this: wheezes = sort(randi(100, 10, 1)); % Create Data ws...

4 dagar ago | 1

Answered
Fprintf modification in matlab
Those are all preferences. See the Fonts section. There is no other way (to my knowledge) to change them. Also, I poste...

4 dagar ago | 0

Answered
Need help.... How to plot sequences
The mod function and the colon,: operator are your friends!

4 dagar ago | 0

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Answered
sampling time causes scaling of simulation results.
It may be appropriate to specify the the sampling time in the ss call. See Create Discrete-Time State-Space Model. Another p...

4 dagar ago | 0

Answered
How can we do for following fprintf formating
Try this: fprintf('\tx%c\n', char(178)) producinig: x² .

4 dagar ago | 0

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Answered
How to plot point clouds and linear regression line in the same plot?
Use the hold function.

5 dagar ago | 0

Answered
How to Solve an Equation with an Integral for the Integral Range Parameter?
The gammainc function does not take complex arguments, so this is likely the best you can hope for: F = @(S) S - 0.01 * gammai...

5 dagar ago | 0

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