Error while integrating bessel functions
The problem is: Q = @(s) 2*(1 - (nu.^2))./(s.*E).*(1./(a(s) + b(s))); ↑ ↑ ← HER...

4 días ago | 0

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EEMD(ensemble EMD)
I am not absolutely certain what the problem is, because ‘does not work’ can mean just about anything. Note that according to...

4 días ago | 0

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conditioning array with complex number
This can probably be combined into fewer actual lines. I kept them separate to demonstrate the approach — A = complex(rand(...

4 días ago | 0

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frequency of letters in English message
One approach — plain= 'my name is samah samir and i am engineer'; ltrs = double(plain); ltrs = ltrs(ltrs>32)-double('a')+1; ...

4 días ago | 0

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Change "matrix" to a scalar
If you want to square the elements of ‘var’ use element-wise exponentiation (the ‘dot operator’). var=var*(1-(1/(i-1)))+i*(sum1...

4 días ago | 0

How to set scale range for a contour?
The x-axis goes from 1 to 2 because the contour plot is of a (117x2) matrix. That also explains the range of the y-axis. d...

5 días ago | 0

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How to make constant to 1 in power function in curve fitting toolbox
Use fminsearch rather than linearised polyfit for this. x1=[6.71214E-05 0.00112676 0.047319082 0.142706219 0.273947664 0.4...

5 días ago | 1

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How to use create table name variables in loop?
I am not certain that I understand what you want to do. Perhaps — randomdata = randn(33,10); NrCellArrays = fix(size(rando...

5 días ago | 0

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How to code and build a smaller array and 2D-plot charged particles to make clusters (as they are linked via indices) using charge, no of lone pair of electrons & bond order?
I am not certain what you want. I have no idea what ‘collecting the indices’ implies. Try this — T1 = readtable('https://w...

5 días ago | 0

How can I plot an histogram?
Try something like this — number_of_events=[30.60, 32.30, 32.30, 32.30, 32.30, 2.60, 12.60, 32.30, 32.30, 9.70, 25, 13.20, 1...

6 días ago | 0

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What equivalent MATLAB commands plots PDF of data like 'hist' command plots histogram of data.
See if the histfit function does what you want. .

6 días ago | 0

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How can I make MATLAB shade the area of the virtual intersection between two lines?
Both fill and patch require a closed region — x1 = ones(1,10); y1 = ones(1,1000000); n1 = 10^10:10000000000:10^16; T1 = 10:...

6 días ago | 1

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stop execution of code to check results
I would just display it instead — if i == 100000 fprintf('Parameter = %f at iteration %d\n', Parameter, i) end Also...

6 días ago | 0

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simulate free fall project, ode45, using reynolds no to get drag coefficient, recursive problem
The NaN values are the result of 0/0 operations, and when that occurs in the first integration, it propagates through all of the...

6 días ago | 0

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Default varm function not working
The function is part of the Econometrics Toolbox, so to use it, the Toolbox must be licensed and installed. If it is already ...

7 días ago | 0

How can I plot single points, each having a different color, of two arrays(as x, and y) using a for loop?
See the documentation on scatter to see all its optional arguments and features. x = rand(12,1); y = rand(12,1); figure...

7 días ago | 0

How can I extend the data in the x direction.
Try this — y5000 = feval(f, 5000) I cannot run the posted code (no data) so I am posting this as UNTESTED CODE. It shoul...

7 días ago | 0

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how to store array
Try something like this — xv=1:5; for k = 1:numel(xv) x = xv(k); A=[5*x 0;2*x^2 1]; B=[0;2.55]; Y(:,x)=...

7 días ago | 0

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How to replace diagonal of square matrices within a cell array?
The easiest way is to subtract the diagonal of each matrix from the matrix — C = {rand(4); rand(4); rand(4)} Cr = cellfun...

7 días ago | 0

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How do I fit a gaussian to a bar plot and extract the variance of the gaussian?
One approach — x=[8,11,8,10,8,21,26,33,28,8,17,7,4,10,12]; y=1:15; [fitobject,gof]=fit(y',x','gauss1'); figure bar(y,x) ...

7 días ago | 0

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why my matlab didn't plot anything?
The plot call plots points here, so it is necessary to plot markers. The plot funciton draws lines between points, so its argum...

7 días ago | 1

How to extract certain values from text file to find average of the group of numbers?

7 días ago | 0

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Can only find one double angle formula of cos(2x).
Experiment with various options to get at least one more identity — syms x f(x) = cos(2*x) f1 = expand (f) f2 = rewrite(f,...

8 días ago | 0

ODE solver (45) giving two solutions (i.e. two plots) for an ODE! How do I plot only the one I need?
Use element-wise division H2= (k^2*(V+Y(:,3)+Y(:,4)))./(3-((k^2/2).*Y(:,2).^2)) ↑ ← HERE then ‘H2...

8 días ago | 1

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steady state responce of LTI system
Try this — A=[-0.0295 0.0478 0 -9.81;-0.1777 -1.4411 120 0;0.0005 -0.033 -1.5345 0;0 0 1 0] B=[0;-12.81;-6.59;0] C=[0 0 0 ...

8 días ago | 0

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How do I solve this error?
The value of ‘Ea’ in the exponential call makes the integral effectively zero of all the values of ‘V’. LD = load('V[1].mat...

8 días ago | 0

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adding each element of a matrix by previous elements of that row.
Try this — a = [1 2 3;4 5 6;7 8 9] acs = cumsum(a,2) b = acs ./ (1:size(a,2)) ratsb = rats(b) Experiment to get differ...

9 días ago | 1

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How do I only highlight the decreasing portion of the green in the plot with the find function?
The vector in the plot image (or the code to create it) are not available, so I substituted my own. This should get you star...

9 días ago | 0

Arrow of a vector ( r, theta) from a point (x,y).
One approach (using the quiver function) — x = rand y = rand r = rand theta = 30; ...

9 días ago | 2

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