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Find/return value from each row in a big matrix that corresponds with a condition/value
Wanted = nonzeros(x .* (abs(A - c) < 1e-2))

environ 6 ans il y a | 0

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Undefined function or variable 'imnlmfilt'
It requires Image Processing Toolbox and a valid license for it. Contact your IT department in your University to get the licens...

environ 6 ans il y a | 0

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Solving symbolic trig equation in terms of theta, using "sol."
The solution is returned in a struct so to access it you need to use the dot. It has occurred that there are two solutions?

environ 6 ans il y a | 0

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Réponse apportée
How to convert a char into double?
sscanf(f,'%d')

environ 6 ans il y a | 0

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lines through markers on legend
x = -10 : 0.1 : 10; y = cos(x); plot(x, y, '--o', 'MarkerSize', 5) hold on y = sin(x) plot(x, y, '--d', 'MarkerSize',...

environ 6 ans il y a | 1

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How to create function handle with matrix inputs, vector output?
FCN = @(x) x(:, 1) + x(:, 2); sum(in, 2) % ??

environ 6 ans il y a | 0

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Réponse apportée
"str2sym" delete the element wise operation
doc matlabFunction

environ 6 ans il y a | 1

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Réponse apportée
How to replace multiple elemets at particular index in vector ?
a(3 : 2 : 7) = [.7, .1, .9]

environ 6 ans il y a | 1

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Réponse apportée
extract num and den from matrix transfer function
Use it inside the loops, preallocation is recommended for the variables.

environ 6 ans il y a | 0

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How can i get the last element of a maxium with the help of findpeaks?
<https://www.mathworks.com/help/signal/ref/findpeaks.html#bufhxsk-2> It states: _“For the flat peak, the function returns ...

environ 6 ans il y a | 0

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Error 'Array indices must be positive integers or logical values.' when the number of indices is large
In this case it’s probable that b has elements less than 1 and greater than 32. Outside_bounds = nnz((b < 1) | (b > 32)) % t...

environ 6 ans il y a | 0

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Réponse apportée
fzero or fplot function
The anonymous function should perform element wise operations (warnings for fplot) and (errors for fzero).

environ 6 ans il y a | 0

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How parentheses effects multiplication with pi ?
In the first the order of operation is from left to right. In the second the order of operation is inside the parenthesis and...

environ 6 ans il y a | 0

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How do I delete my account?
Contact MathWorks Support Team.

environ 6 ans il y a | 0

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Réponse apportée
how to label strings in an array with an ID
T = cell2table(StringID(:, 2)); T.Properties.RowNames = StringID(:, 1); Wanted = T{num2cell(tc), :}

environ 6 ans il y a | 0

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Error while plotting matrix of complex numbers
plot(real(sub), 'r-', imag(sub) ,'b*');

environ 6 ans il y a | 0

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Variable for loop storage
low = A(lowPs, :)

environ 6 ans il y a | 0

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Variable for loop storage
low = cell(numel(lowPs), 1); for k = 1 : numel(lowPs) B = A(:,1) == lowPs(k); %%row numbers in A where A(:,1) that co...

environ 6 ans il y a | 0

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Réponse apportée
random matrix with a given number of specified elements
v = [repelem(1, 5), repelem(0, 4)]; Wanted = v(reshape(randperm(numel(v)), 3, []))

environ 6 ans il y a | 1

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How can I randomize the order of a matrix of images
Filenames = compose('image%d.png', 1:4); Filenames(randperm(numel(Filenames))) % ?

environ 6 ans il y a | 0

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Using Surf function with matrix
surf(C)

environ 6 ans il y a | 0

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Plotting in 3d
doc fsurf

environ 6 ans il y a | 0

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wrong differential equation solution
a1 = matlabFunction(simplify(sol)); a = matlabFunction((1/80)*(36*exp(-t)-35*cos(t)-cos(3*t)+125*sin(t)-3*sin(3*t))); t ...

environ 6 ans il y a | 1

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Livescript: equation number
No, the workaround would be to use section titles.

environ 6 ans il y a | 0

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Why does the second matrix start with zeros?
MATLAB assigns zero to the previous indices, for better understanding: clear a a(11) = 1; % now you will see elements fro...

environ 6 ans il y a | 1

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Problem about rounding to 0
w = u_1 * u_2 - u_3 * sym(u_4) Click on the tag floating-point.

environ 6 ans il y a | 1

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How can I get maximum and minimum value with sym variables
Use matlabFunction() and fminbnd() to find the minimum value of that function and to find the maximum extreme use negative sign ...

environ 6 ans il y a | 0

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Sorting a matrix using it's index
Asort2 = A(sub2ind(size(A), repmat((1:size(A,1)).', 1, size(A,2)), idA))

environ 6 ans il y a | 1

Réponse apportée
How to reshape matrix 2 columns by 2 columns
First = matrix(:, 1:2:end); Second = matrix(:, 2:2:end); Wanted = [First(:), Second(:)]

environ 6 ans il y a | 0

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SUBS function not working properly - R2020a
double(val) %or vpa(val)

environ 6 ans il y a | 0

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