Filling a matrix without for-loops and ifs
Check out the sub2ind( ) function: https://www.mathworks.com/help/matlab/ref/sub2ind.html?searchHighlight=sub2ind&s_tid=doc_src...

29日 前 | 0

Vectorizing evaluation of cell array of functions
Not sure this will be any faster since the loop is just hidden, but you can try this: output = arrayfun(@(x,y)x{1}(y),funcell,i...

29日 前 | 1

Wondering if you have any merchandise for sale cause I'd love to look like a part of the MATLAB team 😀

29日 前 | 0

Is there a matlab function similar to numpy.spacing
From the numpy.spacing doc: "It can be considered as a generalization of EPS ... there should not be any representable number ...

30日 前 | 3

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What is the best way to insure that all of my functions are using the same constant values?
I use a function that returns a structure, containing the values and the unit descriptions. Your code can either pass this stru...

30日 前 | 3

Separate out every fourth element of a Vector
V = your vector result = V; result(4:4:end) = []; % remove every 4th element The above syntax with [] on the rhs is special ...

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How to extract the value of dydt from ode45 function
Why can't you just call your odefcn( ) function with your solution t and xSol vector elements as inputs (e.g., in a loop)? Does...

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How to make an assignment for my for loop?
This syntax with the curly braces next to SBOS means it is a cell array: SBOB{ whatever } But this syntax with the dot notatio...

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Write binary file in Matlab

how binary floating point to real decimal number representation ?
You can't use dec2bin( ) reliably for this conversion in all versions of MATLAB because it is limited by flintmax (see note at b...

Binary floating point Representation in Matlab
Did you try it? >> A=[ 0.1900 -0.0300 -0.1300 0 0.1500 -0.0700 0.0500 0.1600 -0.2500 -0.1900]; >> dec2bin(typecast(A,'uint...

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Find sum of elements in a cell along the columns
Is this what you are trying to do? (using the curly braces) y = sum([A{2,:,1}])

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Can somebody explain me this answer?
You are using linear indexing into "a". This matrix: >> 3*ones(2) ans = 3 3 3 3 When used as indexing, i...

Using 3D array to subtract row Q from row P
It is unclear what you really want. If you want the Euclidean distance squared between rows, e.g., rows 1 and 3, then just d =...

How to change radians into degrees?
Why are you using sym to find the angle? Just use atand( ) directly with the appropriate input. That seems to be the intent of...

I assign A = B; but I could not use A and B interchangeably
You are changing I_fted inside the loop. If you subsequently use it in another calculation within the loop, it would not be surp...

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matrix dimension reshape error
To solve your sizing issues, type the following into MATLAB: dbstop if error Then run your code. When the error occurs, your c...

Is it possible to 'clear all' variables except one?
Another method is the FEX keep utility: https://www.mathworks.com/matlabcentral/fileexchange/181-keep

MKL 2018 supposedly supports integer matrix multiplication. Can this feature be added to Matlab?
The main problem with matrix multiplication on integer types (int32, etc.) in MATLAB is that the operation result is ambiguous i...

Convert 0×1 empty double column vector to zero
Is this construct all you need? if( isempty(x) ) x = 0; end

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How to use randperm with minimum spacing between random numbers
Maybe something like this will suffice for your needs? p = b * randperm(floor(n/b),k) If n/b isn't an integer value, then ther...

How do you append to a matrix within a for loop when the matrices are unequal in size?
Maybe you could use a cell array. E.g., : D1 = cell(1,N); for a=1:N : D1{a} = C; end Then the first matrix...

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What is the best way to save to .csv without losing precision and with column headers?
Why are you using fprintf in a loop? Can't you do it all in one call? E.g., this for i = 1:length(x) fprintf(fid,'%f , %...

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Error: Too many output arguments.
Your function isn't coded to return anything. Try this: function timber_length = GET_NEAREST_LENGTH(length) Btw, "length" is t...

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write a function to translate a 3d object
You didn't write your function to return an output. Try this: function S = shift(S,dist,axis)

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Any function (dlmread, fscanf, etc) in any language (MATLAB, C, etc.) reading text numbers into floating point will have this is...

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function f(x)=xe^x
Take a look at this loop from your code: for j=1:length(x) y = (1/N)*(a+((j-1)*h)); % <-- This replaces y at each step ... it ...

Extending an order in a vector
One way: >> result = cell2mat(arrayfun(@(y)x*y-x+1:x*y,y,'uni',false)) result = 1 2 3 7 8 9 13 ...

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How to Run filename.mexw64 in command prompt
Assuming you are on a WIN64 system, call it just like any other function. E.g., my_result = filename(my_arguments); The filena...

Pass pointer to scalar variable in mex function
"... The only way I've gotten around this before is by making the scalar variable into a vector and just using the first element...