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BobH


Last seen: 5 dagar ago
27 total contributions since 2020

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Answered
How to match two arrays in Matlab
Is this what you are trying to get? Second column of B based on C matching A A = 1:10; B = [21 22;10 11;23 25;33 30;32 35;21 ...

18 dagar ago | 0

Answered
How to quickly find the column index of the last non-zero element in all rows in a sparse matrix?
reorderRow = arrayfun(@(X) find(A(X,:),1,'last'), 1:size(A,1)) reorderRow = 1 2 3 2 3

18 dagar ago | 0

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Answered
Help with extracting info from a listbox in a specific way
You can build a cell array using the row as the index, and each element of the cell array can be a numeric array of the column(s...

19 dagar ago | 0

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Answered
Replace string and then place it again
This is intentionally backwards from what you asked; adjusting it to start with all '#' is for you helpful: https://www.mathwor...

19 dagar ago | 0

Answered
Reordering string arrays if string is >9
sort_nat is powerful, and has helped me several times. An alternative for simple number/not-number values is straightforward f...

19 dagar ago | 0

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Answered
How to sum matrix of different size on Simulink? (R2019a)
The dimensions must agree, in MATLAB. Z = zeros(400,32); O = ones(1,32); Z+O; Error using + Matrix dimensions must agree....

20 dagar ago | 0

Answered
Using 'for loop' on a function call
If you want to iterate along x_min and x_max, you can use a single counter in your for loop for i = 1 : length(x_min) % both v...

20 dagar ago | 0

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Answered
Concatenating vectors based on list of variable names
c = cellfun(@eval, order, 'un', 0); r = vertcat( c{:} ); % horzcat if that's what you wanted, and all variables in order are...

20 dagar ago | 0

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Answered
How do I delete cell elements from a cell array?
function kmvsolve hw_i = {'K',5,2; 50,4,'v'; 70,'m',9 }; hw_o = physicsHW( hw_i ) end function out = physi...

24 dagar ago | 0

Answered
Why is my code messing up on this specific test case?
function out = lostAtSeaCucumber( vec, srch ) collected = ''; % temporary storage for names visited = zeros(size(ve...

24 dagar ago | 0

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Answered
How can I index a vector based on the vector's values?
V = [2 5 4 1 3]; R(1) = V(1); for i = 2:length(V) R(end+1) = V( R(i-1) ); end R % new vector R = 2 5 3 ...

24 dagar ago | 0

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Answered
Change Julian date read in from excel to a MM-dd-yyyy form and plotting
see https://www.mathworks.com/help/exlink/convert-dates-between-microsoft-excel-and-matlab.html and perhaps this old question w...

25 dagar ago | 0

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Answered
Importing txt files and using loops
Similar to Mario Malic but using regular expressions R = []; % init to empty fid = fopen('J94.txt','r'); t = fge...

26 dagar ago | 0

Answered
Shifting of 3D curve
You seem to be dividing the axis scale by 5. The same steps also apply to 'XTickLabel' ylabel = get(gca, 'YTickLabel') % ret...

26 dagar ago | 0

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Answered
Reduce MATLAB method startup time
I couldn't find a way to avoid the delay, but I use this to give the user a reason for the delay. It uses my specific situatio...

27 dagar ago | 0

Answered
for loop for switch case
would arrayfun work for your code? It would handle both x as a single number and x as a vector, setting 'a' to a single number ...

27 dagar ago | 0

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Answered
Updating a zeroized matrix with provided row vectors
Force(Nodal_Loads(:,1),:) = Nodal_Loads(:,2:4)

27 dagar ago | 0

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Answered
how can i deal with .mat file in Matlab?
See load It will add variables from the mat file to your workspace.

28 dagar ago | 0

Answered
Find and replace in a character array
See regexprep and remember that to get a single-quote it must be doubled up in the replacement string F='(B~C) + (~AB)'; rege...

ungefär en månad ago | 0

Answered
Storing the output of a program in a matrix
Do you mean like this? progA = @() 42; % return 42 for each invocation y = progA() y = 42 z = arrayfun(@(X) progA(),...

ungefär en månad ago | 0

Answered
Coordinates of a 3 by 3 by 3 array
yy=zeros(3,3,3); yy(1,2,3) = 1 yy(:,:,1) = 0 0 0 0 0 0 0 0 0 yy(:,:,2) = 0 ...

ungefär en månad ago | 0

Answered
How to shuffle matrix entries using MATLAB?
perhaps a modification based on the sample code showing use of perms?

ungefär en månad ago | 0

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Answered
Extract lines of a three dimensional matrix using an array of indices and NO for-loop
Use column 1 of m to select rows of r in the first >> r( m(:,1), :,1) ans = 1 0 2 1 1 Use column 2 of m...

ungefär en månad ago | 0

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Answered
How do I create a matrix from a file from reading the first row and then use that first number to control a "for" loop to build
MOHD AQUIB is on the right track, reading one data point first before the loop, but left out the part within the loop that conti...

ungefär en månad ago | 0

Answered
How can turn two indexing vectors into a corresponding matrix that counts how many locations that point has been hit?
The diagonal of a matrix is those elements whose subscripts are (1,1), (2,2), etc s = sparse(x, y, 1) s = (1,1) 2 ...

ungefär en månad ago | 0

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Answered
How can I merge multiple matrix in different size
To merge the matrices and end with that size, they all must have the same number of rows. You haven't suggested what value shou...

ungefär en månad ago | 0

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Answered
How can I reorder paired points
A different approach... your question made me think of graph theory, and path traversal. a = [1 2;2 4;4 6;10 11;11 13;13 15;6...

ungefär 2 månader ago | 0