Answered
How to remove the for loop?
dy = sum(triu(w(:)*ones(1,numel(w))).*toeplitz([y(1);zeros(numel(y)-1,1)],y)); dy(1) = 0;

10 years ago | 1

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Answered
A=[1,3,5;9,8,7;10,15,20] use A and matrix addressing to create a 2x3 matrix consisting of the first two elements of the first column, the last two elements of the 2nd column, and the first two elements of the last row.
A = randi(125,30,3);% Let A - your data. b = A'; k = 3:6:numel(A); b([k,k+1]) = nan; out = reshape(b(~isnan(b)...

10 years ago | 0

Solved

Throw common elements of two vector arrays in sorted manner
Throw common elements as output in sorted manner (acending order) of two given input vector arrays

10 years ago

Answered
How to Swap alternate rows of a column matrix
n = size(A,1); k = rem(n,2); out = A(flipud(reshape(1:n-k,2,[])),:); if k == 1, out = [out;A(end,:)]; end

10 years ago | 0

Answered
how to sum by 2 indeces?
i0 = [true;diff(A)~=0]; ii = [find(i0);numel(A)+1]; for jj = 1:numel(b) i0(ii(jj):b(jj):ii(jj+1)) = 1; end ...

10 years ago | 0

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Answered
How to convert cell array to 3D array. I want to convert cell to mat
[a,b] = cellfun(@size,pu); n = numel(pu); out = zeros(max(a),max(b),n) for jj = 1:n out(1:a(jj),1:b(jj),jj) = ...

10 years ago | 1

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Answered
How to rename array layer number or iteration no.
Сan it? layer1 = circshift(layer1,[0 8]); or layer1 = layer1(:,[2:end,1]); or p = [90 90 -45 0 0 45 45 0 -4...

10 years ago | 1

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Answered
How to cut and add values from every iteration. Please Help
Hi Ranjan! Edited loop for..end in your code. output1 = cell(n-1,1); for jj = 2:n layer1(jj,:) = layer1(jj-1,:);...

10 years ago | 1

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Answered
How to assemble the Matrix A for any number of nodes?
n = 15; a = ones(n,1); b = rem((1:n)',3)~=0; c = [1;b(1:end-1)]; d = [2*ones(6,1);ones(n-6,1)]; A = ful...

10 years ago | 1

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Answered
Access subarry from large file and loop through each subarry.
A_out = accumarray(A(:,1),(1:size(A,1))',[],@(x){A(x,:)}); other: b = unique(A(:,1)); n = numel(b); A_out = cell...

10 years ago | 0

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Answered
How to cut and reshape values?
layer1 = reshape(layer(2:end,:)',1,size(layer,2),5)

10 years ago | 1

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Answered
How to interchange/swap variable in matrix and store it to different variable.
ii = find(idx); n = numel(ii); out = zeros(n,numel(p)); out(1,:) = p; i1 = fliplr(ii); for jj = 2:n out(...

10 years ago | 1

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Answered
How can i find positions of sorted/unique values.
idx = fliplr([true, diff(fliplr(p))~=0]); out = find(idx);

10 years ago | 1

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Answered
Eliminating element if a vector
a = [4 5 6 5 4 8]; ii = find(a == 6,1,'first') out = a; out(ii+1:end)=0

10 years ago | 1

Answered
Switching individual columns in a large matrix
Let your data matrix M: a = M(:,1:4:end); b = unique(a(:)); out = zeros(numel(b),size(M,2)); for = jj = 1:size(a,2...

10 years ago | 0

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Answered
how can i compare two string matrix with conditions ?
a={'yes' 'yes';'no' 'no'} b={'no' 'yes';'yes' 'no'} aby = cellfun(@(x)strcmp(x,'yes'),a) bby = cellfun(@(x)strcmp(x,...

10 years ago | 1

Answered
Write a function so that, when given a natural number N, the function returns the value max n ∈ N : 12 + 22 + · · · + n 2 ≤ N
your_function = @(n,m,N)sum((n+m):n:N); use >> n = 10; m = 2; N = 90; >> your_function(n,m,N) ans = ...

10 years ago | 1

Answered
Why does my matlab function produce result more than I expect?
use: Testing;

10 years ago | 0

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Answered
How to generate the random number with restrictions?
a1 = 1:28 a2 = 29:35 out = [a1(randperm(numel(a1),7)),a2(randi(numel(a2)))]

10 years ago | 0

Answered
How to sum by 3d array?
out1 = cell2mat(accumarray(idx1,(1:numel(data))',[],... @(x){[nan(s(x(1))-1,1);conv2(data(x),ones(s(x(1...

10 years ago | 0

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Answered
Incomplete time series: Fill missing dates with NaNs
k = datenum(['09-01-2013-22-49-18';'09-02-2013-07-27-48'],'mm-dd-yyyy-HH-MM-SS'); add = datestr(k(1):1/24/4:k(2),'mm-dd-yyy...

10 years ago | 0

Answered
how can i arrange values from decimal array to the 0-255 range array?
z =[0 -0.00198139860960000 -0.00388998355544162 -0.00572886191255736 -0.00750102086941585 -0.00920933176306192 ...

10 years ago | 0

Answered
how to truncate specific rows and columns of matrix in matlab.
out = A([1,3:end],[1,3:end])

10 years ago | 1

Answered
How summation of two matrix so that one element of A matrix summed with B matrix and save in M(1,1)?
M = kron(ones(size(A)),B)+kron(A,ones(size(B)));

10 years ago | 2

Answered
Extracting polynomial coefficients from function handle
reshape(str2double(regexp(func2str(f),'\d*(?=\*x\^)|(?<=\*x\^)\d*','match')),2,[])'

10 years ago | 1

Answered
Add ddmmm to the year column
out = [arrayfun(@(x)sprintf('31May%d',x),c(:,1),'un',0),num2cell(c(:,2))];

10 years ago | 0

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Answered
Fastest way to multiply each block of an array with another matrix
Let A - your array with size [12x4xN] B - matrix 4x16 sa = size(A); sb = size(B); out = zeros([sa(1),sb(2),sa(...

10 years ago | 0

Answered
ndgrid on matrices without the use of cell arrays
m = size(A,1); % A - your array b = reshape(A,m,[],2); [ii,jj] = ndgrid(1:m); out2 = [b(jj(:),:,1),b(ii(:),:,2)]

10 years ago | 1

Answered
How do I create a loop and put the results that satisfy the loop into a new variable?
a = fastTimes(:); ii = find(diff(a)<0.815); fastTimesChop = [a(ii),a(ii+1)];

10 years ago | 0

Answered
detecting 6 ones in a vector
b = A == 1; % A - your array t = [true;diff(b)~=0]; n = find(t); p = [n,diff([n;numel(A)+1])]; out1 = p(A(n)==1,:)...

10 years ago | 0