MATLAB: Repeat values in a matrix

MATLABmatrix

I want to convert a column matrix of size 10×1 to 10×10000 matrix in which all columns in the converted matrix are same as the values in the initial column matrix,

For example, x=[a;b;c], if i convert this to a 3×3 matrix, it should be [a a a; b b b; c c c]

Best Answer

doc repmat

x = [1 2 3] ;
iwant =  repmat(x,3,1)

Related Solutions

MATLAB: Function repeat number

combvec() from the Deep learning toolbox is most easiest solution

a = [1 2 3]
b = [1 2 3]
C = combvec(a, b).'; % if the order of column is important: C = fliplr(combvec(a, b).');

The other solution is to use ndgrid()

a = [1 2 3]
b = [1 2 3]
[A, B] = ndgrid(a, b);
C = [B(:) A(:)]

MATLAB: How to multiply each row of a matrix with every row of another matrix elementwise

bsxfun(@times,permute(A,[1,3,2]),permute(B,[3,1,2]))

or using MATAB R2016b and newer:

permute(A,[1,3,2]) .* permute(B,[3,1,2])

Best Answer

Related Solutions

MATLAB: Function repeat number

MATLAB: How to multiply each row of a matrix with every row of another matrix elementwise

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