How to divide vector to matrix(same row and column)

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Kong
Kong 2020-3-27
编辑： KSSV 2020-3-27
Hello.
I got some vector like (82580526 X 1)
I want to divide this vector to matrix. The matrix have same row and column. (N x N)
If it can't be divide equally, some row or column of the matrix can be splited.
Could you explain how to have same row and column?

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KSSV
KSSV 2020-3-27
编辑：KSSV 2020-3-27
To remove extra elements and convert to square matrix
A = rand(82580526,1) ;
l = length(A) ;
% GEt the nearest perfect square
N = floor(sqrt(l)) ;
% Reshape into required matrix
iwant = reshape(A(1:N*N),N,N) ;
To append zeros and convert to square matrix
A = rand(82580526,1) ;
l = length(A) ;
% GEt the next perfect square
N = ceil(sqrt(l)) ;
% Append zeros
A = [A ; zeros(N^2-l,1)] ;
% Reshape into required matrix
iwant = reshape(A,N,N) ;

更多回答（1 个）

Walter Roberson
Walter Roberson 2020-3-27
If you have the Communications Systems Toolbox, then
buffer(TheVector, ceil(sqrt(numel(TheVector))))

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