How to convert a column vector into an image

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Boni_Pl 2019-5-22

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https://ww2.mathworks.cn/matlabcentral/answers/463478-how-to-convert-a-column-vector-into-an-image

评论： Boni_Pl 2019-5-23

采纳的回答： Walter Roberson

Hello sir

I have an vector of size (258x1). Now I want to convert it into a square matrix (101x101) i.e. in 2D image in matlab.

Please help me.

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Walter Roberson 2019-5-23

What data type is the vector, such that it has two values per entry ?

Boni_Pl 2019-5-23

if A=[1;2;3;6;4;8;9] and coordinates are C=[3 4;1 2;5 6;4 5;5 3;1 6;6 6] so if a matrix is B=zeros(6, 6) then how can I replace each elements of A vector with B matrix using the coordinates points

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采纳的回答

Walter Roberson 2019-5-23

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https://ww2.mathworks.cn/matlabcentral/answers/463478-how-to-convert-a-column-vector-into-an-image#answer_376272

在 MATLAB Online 中打开

nrow = 6; ncol = 6;
B = full( sparse(C(:,1), C(:,2), A, nrow, ncol) );

nrow = 6; ncol = 6;
B = accumarray(C, A(:), [nrow ncol]);

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Boni_Pl 2019-5-23

Thank you sir

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