merge cells into a single one

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Qifan 2014-7-28

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https://ww2.mathworks.cn/matlabcentral/answers/143617-merge-cells-into-a-single-one

评论： dpb 2014-7-28

I have a number of cells h={cell1; cell2; cell3;...cell100}, each cell contains one row but multiple columns (1*n, n varies across cells). Now I want a single cell g contain one row and the sum(n) columns. The basic method is g=[h(1) h(2) h(3) ... h(100)]. Since there are so many cells, it is not convenient to type all. Is there any effective way to make this by exploiting the index? Many thanks.

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Qifan 2014-7-28

A simple transpose function works for cell array.

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Answer 1

Azzi Abdelmalek 2014-7-28

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https://ww2.mathworks.cn/matlabcentral/answers/143617-merge-cells-into-a-single-one#answer_146662

在 MATLAB Online 中打开

If your data looks like

v={1:3  10:20   4   100:105}
out=cell2mat(v)

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Qifan 2014-7-28

Thanks, but actually I have h={1:3; 10:20; 4; 100:105} and I want to have the v you mentioned. The basic way is just too inconvenient to type.

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Answer 2

dpb 2014-7-28

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https://ww2.mathworks.cn/matlabcentral/answers/143617-merge-cells-into-a-single-one#answer_146663

编辑：dpb 2014-7-28

在 MATLAB Online 中打开

c={cell2mat(c)};

...h={1:3; 10:20; 4; 100:105}

Well, you didn't say that in the original. But the answer is the same excepting you must transpose c --

c={cell2mat(c.')};

I returned it as a cell, Azzi just left it as the array; your choice of which you want.

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Qifan 2014-7-28

The transpose function works, but thanks for the help.

dpb 2014-7-28

.' is the transpose function as was pointed out that's what you needed to do once you revealed you had a column array instead of row. The ' operator is the complex conjugate transpose; for the cell array orientation the accidental use of ' instead of .' does no harm as it doesn't operate on the cell content, but it's a poor habit to get into.

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