Using vertcat to convert cellarray consisting of mutiple columns into an array of multiple columns

Question

Shreshtha Chaturvedi 2023-1-29

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https://ww2.mathworks.cn/matlabcentral/answers/1902475-using-vertcat-to-convert-cellarray-consisting-of-mutiple-columns-into-an-array-of-multiple-columns

回答： Sulaymon Eshkabilov 2023-1-29

I have the following cellarray

C = cell(3)
C = 3×3 cell array
    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}    {0×0 double}

I want to vertically contactenate all columns and obtain an array. If my cell array just has one column I use

data_array = vertcat(C{:})

But I am not sure how to do it for multiple columns. Thank you for all the help!

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Walter Roberson 2023-1-29

If the entries in the cells are scalars, then cell2mat()

Shreshtha Chaturvedi 2023-1-29

I just did that, thank you!

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Answer 1

Shreshtha Chaturvedi 2023-1-29

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https://ww2.mathworks.cn/matlabcentral/answers/1902475-using-vertcat-to-convert-cellarray-consisting-of-mutiple-columns-into-an-array-of-multiple-columns#answer_1158645

As @Walter Roberson commented, cell2mat(C) solved my purpose.

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Answer 2

Sulaymon Eshkabilov 2023-1-29

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1902475-using-vertcat-to-convert-cellarray-consisting-of-mutiple-columns-into-an-array-of-multiple-columns#answer_1158655

在 MATLAB Online 中打开

Here is how it can be attained:

C1 = {randi(3, 3)};
C2 = {ones(3)};
C3 = {zeros(3)};
C4 = {randi(3, 3)};
C5 = {ones(3)};
C6 = {zeros(3)};
C7 = {randi(3, 3)};
C8 = {ones(3)};
C9 = {zeros(3)};
C = {C1, C2, C3; C4, C5, C6; C7, C8, C9};
CC = cell2mat(vertcat(C{:}))
CC = 27×3
     1     2     3
     2     3     2
     2     2     1
     2     2     3
     3     1     1
     2     1     1
     1     3     3
     1     1     2
     3     3     1
     1     1     1