How to horizontally concatenate the cells of a cell array with different contents into a string.

Question

Konstantinos Tsitsilonis 2018-11-8

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https://ww2.mathworks.cn/matlabcentral/answers/428699-how-to-horizontally-concatenate-the-cells-of-a-cell-array-with-different-contents-into-a-string

评论： madhan ravi 2018-11-8

采纳的回答： madhan ravi

在 MATLAB Online 中打开

Hi All,

I have a cell array as the one below:

 EXTR =
20×3 cell array
    {[ 550]}    {[2]}    {'GAM'}
    {[ 600]}    {[2]}    {'GAM'}
    {[ 650]}    {[2]}    {'GAM'}
    {[ 700]}    {[2]}    {'GAM'}
    {[ 750]}    {[2]}    {'GAM'}
    {[ 800]}    {[2]}    {'GAM'}
    {[ 850]}    {[2]}    {'GAM'}
    {[ 900]}    {[2]}    {'GAM'}
    {[ 950]}    {[2]}    {'GAM'}
    {[1000]}    {[2]}    {'GAM'}
    {[1100]}    {[2]}    {'GAM'}
    {[1200]}    {[2]}    {'GAM'}
    {[1300]}    {[2]}    {'GAM'}
    {[1400]}    {[2]}    {'GAM'}
    {[1500]}    {[2]}    {'GAM'}
    {[1600]}    {[2]}    {'GAM'}
    {[1700]}    {[2]}    {'GAM'}
    {[1800]}    {[2]}    {'GAM'}
    {[1900]}    {[2]}    {'GAM'}
    {[2000]}    {[2]}    {'GAM'}

How is it possible to create a cell array that looks like this:

 EXTR =
20×3 cell array
    {'550 2 GAM'}
    {'600 2 GAM'}
    {'650 2 GAM'}
    .....

In words, I would like all my columns to be combined into one where their contents are a string with a single space between them.

I have tried things in the like of horzcat(EXTR{:}), however they are not working for this case, possibly because not all contents are of uniform type...

Thanks for your help in advance,

KMT.

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Answer 1

madhan ravi 2018-11-8

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https://ww2.mathworks.cn/matlabcentral/answers/428699-how-to-horizontally-concatenate-the-cells-of-a-cell-array-with-different-contents-into-a-string#answer_345829

编辑：madhan ravi 2018-11-8

在 MATLAB Online 中打开

c={{[ 550]}    {[2]}    {'GAM'}
    {[ 600]}    {[2]}    {'GAM'}}
c=cellfun(@string,c)
join(c)

command window:

>> COMMUNITY
c = 
    2×1 string array
      "550 2 GAM"
      "600 2 GAM"
>>

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madhan ravi 2018-11-8

see edited answer

madhan ravi 2018-11-8

在 MATLAB Online 中打开

if you want to make it as cell array just put curly braces in and around i.e.,

c={join(c)} %at the end

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Answer 2

Stephen23 2018-11-8

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https://ww2.mathworks.cn/matlabcentral/answers/428699-how-to-horizontally-concatenate-the-cells-of-a-cell-array-with-different-contents-into-a-string#answer_345837

编辑：Stephen23 2018-11-8

在 MATLAB Online 中打开

An old-fashioned way (strings are probably easier):

>> C = {550,2,'GAM';600,2,'GAM';650,2,'GAM';700,2,'GAM';750,2,'GAM';800,2,'GAM';850,2,'GAM';900,2,'GAM';950,2,'GAM';1000,2,
'GAM';1100,2,'GAM';1200,2,'GAM';1300,2,'GAM';1400,2,'GAM';1500,2,'GAM';1600,2,'GAM';1700,2,'GAM';1800,2,'GAM';1900,2,'GAM';
2000,2,'GAM'};
>> D = C.';
>> S = sprintf('\n%d %d %s',D{:});
>> Z = regexp(S(2:end),'\n','split');
>> Z{:}
ans = 550 2 GAM
ans = 600 2 GAM
ans = 650 2 GAM
ans = 700 2 GAM
ans = 750 2 GAM
ans = 800 2 GAM
ans = 850 2 GAM
ans = 900 2 GAM
ans = 950 2 GAM
ans = 1000 2 GAM
ans = 1100 2 GAM
ans = 1200 2 GAM
ans = 1300 2 GAM
ans = 1400 2 GAM
ans = 1500 2 GAM
ans = 1600 2 GAM
ans = 1700 2 GAM
ans = 1800 2 GAM
ans = 1900 2 GAM
ans = 2000 2 GAM