How to add rows to an existing table

Question

Morgan Roberts 2018-1-11

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/376581-how-to-add-rows-to-an-existing-table

评论： Martin Dale 2019-4-30

Hi

I am trying to add rows to this existing table, however I can't seem to add any, the one row just gets changed to the new value.

    1×7 table
       Neuron     Neuron_ID    NoSynapses    SynapticDensity    NoBranches    BranchDensity    Clustering
      ________    _________    __________    _______________    __________    _____________    __________
      'ipsiCN'    [5]          [2]           [4.0060]           [12]          [0.0482]         [0]

Does anyone have any help on this?

Cheers

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Brian Droncheff 2018-8-26

A link to this particular documentation for this particular question would be helpful. I have been looking all around for this exact same thing but... ended up here as well as not being able to find the answer.

Martin Dale 2019-4-30

https://uk.mathworks.com/help/matlab/matlab_prog/add-and-delete-table-rows.html

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Answer 1

Brian Droncheff 2018-8-26

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https://ww2.mathworks.cn/matlabcentral/answers/376581-how-to-add-rows-to-an-existing-table#answer_334187

编辑：Brian Droncheff 2018-8-26

在 MATLAB Online 中打开

Fitting to this format where 'A', 'B', etc.. are your values of Neuron Neuron_ID etc.

C = {1,2,3,4}
T = cell2table(C,'VariableNames',{'A','B','C','D'})
T1 = table(5, 6, 7, 8,'VariableNames',{'A','B','C','D'})
Tout = [T;T1]

Basically you are creating one Table T from cell2table and then creating the table T1 and Matlab matches the 'variableNames' together. NOTE 'variableNames' is a keyword, it is not an arbitrary name, also that the actual number of and string names such as 'A' 'B' 'C' and 'D' MUST match between the two tables.

The post which I modified the above from is here: Adding Rows to Table

Brian

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Answer 2

KSSV 2018-1-11

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/376581-how-to-add-rows-to-an-existing-table#answer_299573

在 MATLAB Online 中打开

T = table([10;20],{'M';'F'},'VariableNames',{'Age','Gender'},'RowNames',{'P1','P2'})
Tnew = table(30,{'F'},'VariableNames',{'Age','Gender'},'RowNames',{'P3'}) ;
T = [T ; Tnew]