MATLAB: Adding a column to table

.csv filecolumnexpandtable

Hey everyone.

I have created my own csv-file. When I use readable to load the table, I get a 8×10 table. I want to expand the table to a 8×11 table where the 11th column should have the values from a function I have created. Can anyone help me with this(I have to give the 11th column a title as well)?

Best Answer

It appears you need to concatenate tables; see for example http://www.mathworks.com/matlabcentral/answers/233921-how-to-add-a-column-of-today-s-date-to-a-table

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Just figured this out: have to use array2table,

   T = array2table(rand(30,8), ...
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      'var6' 'var7' 'var8'});

However if you want to assign other properties besides names, you have to do that separately, unlike the table command,

T.Properties.VariableUnits = {'kg' 'm' 'W' 's' 'g' 'kg' 'm' 'W'};

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csvfiles = dir('*.csv') ; 
N = length(csvfiles) ; 
A = cell(N,1) ;
for i = 1:N
    A{i} = csvread(csvfiles(i).name)
end

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MATLAB: Does table creation produce error “VariableNames property must contain one name for each variable in the table”

MATLAB: Merging multiple csv files into one mat file

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