Creating a table with only headers

I would like to create an empty table with the headers 'Observations', 'Mean', 'Treatment' and 'Residual'. I would also like the predetermine the amount of data to fit in the table, i.e., if I have two 2 sets, the table should allow for 2*4 inputs.

Answer 1

[Adam Danz]

To create an emtpy table with 4 headers,

T = array2table(nan(0,4), 'VariableNames', {'Observations', 'Mean', 'Treatment', 'Residual'})

T =

  0×4 empty table

To create 2x4 table of numeric values,

T = array2table(nan(2,4), 'VariableNames', {'Observations', 'Mean', 'Treatment', 'Residual'})

T = 2×4 table
    Observations    Mean    Treatment    Residual
    ____________    ____    _________    ________

        NaN         NaN        NaN         NaN   
        NaN         NaN        NaN         NaN   

[Sebastian Daneli]

@Adam Danz, turns out I missunderstood the purpose of tables. If i wan't to do the same thing but for cells?

[Adam Danz]

You can't add header names for cells but to preallocate the cells in the same way I've shown for tables,

C = cell(0,4)

or

c = cell(2,4)

Answer 2

[Seth Furman]

table has a preallocation syntax:

table('Size', [2 4], 'VariableNames', ["Observations", "Mean", "Treatment", "Residual"], 'VariableTypes', repmat("double", 1, 4))

ans = 2×4 table
    Observations    Mean    Treatment    Residual
    ____________    ____    _________    ________

         0           0          0           0    
         0           0          0           0    

https://www.mathworks.com/help/matlab/ref/table.html

[Adam Danz]

Thanks Seth.

@Sebastian Daneli, this solution also allows you to set the variable types which is quite useful. This is the better answer.

[Star Strider]

Duly noted! I completely forgot about 'Size'.

Thank you!