Creating a table with only headers

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Sebastian Daneli
Sebastian Daneli el 15 de Nov. de 2021
Comentada: Star Strider el 16 de Nov. de 2021
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.

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Adam Danz
Adam Danz el 15 de Nov. de 2021
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
  2 comentarios
Sebastian Daneli
Sebastian Daneli el 15 de Nov. de 2021
@Adam Danz, turns out I missunderstood the purpose of tables. If i wan't to do the same thing but for cells?
Adam Danz
Adam Danz el 15 de Nov. de 2021
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)

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Más respuestas (1)

Seth Furman
Seth Furman el 16 de Nov. de 2021
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
  2 comentarios
Adam Danz
Adam Danz el 16 de Nov. de 2021
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
Star Strider el 16 de Nov. de 2021
Duly noted! I completely forgot about 'Size'.
Thank you!

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