Effacer les filtres
Effacer les filtres

Creating a table with only headers

116 vues (au cours des 30 derniers jours)
Sebastian Daneli
Sebastian Daneli le 15 Nov 2021
Commenté : Star Strider le 16 Nov 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 le 15 Nov 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 commentaires
Sebastian Daneli
Sebastian Daneli le 15 Nov 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 le 15 Nov 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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Plus de réponses (1)

Seth Furman
Seth Furman le 16 Nov 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 commentaires
Adam Danz
Adam Danz le 16 Nov 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 le 16 Nov 2021
Duly noted! I completely forgot about 'Size'.
Thank you!

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