Add a matrix of strings

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alpedhuez
alpedhuez 2020-12-7
评论： Walter Roberson 2020-12-7
% Add a matrix of zeros to host the dummy variables
dum=zeros(length(Month),length(set_of_month));
T=[table(Month) array2table(dum)];
will add a matrix of zeros. But I want to add a matrix of some strings like
--------------
United States
United States
Then how can one modify the above code?
**********
This is what I did:
dum=zeros(height(T),1)
dum1=num2cell(dum)
dum1(dum==0)={'US'}
T1=cell2table(dum1)
T=[T T1]

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采纳的回答

Walter Roberson
Walter Roberson 2020-12-7
T = table(Month);
T.Country(:) = "United States";
or consider
T = table(Month);
T.Country(:) = categorical("United States");
  2 个评论
alpedhuez
alpedhuez 2020-12-7
"Conversion to cell is not possible"
Walter Roberson
Walter Roberson 2020-12-7
Ran in:
Month = randi(12, 7, 1);
T = table(Month);
T.Country(:) = "United States";
T
T = 7x2 table
Month Country _____ _______________ 1 "United States" 2 "United States" 5 "United States" 3 "United States" 3 "United States" 4 "United States" 4 "United States"
T2 = table(Month);
T2.Country(:) = categorical("United States");
T2
T2 = 7x2 table
Month Country _____ _____________ 1 United States 2 United States 5 United States 3 United States 3 United States 4 United States 4 United States
No problem -- not unless you already happened to have a table variable named Country; or unless you neglected to remove the table variables that resulted from your earlier experiments.

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