How to concatenate string array to matrix?

I have a question regarding adding a string array to a matrix. i.e.
string array = {'A','B','C'}; B = eye(3); I want to concatenate those two in column, i.e. I want to get is eventually;
[1,0,0,A; 0,1,0,B; 0,0,1,C]
Thank you so much for your help in advance! Best,

Antworten (1)

Adam
Adam am 1 Mär. 2017
Bearbeitet: Adam am 1 Mär. 2017

0 Stimmen

stringArray = {'A','B','C'};
B = eye(3);
result = [num2cell(B) stringArray'];
is the best you can do, resulting in a cell array.
[1,0,0,A; 0,1,0,B; 0,0,1,C]
is not a valid array in Matlab unless A, B and C are variables, but since you are talking about a cell array of chars I assume that is not the case.

4 Kommentare

Hyon Kim
Hyon Kim am 1 Mär. 2017
Thank you Adam Do you know why only cell array allows to mix char/string with numbers? Please let me know if you happen to know. Best,
Adam
Adam am 1 Mär. 2017
Bearbeitet: Adam am 1 Mär. 2017
Because that is their purpose. All other arrays are uni-type (ish).
Hyon Kim
Hyon Kim am 2 Mär. 2017
I see. Thank you so much for your help!
Walter Roberson
Walter Roberson am 2 Mär. 2017
tables can also mix strings with numbers, but they are pretty much implemented as cell arrays.

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