# How to concatenate numbers with ( ) bracket as cell type?

5 vues (au cours des 30 derniers jours)
Smithy le 3 Août 2022
Commenté : Smithy le 3 Août 2022
Hello everybody,
I have a matrix 10*3 and the data type is double. and if possble, I would like to know
how to make 10*1 cell with ( ) bracket after concatenating. Is there a way to make the 10*1 cell?
input = [-5,21,-5;-5,21,-3;-3,21,-5;-5,19,-5;-3,21,-3;-5,19,-3;-3,19,-5;-3,19,-3;-5,21,0;-5,16,-5];
input = num2cell(input);
% I would like to make the 10*1 cell looks as below. It has the bracket.
(-5,21,-5)
(-5,21,-3)
(-3,21,-5)
(-5,19,-5)
(-3,21,-3)
(-5,19,-3)
(-3,19,-5;)
(3,19,-3)
(-5,21,0)
(-5,16,-5)
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Walter Roberson le 3 Août 2022
the output would have to be cell array of character vectors, or else string array. You cannot create a numeric matrix in that format.
You can display a numeric matrix in that format without a lot of trouble through.

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### Réponse acceptée

Jan le 3 Août 2022
As Walter said already: If it contains parentheses ( and ), the elements of the cell cannot be numerical.
in = [-5,21,-5;-5,21,-3;-3,21,-5;-5,19,-5;-3,21,-3;-5,19,-3;-3,19,-5;-3,19,-3;-5,21,0;-5,16,-5];
out = cell(10, 1);
for k = 1:10
out{k} = sprintf('(%g,%g,%g)', in(k, :));
end
out
out = 10×1 cell array
{'(-5,21,-5)'} {'(-5,21,-3)'} {'(-3,21,-5)'} {'(-5,19,-5)'} {'(-3,21,-3)'} {'(-5,19,-3)'} {'(-3,19,-5)'} {'(-3,19,-3)'} {'(-5,21,0)' } {'(-5,16,-5)'}
% Or:
C = compose("(%g,%g,%g)", in)
C = 10×1 string array
"(-5,21,-5)" "(-5,21,-3)" "(-3,21,-5)" "(-5,19,-5)" "(-3,21,-3)" "(-5,19,-3)" "(-3,19,-5)" "(-3,19,-3)" "(-5,21,0)" "(-5,16,-5)"
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Smithy le 3 Août 2022
Thank you very much. It works really well.

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