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

Question

Smithy 2022-8-3

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1773110-how-to-concatenate-numbers-with-bracket-as-cell-type

评论： Smithy 2022-8-3

采纳的回答： Jan

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 2022-8-3

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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Answer 1

Jan 2022-8-3

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1773110-how-to-concatenate-numbers-with-bracket-as-cell-type#answer_1020525

在 MATLAB Online 中打开

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)"