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hello everyone, i have a problem in labeling the matrix.

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AMIT BHASKAR
AMIT BHASKAR 2015-10-30
关闭： MATLAB Answer Bot 2021-8-20
let's suppose i have 4x6 matrix, i want to assign each row as [1 2 3 4] similarly column [1 2 3 4 5 6] with some extra space with current matrix so that its not be seen as the part of matrix and at the end,matrix dimension should not change(i.e. 4x6). how can i do? can u help please? for example
d= 11 12 13 14 15 16
17 18 19 21 22 24
27 28 25 2 44 45
23 23 23 3 3 3
d is a matrix, i want to represent this as
d=
1 2 3 4 5 6
1 11 12 13 14 15 16
2 17 18 19 21 22 24
3 27 28 25 2 44 45
4 23 23 3 3 3 3
but the important thing is, i don't want 1:6 Z& 1:4 as a part of matrix,i.e. matrix dimension should not change i.e. 4x6,only additional part is, matrix d has labeled now.
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AMIT BHASKAR
AMIT BHASKAR 2015-10-30
for ease of understanding i change the value of matrix from 20x40 to 4X6 with example. thanks
Ilham Hardy
Ilham Hardy 2015-10-30
Firstly, that's not how the flag works.
Secondly, WHY do you want to do that?

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回答（2 个）

Ced
Ced 2015-10-30
This is ugly, but should do the trick. Not sure why you want this though...
function print_my_mat(A)
nrows = size(A,1);
ncols = size(A,2);
my_cell = cell(nrows+1,ncols+1);
my_cell(1,2:end) = num2cell(1:ncols); % number your columns
my_cell(2:end,1) = num2cell(1:nrows); % number your rows
my_cell(2:end,2:end) = num2cell(A); % write your matrix inside cell
for i = 1:nrows
% format your numbers as desired and save as string
temp = cellfun(@(x)num2str(x,'%i'),my_cell(i,:),'UniformOutput',0);
% print row
cellfun(@(x)fprintf('%4s',x),temp,'UniformOutput',0);
% next line
fprintf('\n')
end
end
Walter Roberson
Walter Roberson 2015-11-7
You would need to define a new data class of labeled matrix. You could possibly subclass from double precision so that you would not have to re-code all of the numeric operations. You would have to code a new display() method for the class.
But it is easier by far to just write a small bit of code that displays the matrix in that form when you ask it to.

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