I have a multidimensional matrix
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, for example a=[1 2 3 ; 4 5 6 ; 7 8 9] , b=[0 1 3 ; 2 0 4 ; 6 9 8] and c=[2 1 4 ; 5 6 2 ; 4 5 2] , my multidimensional matrix is : d(:,:,1)=a , d(:,:,2)=b and d(:,:,3)=c. now I need the function for adding column or row to d matrix. what is the function???
回答（2 个）
Star Strider
2017-12-21
Try this:
d = cat(3, a, b, c);
2 个评论
RIZA KAYAALP
2017-12-21
Star Strider
2017-12-21
Yes it is!!!
You absolutely cannot add (3x2) matrix ‘e’ to a (3x3x3) matrix ‘d’!!!
You have to expand ‘e’ to at least (3x3) to add it. Then you can use bsxfun:
Out = bsxfun(@plus, d,e);
Jos (10584)
2017-12-22
Assuming you have 3D matrix of size N-by-M-by-P and you want to concatenate (I assume you meant this by the word add!) another matrix to one of its dimensions the other dimensions should match!
In your case this cannot be done because d is a 3-by-3-by-3 array, whereas a is 3-by-2! What is the output that you would have expected?
Here is an example
D = randi(10,[3 4 2]) % a 3-by-4-by-2 3D array
E = repmat(-1,[3 2]) % to be added to the 2nd dimension (columns) of D
E2 = reshape(E,[3 1 2])
R = cat(2,D,E2)
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2017-12-21
2017-12-22
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