MATLAB Programming

Multidimensional Arrays
4 3 6
A(:,:,2) =
1 0 4
3 5 6
9 8 7
You can continue to add rows, columns, or pages to the array using similar
assignment statements.
Extending Multidimensional Arrays
To extend A in any dimension:
• Increment or add the appropriate subscript and assign the desired values.
• Assign the same number of elements to corresponding array dimensions.
For numeric arrays, all rows must have the same number of elements, all
pages must have the same number of rows and columns, and so on.
You can take advantage of the MATLAB scalar expansion capabilities,
together with the colon operator, to fill an entire dimension with a single value:
A(:,:,3) = 5;
A(:,:,3)
ans =
5 5 5
5 5 5
5 5 5
To turn A into a 3-by-3-by-3-by-2, four-dimensional array, enter
A(:,:,1,2) = [1 2 3; 4 5 6; 7 8 9];
A(:,:,2,2) = [9 8 7; 6 5 4; 3 2 1];
A(:,:,3,2) = [1 0 1; 1 1 0; 0 1 1];
Note that after the first two assignments MATLAB pads A with zeros, as
needed, to maintain the corresponding sizes of dimensions.
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