reshape (MATLAB Function Reference)

Reshape array

B = reshape(A,m,n)
B = reshape(A,m,n,p,...)
B = reshape(A,[m n p...])
B = reshape(A,siz)

Description

B = reshape(A,m,n)

returns the m-by-n matrix B whose elements are taken column-wise from A. An error results if A does not have m*n elements.

B = reshape(A,m,n,p,...) or B = reshape(A,[m n p...])

returns an N-D array with the same elements as X but reshaped to have the size m-by-n-by-p-by-... . m*n*p*... must be the same as prod(size(x)).

B = reshape(A,siz)

returns an N-D array with the same elements as A, but reshaped to siz, a vector representing the dimensions of the reshaped array. The quantity prod(siz) must be the same as prod(size(A)).

Examples

Reshape a 3-by-4 matrix into a 2-by-6 matrix:

A =
    1    4    7    10
    2    5    8    11
    3    6    9    12
          
B = reshape(A,2,6)
          
B =
    1    3    5    7    9   11
    2    4    6    8   10   12