matlab Permute Rearrange dimensions of N-D array

最新推荐文章于 2021-03-22 10:23:46 发布

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本文详细介绍了 permute 函数的使用方法，该函数用于重新排列多维数组的维度顺序。文章通过实例展示了如何使用 permute 和 ipermute 函数来实现矩阵转置，并给出了一维、二维及三维数组的操作示例。

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Syntax

B = permute(A,order)

Description

B = permute(A,order) rearranges the dimensions of A so that they are in the order specified by the vector order. B has the same values of A but the order of the subscripts needed to access any particular element is rearranged as specified by order. All the elements of order must be unique.
Tips

permute and ipermute are a generalization of transpose (.') for multidimensional arrays.
Examples

Given any matrix A, the statement
permute(A,[2 1])

is the same as A.'.

For example:
A = [1 2; 3 4]; permute(A,[2 1])
ans =
     1     3
     2     4

The following code permutes a three-dimensional array:
X = rand(12,13,14);
Y = permute(X,[2 3 1]);
size(Y)
ans =
    13    14    12