Details

This message is generated when a degenerate permutation specification in Transpose is used to collapse the dimensions of a matrix and the specified dimensions do not have the same length.
Off[message] switches off the message; On[message] switches it on. For example: Off[Transpose::diagnl].

Examples

An error occurs because the dimensions to be combined do not have the same length:

Wolfram Language code: Transpose[{{1, 2}, {3, 4}, {5, 6}}, {1, 1}]

This permutation specification can be used to pick out the diagonal elements in a square matrix:

Wolfram Language code: Transpose[{{1, 2}, {3, 4}}, {1, 1}]

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