matrix_transpose_test <- function ( ) #*****************************************************************************80 # ## matrix_transpose_test() computes a matrix transpose using einsum(). # # Licensing: # # This code is distributed under the MIT license. # # Modified: # # 07 August 2026 # # Author: # # John Burkardt # cat ( '\n' ) cat ( ' matrix_transpose_test():\n' ) A = matrix ( c ( 11, 12, 13, 21, 22, 23 ), nrow = 2, ncol = 3, byrow = TRUE ) cat ( ' A:\n' ) print ( A ) AT = einsum ( 'ij -> ji', A ) cat ( ' AT = einsum ( \'ij -> ji\', A ):\n' ) print ( AT )