Multi Dimension Transpose

Transposes each plane of an N dimension matrix.

Description

multi_dimension_transpose works for N dimensions transposing each plane individualy. It maintains the existing dimension structure above the first two without any squeeze.

• MATLAB release: MATLAB 6.5 (R13)

[Jos x]

Nice try but your code equals
permute(A,[2 1 3:ndims(A)])
in which A is an N-dimensional matrix (N >= 2).

Moreover, it's _much_ slower!
>> A = rand(2,3,4,5,6,7,8,9) ;
>> tic ; B = multi_dimension_transpose(A) ; toc ;
elapsed_time = 42.2970
>> tic ; C = permute(A,[2 1 3:ndims(A)]) ; toc ;
elapsed_time = 0
>> all(C(:)==B(:))
ans = 1

[Aman Siddiqi]

I implemented the permute code suggested by Jos x. It now runs much faster.
Its still nice to have in one script so the matrix isn't referenced twice and for those who don't know the permute code.

[Jan Simon]

All it does is Jos x's suggested line:
  A = permute(A, [2, 1, 3:ndims(A)]);
after a not documented test "if isfinite(matrix);", which might be rarely useful: The function does not define the output, if all matric elements are INFs.
Although it works at least, the single call to PERMUTE is still faster and more reliable => 1 star.