f such a transform. 
<a name="index-FFTW_005fMPI_005fTRANSPOSED_005fOUT-383"></a><a name="index-FFTW_005fMPI_005fTRANSPOSED_005fIN-384"></a>

   <p>Suppose you have are transforming multi-dimensional data with (at
least two) dimensions n<sub>0</sub>&nbsp;&times;&nbsp;n<sub>1</sub>&nbsp;&times;&nbsp;n<sub>2</sub>&nbsp;&times;&nbsp;&hellip;&nbsp;&times;&nbsp;n<sub>d-1</sub>.  As always, it is distributed along
the first dimension n<sub>0</sub>.  Now, if we compute its DFT with the
<code>FFTW_MPI_TRANSPOSED_OU