Matlabe permute how to#
dPermuted = permute(d, ) Ĭaxis() % make the range of intensities better įinal step - how to add in an extra singleton dimensionsįor montage() to do the right thing, we need to permute the array to also include a singleton 3rd dimension (see echo360 recording for an explanation). En general, la dimensin i-sima del arreglo de salida es la dimensin dimorder (i) del arreglo de entrada. Por ejemplo, permute (A, 2 1) cambia las dimensiones de fila y columna de una matriz A. However, the syntax is distinct between xarray and Numpy. transpose () method for N-D array dimension reorderingthere is no separate permute method. In Python, xarray and Numpy arrays are popular. If you permute them then and then you show them with a plotting tool that takes into. B permute (A,dimorder) reorganiza las dimensiones de un arreglo en el orden especificado por el vector dimorder. In Matlab, transpose () is strictly for 2-D matrices, while permute () is for reordering dimensions of N-D arrays. Thus, permute(A,2,1) flips dimension 2 (the columns) of array A with dimension 1 (the rows) of array A, which is equivalent to a transpose ( A' ).
What does this all mean? - conclusion of this detailed look is that the dimensions 2 and 3 in these anatomical images are in an order that makes the montage function not produce nice axial slices. Because MATLAB has data ranged column wise and not the opposite. permute does a permutation of the dimensions of an array, not of its elements, as one may expect from its name.
% display a slice (which has 1st and 3rd dims) figure, imagesc ( squeeze ( d (:, 128, :))) ylabel ( 'first dimension of array' ) xlabel ( 'third dimension' ) colormap ( gray ) axis image the desired orientations data dimension
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