![]() ![]() Then I get the same array of matrices in lnA for both the MATLAB and R implementations. Choose a web site to get translated content where available and see local events and offers. Matrix P has the same data type as v, and it has n rows and n columns. Each row of P contains a different permutation of the n elements in v. If I add lnA = cell(T, NumModalities) to the MATLAB script before your final for loop and then modify the inside of the loop to be lnA(outcomes(modal,tau),:,:,:,:,:),) P perms(v) returns a matrix containing all permutations of the elements of vector v in reverse lexicographic order. To access this command we just need to pass the order of the multi-dimensional matrix. R does that by default unless you specify drop = FALSE when you subset an array, e.g., lnA] <- a],drop = FALSE] ‘Permute’ command in Permute Matlab is used to rearrange the elements within a multidimensional array. In the MATLAB script, permute appears to be simply dropping excess dimensions. Is there any library in c or c++ to get effect of these two matlab routines. Afewotherissuesregardinghowtowritefast MATLABcodeisalsocovered. MATLAB PERMUTE CODEMatlab implementation of the code extensively use reshape and permute functions to manipulate the layout of multidimensional arrays. Here,manipulatemeansreplicatingandrotatingarraysorpartsofarrays, inserting, extracting, permut-ingandshiftingelements, generatingcombinationsandpermutationsofelements, run-lengthencodinganddecoding, multiplyinganddividingarraysandcalculatingdistancematricsandsoforth. ![]() I don't think you actually need an equivalent for permute. I need to port a piece of code from matlab into C or C++. 1 Answer Sorted by: 12 You are looking for anspose np.transpose ( np.expanddims (A, axis2), (2, 1, 0) ) Since numpy does not have trailing Singleton dimensions by default, you need to explicitly add it using np.expanddims Or else a shorthand for np.expanddims (A, axis2) is A :, :, None so np. ![]() If the length of vec is not a multiple of matcol, then extra zeros are placed in the. P perms(v) returns a matrix containing all permutations of the elements of vector v in reverse lexicographic order. I believe I successfully replicated the MATLAB script in R. The matrix mat has ceil (length (vec)/matcol) rows. ![]()
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