![]() ![]() However, it can always be used in the form LinearAlgebra(.). This command is part of the LinearAlgebra package, so it can be used in the form Permute(.) only after executing the command with(LinearAlgebra). This function is most often used in combination with LUDecomposition and RowEchelonTransform, and is used in LUApply. If the permutation Matrix is required, it can be obtained through application of the Permute function on an identity Matrix. Use of this format makes application of the permutation (or its inverse) to a Matrix or Vector quite simple. For example, for a 4 x 4 Matrix, the identity permutation is given by, ,, ,, , etcetera. Unlike a permutation Matrix, this format does not result in a unique representation for a permutation. This vector can be interpreted as an ordered list of instructions on how to apply a permutation, where the first entry describes the row exchange required for the first row, the second describes the row exchange required for the second row, etcetera.įor example, if, for a 4 x 4 Matrix, the permutation Vector is given by, then this corresponds to the following exchanges in the given order: 1 1, 2 4, 3 4. If invflag is false, it indicates that the permutation itself is to be applied.Īs mentioned before, the permutation must be stored in a compact form in pvec. If the invflag parameter is true, it indicates that the inverse of the permutation is to be applied. If the number of elements in pvec is larger than the number of columns of A, then only the first cols A components of pvec are applied. If rowflag is false, the permutation is applied to the columns of A. If the number of elements in pvec is larger than the number of rows of A, then only the first rows A components of pvec are applied. If rowflag is true, the permutation is applied to the rows of A. r, where r is the number of elements being permuted. ![]() The pvec parameter must be a Vector of type integer/integer, integer, or anything, and must have integer entries in the range 1. The Permute function applies the compact permutation stored in pvec to the mod m Matrix or Vector A in-place. Permute( m, pvec, A, rowflag, invflag )īoolean indicate a row permutation (false for column)īoolean indicate whether inverse permutation is applied It has various features like dimension, size, circshift, and reshape. To access this command we just need to pass the order of the multi-dimensional matrix. ![]() Apply compact permutation to a mod m Matrix or Vector ‘Permute’ command in Permute Matlab is used to rearrange the elements within a multidimensional array. ![]()
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