eigen

Contents: Description, Arguments, Usage, Examples, Related Functions Supported Under Version: >1.69 Current Davinci Version: 2.27 64-bit Safe: No Description Computes the Eigen values and Eigen vectors of a real symmetric input matrix Arguments and Return Values Arguments: A numeric array Return Value: A numeric array contain Eigen values and vectors of input Usage Syntax: eigen(obj = VAL [, niter = INT]) The eigen() function computes the Eigen Values and Vectors for a real symmetric [m x m x 1] matrix passed in as the 'obj' parameter. The 'niter' parameter specifies the maximum number of iterations allowed during Tridiagonal QL algorithm. If pcs() fails due to 'no convergence' error, try increasing this number. Assume that 'a' is a [3x3x1] matrix, then the following line will compute the Eigen Values and Eigen vectors of matrix 'a'. The return value 'e' is a [4x3x1] matrix, with the first column containing the Eigen Values and the next three columns containing the Eigen Vectors. Examples dv> a 3x3x1 array of float, bsq format [36 bytes] 0.558329 0.100168 0.899324 0.805147 0.930234 0.535199 0.938504 0.0242239 0.597536 dv> e = eigen(a) 4x3x1 array of float, bsq format [48 bytes] 1.91455 0.669851 0.134651 -0.730184 0.761486 0.559922 -0.737468 0.377663 -0.589938 0.487634 0.661824 0.569387

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