Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Linear Algebra

' ' transposes rows and columns of an array. This operator is equal to the function trans.
chold The function chold is calculating the triangularisation and the Cholesky decomposition of x into matrices b and d, so that b'*d*b = x.
det det computes the determinant of a matrix.
distance distance computes the distance between p-dimensional datapoints depending on a specified metric.
eiggn eiggn computes the eigenvalues and eigenvectors of a quadratic matrix (or array) in unsorted order.
eigsm eigsm computes the eigenvalues and eigenvectors of a symmetric matrix in unsorted order. As usally this functionality extends to higher dimensional arrays.
inv inv computes the inversematrix. As usally this functionality extends to higher dimensional arrays.
ludecomp ludecomp computes the lu decomposition of a matrix.
qr computes QR decomposition of a n x p matrix. Column pivoting based on the l_2-norms of the reduced columns may be performed at the users option.

qrmat returns Q and R matrixes from the output of the QR decompisition

svd computes the singular value decomposition of a n x p matrix x (n >= p). The singular value decomposition finds matrices u, l, v such that x = u*l*v' u, v are orthogonal matrices l is a diagonal matrix
trans trans transposes matrices. This function is equal to the operator '

Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

(C) MD*TECH Method and Data Technologies, 28.6.1999