Feature methods

These methods enable the receiving of matrix features, such as:

Function	Action
Rows	Return the number of rows in a matrix
Cols	Return the number of columns in a matrix
Size	Return the size of vector
Norm	Return matrix or vector norm
Cond	Compute the condition number of a matrix
Det	Compute the determinant of a square invertible matrix
SLogDet	Compute the sign and logarithm of the determinant of an matrix
Rank	Return matrix rank using the Gaussian method
Trace	Return the sum along diagonals of the matrix
Spectrum	Compute spectrum of a matrix as the set of its eigenvalues from the product AT*A

LinearRegression

Rows