Matrix Function and Command Summary

colplace ...............

Places column vector into matrix (p. 611).

@columnextract...

Extracts column from matrix (p. 612).

@columns ...........

Number of columns in matrix object (p. 612).

@convert .............

Converts series or group to a vector or matrix after removing NAs

(p. 613).

@explode.............

Creates square matrix from a sym (p. 616).

@filledmatrix.......

Creates matrix filled with scalar value (p. 616).

@filledrowvector..

Creates rowvector filled with scalar value (p. 617).

@filledsym ..........

Creates sym filled with scalar value (p. 617).

@filledvector .......

Creates vector filled with scalar value (p. 617).

@getmaindiagonal Extracts main diagonal from matrix (p. 618).

@identity.............

Creates identity matrix (p. 618).

@implode ............

Creates sym from lower triangle of square matrix (p. 618).

@makediagonal ...

Creates a square matrix with ones down a specified diagonal and

zeros elsewhere (p. 621).

matplace ..............

Places matrix object in another matrix object (p. 622).

mtos ....................

Converts a matrix object to series or group (p. 622).

@permute............

Permutes the rows of the matrix (p. 624).

@resample...........

Randomly draws from the rows of the matrix (p. 625).

@rowextract ..........

Extracts rowvector from matrix object (p. 625).

rowplace ..............

Places a rowvector in matrix object (p. 626).

@rows .................

Returns the number of rows in matrix object (p. 626).

stom ....................

Converts series or group to vector or matrix after removing obser-

vations with NAs (p. 627).

stomna.................

Converts series or group to vector or matrix without removing

observations with NAs (p. 627).

@subextract.........

Extracts submatrix from matrix object (p. 628).

@transpose ..........

Transposes matrix object (p. 630).

Matrix Function and Command Summary—45

@unitvector..........

Extracts column from an identity matrix (p. 630).

@vec ....................

Stacks columns of a matrix object (p. 630).

@vech ..................

Stacks the lower triangular portion of matrix by column (p. 631).

Matrix Algebra Functions

@cholesky............

Computes Cholesky factorization (p. 611).

@cond..................

Calculates the condition number of a square matrix or sym

(p. 612).

@det ....................

Calculate the determinant of a square matrix or sym (p. 615).

@eigenvalues .......

Returns a vector containing the eigenvalues of a sym (p. 615).

@eigenvectors ......

Returns a square matrix whose columns contain the eigenvectors

of a matrix (p. 616).

@inner .................

Computes the inner product of two vectors or series, or the inner

product of a matrix object (p. 619).

@inverse ..............

Returns the inverse of a square matrix object or sym (p. 620).

@issingular ..........

Returns 1 if the square matrix or sym is singular, and 0 otherwise

(p. 620).

@kronecker..........

Computes the Kronecker product of two matrix objects (p. 620).

@norm.................

Computes the norm of a matrix object or series (p. 623).

@outer .................

Computes the outer product of two vectors or series, or the outer

product of a matrix object (p. 623).

@rank ..................

Returns the rank of a matrix object (p. 624).

@solvesystem .......

Solves system of linear equations, Mx = v , for x (p. 626).

@svd....................

Performs singular value decomposition (p. 629).

@trace..................

Computes the trace of a square matrix or sym (p. 629).

Matrix Descriptive Statistics Functions

@cor ....................

Computes correlation between two vectors, or between the col-

umns of a matrix (p. 614).

@cov....................

Computes covariance between two vectors, or between the col-

umns of a matrix (p. 614).

Category

Matrix Element Support

Basic Mathematical Functions (p. 575)

All, except for “@inv”

Special Functions (p. 580)

All

Trigonometric Functions (p. 583)

All

Statistical Distribution Functions (p. 584)

All