Grocer Function

NAME

invvech - inverse of vech

CALLING SEQUENCE

[xi]=invvech(x,nr)

PARAMETERS

Input

Output

DESCRIPTION

Retrieves from a matrix vectorized by vech the original matrix

EXAMPLE

a=grand(5,2,'nor',0,1);b=vech(a'*a);c=invvech(b,2)

C is equal to a'*a

AUTHOR

Eric Dubois 2002