diag

(/tools/hpmatlab/toolbox/matlab/elmat/diag.m)

Help text

DIAG	Create or extract diagonals.
	If V is a row or column vector with N components,
 	DIAG(V,K) is a square matrix of order N+ABS(K) with the
 	elements of V on the K-th diagonal. K = 0 is the main
 	diagonal, K > 0 is above the main diagonal and K < 0 is
 	below the main diagonal. DIAG(V) simply puts V on the
 	main diagonal. For example,
 	DIAG(-M:M) + DIAG(ONES(2*M,1),1) + DIAG(ONES(2*M,1),-1)
 	produces a tridiagonal matrix of order 2*M+1.
 
 	If X is a matrix, DIAG(X,K) is a column vector formed from
 	the elements of the K-th diagonal of X. DIAG(X) is the main
 	diagonal of X. DIAG(DIAG(X)) is a diagonal matrix.

Cross-Reference Information

corrcoef       /tools/hpmatlab/toolbox/matlab/datafun/corrcoef.m
ss2zp          /tools/hpmatlab/toolbox/signal/ss2zp.m
tzero          /tools/hpmatlab/toolbox/signal/tzero.m
zp2ss          /tools/hpmatlab/toolbox/signal/zp2ss.m