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hankel

Syntax

H = hankel(c)
H = hankel(c,r)

Description

H = hankel(c) returns the square Hankel matrix whose first column is c and whose elements are zero below the first anti-diagonal.

H = hankel(c,r) returns a Hankel matrix whose first column is c and whose last row is r. If the last element of c differs from the first element of r, the last element of c prevails.

Definitions

A Hankel matrix is a matrix that is symmetric and constant across the anti-diagonals, and has elements h(i,j) = p(i+j-1), where vector p = [c r(2:end)] completely determines the Hankel matrix.

Examples

collapse all

Create the Hankel matrix whose first column is c and whose last row is r.

c = 1:3;
r = 3:6;
h = hankel(c,r)
h =

     1     2     3     4
     2     3     4     5
     3     4     5     6

See Also

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Introduced before R2006a

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