QRINSERT

 

 Insert a column in the QRM02QU2 factorization.

  If [Q,R] = qr(A) is the original QRM02QU2 factorization of A,

  then [Q,R] = qrinsert(Q,R,j,x) changes Q and R to be the

  factorization of the matrix obtained by inserting an extra

  column, x, before A(:,j).  (If A has n columns and j = n+1,

  then x is inserted after the last column of A.)

 

 

  See also QRM02QU2, QRDELETELN400N, PLANEROTKMG7E2.