lu                  package:Matrix                  R Documentation

_T_r_i_a_n_g_u_l_a_r _D_e_c_o_m_p_o_s_i_t_i_o_n _o_f _a _S_q_u_a_r_e _M_a_t_r_i_x

_D_e_s_c_r_i_p_t_i_o_n:

     Computes triangular decompositions of matrices.

_U_s_a_g_e:

     lu(x, ...)

_A_r_g_u_m_e_n_t_s:

       x: a matrix. No missing values or IEEE special values are
          allowed. 

     ...: additional arguments, such as choosing lower or upper
          triangular factors in the Hermitian case. 

_D_e_t_a_i_l_s:

     This is a generic function with special methods for different
     types of matrices. Use `methods("lu")' to list all the methods for
     the `lu' generic.

_V_a_l_u_e:

     a representation of a triangular decomposition of `x'.

_R_e_f_e_r_e_n_c_e_s:

     Golub, G., and Van Loan, C. F. (1989). Matrix Computations, 2nd
     edition, Johns Hopkins, Baltimore.

_E_x_a_m_p_l_e_s:

     x <- Matrix( rnorm(9), 3, 3)
     lu(x)

