solve.reStruct             package:nlme             R Documentation

_A_p_p_l_y _S_o_l_v_e _t_o _a_n _r_e_S_t_r_u_c_t _O_b_j_e_c_t

_D_e_s_c_r_i_p_t_i_o_n:

     'Solve' is applied to each 'pdMat' component of 'a', which results
     in inverting the positive-definite matrices they represent.

_U_s_a_g_e:

     ## S3 method for class 'reStruct':
     solve(a, b, ...)

_A_r_g_u_m_e_n_t_s:

       a: an object inheriting from class 'reStruct', representing a
          random effects structure and consisting of a list of 'pdMat'
          objects.

       b: this argument is only included for consistency with the
          generic function and is not used in this method function.

     ...: some methods for this generic require additional arguments. 
          None are used in this method.

_V_a_l_u_e:

     an 'reStruct' object similar to 'a', but with the 'pdMat'
     components representing the inverses of the matrices represented
     by the components of 'a'.

_A_u_t_h_o_r(_s):

     Jose Pinheiro Jose.Pinheiro@pharma.novartis.com and Douglas Bates
     bates@stat.wisc.edu

_S_e_e _A_l_s_o:

     'solve.pdMat', 'reStruct'

_E_x_a_m_p_l_e_s:

     rs1 <- reStruct(list(A = pdSymm(diag(1:3), form = ~Score),
       B = pdDiag(2 * diag(4), form = ~Educ)))
     solve(rs1)