logDet.reStruct             package:nlme             R Documentation

_E_x_t_r_a_c_t _r_e_S_t_r_u_c_t _L_o_g-_D_e_t_e_r_m_i_n_a_n_t_s

_D_e_s_c_r_i_p_t_i_o_n:

     Calculates, for each of the 'pdMat' components of 'object', the
     logarithm of the determinant of a square-root factor.

_U_s_a_g_e:

     ## S3 method for class 'reStruct':
     logDet(object, ...)

_A_r_g_u_m_e_n_t_s:

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

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

_V_a_l_u_e:

     a vector with the log-determinants of square-root factors of the
     'pdMat' components of 'object'.

_A_u_t_h_o_r(_s):

     Jose Pinheiro

_S_e_e _A_l_s_o:

     'reStruct', 'pdMat', 'logDet'

_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)))
     logDet(rs1)

