corMatrix.reStruct           package:nlme           R Documentation

_E_x_t_r_a_c_t _C_o_r_r_e_l_a_t_i_o_n _M_a_t_r_i_x _f_r_o_m _C_o_m_p_o_n_e_n_t_s _o_f _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:

     This method function extracts the correlation matrices
     corresponding to the 'pdMat' elements of 'object'.

_U_s_a_g_e:

     ## S3 method for class 'reStruct':
     corMatrix(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 list with components given by the correlation matrices
     corresponding to the elements of 'object'.

_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:

     'as.matrix.reStruct', 'reStruct', 'pdMat'

_E_x_a_m_p_l_e_s:

     data(Orthodont)
     rs1 <- reStruct(pdSymm(diag(3), ~age+Sex, data = Orthodont))
     corMatrix(rs1)

