varWeights.glsStruct          package:nlme          R Documentation

_V_a_r_i_a_n_c_e _W_e_i_g_h_t_s _f_o_r _g_l_s_S_t_r_u_c_t _O_b_j_e_c_t

_D_e_s_c_r_i_p_t_i_o_n:

     If 'object' includes a 'varStruct' component, the inverse of the
     standard deviations of the variance function structure represented
     by the corresponding 'varFunc' object are returned; else, a vector
     of ones of length equal to the number of observations in the data
     frame used to fit the associated linear model is returned.

_U_s_a_g_e:

     ## S3 method for class 'glsStruct':
     varWeights(object)

_A_r_g_u_m_e_n_t_s:

  object: an object inheriting from class 'glsStruct', representing a
          list of linear model components, such as 'corStruct' and
          'varFunc' objects.

_V_a_l_u_e:

     if 'object' includes a 'varStruct' component, a vector with the
     corresponding variance weights; else, or a vector of ones.

_A_u_t_h_o_r(_s):

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

_R_e_f_e_r_e_n_c_e_s:

     Pinheiro, J.C., and Bates, D.M. (2000) "Mixed-Effects Models in S
     and S-PLUS", Springer.

_S_e_e _A_l_s_o:

     'varWeights'