getCovariateFormula           package:nlme           R Documentation

_E_x_t_r_a_c_t _C_o_v_a_r_i_a_t_e_s _F_o_r_m_u_l_a

_D_e_s_c_r_i_p_t_i_o_n:

     The right hand side of 'formula(object)', without any conditioning
     expressions (i.e. any expressions after a '|' operator) is
     returned as a one-sided formula.

_U_s_a_g_e:

     getCovariateFormula(object)

_A_r_g_u_m_e_n_t_s:

  object: any object from which a formula can be extracted.

_V_a_l_u_e:

     a one-sided formula describing the covariates associated with
     'formula(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:

     'getCovariate'

_E_x_a_m_p_l_e_s:

     getCovariateFormula(y ~ x | g)
     getCovariateFormula(y ~ x)