

lmeScale(nlme)                               R Documentation

_S_c_a_l_e _f_o_r _l_m_e _O_p_t_i_m_i_z_a_t_i_o_n

_D_e_s_c_r_i_p_t_i_o_n_:

     This function calculates the scales to be used for each
     coefficient estimated through an `ms' optimization in
     the `lme' function. If all initial values are zero, the
     scale is set to one for all coefficients; else, the
     scale for a coefficient with non-zero initial value is
     equal to the inverse of its initial value and the scale
     for the coefficients with initial value equal to zero
     is set to the median of the non-zero initial value
     coefficients.

_U_s_a_g_e_:

     lmeScale(start)

_A_r_g_u_m_e_n_t_s_:

   start: the starting values for the coefficients to be
          estimated.

_V_a_l_u_e_:

     a vector with the scales to be used in `ms' for esti-
     mating the coefficients.

_A_u_t_h_o_r_(_s_)_:

     Jose Pinheiro and Douglas Bates

_S_e_e _A_l_s_o_:

     `ms'

