

compareFits(nlme)                            R Documentation

_C_o_m_p_a_r_e _F_i_t_t_e_d _O_b_j_e_c_t_s

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

     The columns in `object1' and `object2' are put together
     in matrices which allow direct comparison of the indi-
     vidual elements for each object. Missing columns in
     either object are replaced by `NA's.

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

     compareFits(object1, object2, which)

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

object1,object2: data frames, or matrices, with the same row
          names, but possibly different column names. These
          will usually correspond to coefficients from fit-
          ted objects with a grouping structure (e.g. `lme'
          and `lmList' objects).

   which: an optional integer or character vector indicating
          which columns in `object1' and `object2' are to be
          used in the returned object. Defaults to all
          columns.

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

     a three-dimensional array, with the third dimension
     given by the number of unique column names in either
     `object1' or `object2'. To each column name there cor-
     responds a matrix with as many rows as the rows in
     `object1' and two columns, corresponding to `object1'
     and `object2'. The returned object inherits from class
     `compareFits'.

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

     Jose Pinheiro and Douglas Bates

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

     `plot.compareFits', `pairs.compareFits', `comparePred',
     `coef', `random.effects'

_E_x_a_m_p_l_e_s_:

     library(nlme)
     data(Orthodont)
     fm1 <- lmList(Orthodont)
     fm2 <- lme(fm1)
     compareFits(coef(fm1), coef(fm2))

