join               package:conf.design               R Documentation

_A_m_a_l_g_a_m_a_t_e _t_w_o _o_r _m_o_r_e _f_a_c_t_o_r_s.

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

     Joins two or more factors together into a single composite factor
     defining the subclasses.  In a model formula join(f1, f2, f3) is
     equivalent to f1:f2:f3.

_U_s_a_g_e:

     join(...)

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

     ...: Two or more factors or numeric vectors, or objects of mode
          list containing these kinds of component. 

_D_e_t_a_i_l_s:

     Similar in effect to paste(), which it uses.

_V_a_l_u_e:

     A single composite factor with levels made up of the distinct
     combinations of levels or values of the arguments which occur.

_S_i_d_e _E_f_f_e_c_t_s:

     None.

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

     paste, rjoin, direct.sum

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

      d1 <- conf.design(c(1,1,1), 2, treatment.names=LETTERS[1:3])
      d2 <- conf.design(c(0,1,1), 2, treatment.names=LETTERS[1:3])
      fd1d2 <- join(d1,d2)

