Wheat2                 package:nlme                 R Documentation

_W_h_e_a_t _Y_i_e_l_d _T_r_i_a_l_s

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

     The `Wheat2' data frame has 224 rows and 5 columns.

_F_o_r_m_a_t:

     This data frame contains the following columns:

     _B_l_o_c_k an ordered factor with levels `4' < `2' < `3' < `1'

     _v_a_r_i_e_t_y a factor with levels `ARAPAHOE'  `BRULE'  `BUCKSKIN' 
          `CENTURA'  `CENTURK78'  `CHEYENNE'  `CODY'  `COLT'  `GAGE' 
          `HOMESTEAD'  `KS831374'  `LANCER'  `LANCOTA'  `NE83404' 
          `NE83406'  `NE83407'  `NE83432'  `NE83498'  `NE83T12' 
          `NE84557'  `NE85556'  `NE85623'  `NE86482'  `NE86501' 
          `NE86503'  `NE86507'  `NE86509'  `NE86527'  `NE86582' 
          `NE86606'  `NE86607'  `NE86T666'  `NE87403'  `NE87408' 
          `NE87409'  `NE87446'  `NE87451'  `NE87457'  `NE87463' 
          `NE87499'  `NE87512'  `NE87513'  `NE87522'  `NE87612' 
          `NE87613'  `NE87615'  `NE87619'  `NE87627'  `NORKAN' 
          `REDLAND'  `ROUGHRIDER'  `SCOUT66'  `SIOUXLAND'  `TAM107' 
          `TAM200'  `VONA' 

     _y_i_e_l_d a numeric vector

     _l_a_t_i_t_u_d_e a numeric vector

     _l_o_n_g_i_t_u_d_e a numeric vector

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

_S_o_u_r_c_e:

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

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

     data(Wheat2)

