glyp                   package:pad                   R Documentation

_P_A_D  -  _G_l_y_p_h_o_s_a_t_e _d_a_t_a

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

     The 'glyp' data frame has 54 rows and 4 columns.

     This data-set records the results of an experiment to investigate
     the relationship between root length of safflower plants and the
     concentration of glyphosate (a weed-killer) introduced into the
     water-supply.

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

     data(glyp)

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

     This data frame contains the following columns:

     _c_o_n_c {a numeric vector with glyphosate concentration in water
          supply a numeric vector with glyphosate concentration in
          water supply eqnnormal-bracket10bracket-normal

     _w_a_t_e_r a factor with the type of water to which glyphosate was
          added: '1' destilled water, '2' tap water

     _r_e_p_l_i_c_a_t_e a factor with levels corresponding to replicate
          experiment started on dates respectively. Note that control
          runs with zero glyphosate were also duplicated on each of the
          three dates.

     _l_e_n_g_t_h a numeric vector with total root length of 15 safflower
          plants

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

     Supplid by Prof P. Diggle (Lancaster University, UK) from an
     experiment conducted by CSIRO Centre for Irrigation Research,
     Griffith, New South wales, Australia

