blowdown                package:alr3                R Documentation

_B_l_o_w_d_o_w_n _d_a_t_a

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

     Data from the Boundary Waters Canoe Area Wilderness Blowdown.  The
     data frame blowdown includes nine species of trees, blowAPB gives
     data for aspen and paper birch, while  blowBF gives data for
     Balsam Fir only.

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

     This data frame contains the following columns:

     _D Tree diameter, in cm

     _S Proportion of basal area killed for the four species BF, C, PB,
          BS, a measure of local severity of the storm.

     _y 1 of the tree died, 0 if it survived

     _S_P_P BF= balsam fir, BS= black spruce, C= cedar, JP= jackpine, PB=
          paper birch, RP= red pine, RM= red maple, BA = black ash, A=
          aspen.

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

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

     Roy Rich

_R_e_f_e_r_e_n_c_e_s:

     S. Weisberg (2005).  _Applied Linear Regression_, third edition. 
     New York:  Wiley.

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

     data(blowBF)

