quercusvm           package:ecespa           R Documentation(latin1)

_A_l_i_v_e _a_n_d _d_e_a_d _o_a_k _t_r_e_e_s

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

     Locations of alive and dead oak trees (_Quercus robur_)  in a
     secondary wood in Urkiola Natural Park (Basque country, north of
     Spain).  This is part of a more extensive dataset collected and
     analysed by Laskurain (2008). The coordinates of the trees are
     given in meters.

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

     data(quercusvm)

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

     An object of class "ppp"  representing the point pattern of tree
     locations. Entries include

     _x Cartesian x-coordinate of tree.

     _y Cartesian y-coordinate of tree. 

     _m_a_r_k_s factor with two levels indicating the status of each tree (1
          = "alive", 0 = "dead").

     See 'ppp'  for details of the format of a ppp object.

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

     Laskurain, N. A. (2008) _Dinamica espacio-temporal de un bosque
     secundario en el Parque Natural de Urkiola (Bizkaia)._ Tesis
     Doctoral. Universidad del Pais Vasco /Euskal Herriko
     Unibertsitatea.

