spcdisc                package:labdsv                R Documentation

_S_p_e_c_i_e_s _D_i_s_c_r_i_m_i_n_a_t_i_o_n _A_n_a_l_y_s_i_s

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

     Calculates the degree to which species are restricted to certain
     classes of classified vegetation

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

     spcdisc(x,sort=FALSE)

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

       x: a classified vegetation table returned by 'const', or
          'importance'

    sort: return in sorted order if TRUE

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

     Calculates a Shannon-Weiner information statistic on the relative
     abundance of species within classes.

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

     A vector of discrimination values.

_A_u_t_h_o_r(_s):

     David W. Roberts droberts@montana.edu <URL:
     http://ecology.msu.montana.edu/droberts>

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

     <URL: http://ecology.msu.montana.edu/labdsv/R>

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

     'const', 'importance', 'duleg', 'duarm'

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

     data(bryceveg)
     data(brycesite)
     test <- const(bryceveg,brycesite$quad)
     spcdisc(test)

