Kappa            package:PresenceAbsence            R Documentation

_K_a_p_p_a

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

     'Kappa' calculates Kappa and (optionally) the associated standard
     deviation from a confusion matrix.

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

     Kappa(CMX, st.dev = TRUE)

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

     CMX: a confusion matrix - output from 'cmx' 

  st.dev: a logical indicating whether the associated standard
          deviation should be calculated 

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

     The Kappa statistic summarizes all the available information in
     the confusion matrix. Kappa measures the proportion of correctly
     classified units after accounting for the probability of chance
     agreement.

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

     if 'st.dev' = FALSE, returns: 'Kappa'. 

     if 'st.dev' = TRUE, returns a dataframe where:

       [1,1]  'Kappa'     
       [1,2]  'Kappa.sd'  standard deviation of 'Kappa'

_N_o_t_e:

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

     Elizabeth Freeman eafreeman@fs.fed.us

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

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

     'cmx', 'pcc', 'sensitivity', 'specificity', 'auc'

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

     data(SIM3DATA)

     Kappa(cmx(SIM3DATA))

     Kappa(cmx(SIM3DATA),st.dev=FALSE)

