knots                 package:locfit                 R Documentation

_E_x_t_r_a_c_t_i_o_n _o_f _f_i_t-_p_o_i_n_t _i_n_f_o_r_m_a_t_i_o_n _f_r_o_m _a _L_o_c_f_i_t _o_b_j_e_c_t.

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

     Extracts information, such as fitted values, influence functions
     from a '"locfit"' object.

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

     knots(x, tr, what, delete.pv, ...)

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

       x: Fitted object from 'locfit()'. 

      tr: Back transformation. Default is the invers link function from
          the Locfit object. 

    what: What to return; default is 'c("x","coef","h","nlx")'. Allowed
          fields are 'x' (fit points); 'coef' (fitted values); 'f1'
          (local slope); 'nlx' (length of the weight diagram); 'nlx1'
          (estimated derivative of 'nlx'); 'se' (standard errors);
          'infl' (influence function); 'infla' (slope of influence
          function); 'lik' (maximixed local log-likelihood and local
          degrees of freedom); 'h' (bandwidth) and 'deg' (degree of
          fit). 

delete.pv: If 'T', pseudo-vertices are deleted.

     ...: not used.

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

     A matrix with one row for each fit point. Columns correspond to
     the specified 'what' vector; some fields contribute multiple
     columns.

