pdIdent-class             package:Matrix             R Documentation

_C_l_a_s_s "_p_d_I_d_e_n_t"

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

     A class of parameterized positive-definite matrices that are
     multiples of the identity matrix.

_O_b_j_e_c_t_s _f_r_o_m _t_h_e _C_l_a_s_s:

     Objects can be created by calls of the form 'new("pdIdent", ...)'
     or by calls to the constructor function 'pdIdent'.

_S_l_o_t_s:

     '_f_o_r_m': Object of class '"formula", from class "pdMat"' an
          optional formula used to generate the object.

     '_N_a_m_e_s': Object of class '"character", from class "pdMat"' row
          (and column) names for the matrix.

     '_p_a_r_a_m': Object of class '"numeric", from class "pdMat"' the
          unconstrained, numeric parameter vector of length 'Ncol'. 
          The elements of the parameter vector are the logarithms of
          the square roots of the diagonal elements of the matrix. 

     '_N_c_o_l': Object of class '"integer", from class "pdMat"' the number
          of rows and columns in the matrix. 

     '_f_a_c_t_o_r': Object of class '"matrix", from class "pdMat"' a
          square-root factor of the matrix - also a diagonal matrix.

     '_l_o_g_D_e_t': Object of class '"numeric", from class "pdMat"' the
          logarithm of the absolute value of the determinant of the
          factor.

_E_x_t_e_n_d_s:

     Class '"pdMat"', directly.

_M_e_t_h_o_d_s:

     _c_o_e_f 'signature(x = "pdIdent")': extract the parameters.

     _c_o_e_f<- 'signature(object = "pdIdent", value = "numeric")': assign
          the parameters.

     _c_o_e_r_c_e 'signature(from = "pdIdent", to = "matrix")': extract the
          matrix.

     _c_o_r_M_a_t_r_i_x 'signature(object = "pdIdent")': extract the correlation
          matrix. 

     _d_i_m 'signature(x = "pdIdent")': extract the dimensions.

     _i_s_I_n_i_t_i_a_l_i_z_e_d 'signature(object = "pdIdent")': check if
          initialized.

     _l_o_g_D_e_t 'signature(object = "pdIdent", covariate = "missing")':
          return the logarithm of the determinant of the matrix.

     _s_o_l_v_e 'signature(a = "pdIdent", b = "missing")': invert the matrix
          returning a 'pdIdent' object.

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

     'pdMat-class'

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

