pdCompSymm-class            package:lme4            R Documentation

_C_l_a_s_s "_p_d_C_o_m_p_S_y_m_m"

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

     A class of parameterized positive-definite symmetric matrices that
     have compound symmetry.  That is, the diagonal entries are
     constant and the off-diagonal entries are constant.

_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("pdCompSymm",
     ...)' or by calls to the constructor `pdCompSymm(...)'

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

     `_p_a_r_a_m': Object of class `"numeric"' - a parameter vector of
          length 2

     `_n_c_o_l': Object of class `"integer"' - the number of columns (and
          rows) in the matrix.

     `_f_o_r_m': Object of class `"formula", from class "pdMat"' - an
          optional formula relating the object to a model matrix. 

     `_N_a_m_e_s': Object of class `"character", from class "pdMat"' -
          dimnames for the matrix

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

     Class `"pdMat"', directly.

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

     _c_o_e_f `signature(x = "pdCompSymm")': get the parameter vector 

     _c_o_e_f<- `signature(object = "pdCompSymm", value = "numeric")': set
          the parameter vector

     _c_o_e_f<- `signature(object = "pdCompSymm", value = "matrix")': set
          the parameter vector from a model matrix

     _c_o_e_r_c_e `signature(from = "pdCompSymm", to = "matrix")': get the
          positive-definite symmetric matrix represented by the object.

     _c_o_r_M_a_t_r_i_x `signature(object = "pdCompSymm")': get the matrix
          represented by the object as a correlation matrix (with
          standard deviations)

     _d_i_m `signature(x = "pdCompSymm")': get the dimensions of the
          matrix represented by the object.

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

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

     _p_d_F_a_c_t_o_r `signature(object = "pdCompSymm")': get a square root
          factor of the matrix represented by the object.

     _p_d_M_a_t_r_i_x `signature(object = "pdCompSymm", factor = "logical")':
          get the positive-definite symmetric matrix represented by the
          object.

     _s_u_m_m_a_r_y `signature(object = "pdCompSymm")':

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

     Douglas Bates bates@stat.wisc.edu and Saikat DebRoy
     saikat@stat.wisc.edu

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

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

