wd3D.object            package:wavethresh            R Documentation

_T_h_r_e_e-_d_i_m_e_n_s_i_o_n_a_l _w_a_v_e_l_e_t _o_b_j_e_c_t

_D_e_s_c_r_i_p_t_i_o_n:

     These are objects of classes 

     wd3D

     They contain the 3D discrete wavelet transform of a 3D array (with
     each dimension being the same dyadic size).

_D_e_t_a_i_l_s:

     To retain your sanity the wavelet coefficients at any resolution
     level in directions, GGG, GGH, GHG, GHH, HGG, HGH, HHG should be
     extracted by the 'accessD'() function and inserted using the
     'putD' function rather than by the `$' operator.

_V_a_l_u_e:

     The following components must be included in a legitimate `wd'
     object. 

       a: a three-dimensional array containing the 3D discrete wavelet
          coefficients. The coefficients are stored in a pyramid
          structure for efficiency.

 nlevels: The number of levels in the pyramidal decomposition that
          produces the coefficients. If you raise 2 to the power of
          nlevels you get the number of data points used in each
          dimension of the decomposition.

filter.number: the number of the wavelet family that did the DWT.

  family: the family of wavelets that did the DWT.

    date: the date that the transform was computed.

_g_e_n_e_r_a_t_i_o_n:

     This class of objects is returned from the wd3D function to
     represent a three-dimensional DWT of a 3D array. Other functions
     return an object of class wd3D.

_m_e_t_h_o_d_s:

     The wd3D class of objects has methods for the following generic
     functions: 'accessD', 'print', 'putD', 'summary', 'threshold'.

_r_e_l_e_a_s_e:

     Version 3.9.6 Copyright Guy Nason 1997

_S_e_e _A_l_s_o:

     'wd3D', 'accessD.wd3D', 'print.wd3D', 'putD.wd3D',
     'putDwd3Dcheck', 'summary.wd3D', 'threshold.wd3D', 'wr3D'.

