accessC.wst            package:wavethresh            R Documentation

_G_e_t _s_m_o_o_t_h_e_d _d_a_t_a _f_r_o_m _p_a_c_k_e_t _o_r_d_e_r_e_d _n_o_n-_d_e_c_i_m_a_t_e_d _w_a_v_e_l_e_t _o_b_j_e_c_t (_w_s_t)

_D_e_s_c_r_i_p_t_i_o_n:

     The smoothed data from a packet ordered non-decimated wavelet
     object (returned from 'wst') are stored in a matrix. This function
     extracts all the coefficients corresponding to a particular
     resolution level.

_U_s_a_g_e:

     accessC.wst(wst, level, aspect, ...)

_A_r_g_u_m_e_n_t_s:

     wst: Packet ordered non-decimated wavelet object from which you
          wish to extract the smoothed or original data (if the object
          is directly from a packet ordered non-decimated wavelet
          transform of some data).

   level: The level that you wish to extract. This can range from zero
          (the coarsest coefficients) to nlevels(wstobj) which returns
          the original data.

  aspect: 

     ...: 

_D_e_t_a_i_l_s:

     The 'wst' function performs a packet-ordered non-decimated wavelet
     transform. This function extracts all the father wavelet
     coefficients at a particular resolution level specified by
     'level'.

     Note that coefficients returned by this function are in
     emph{packet order}. They can be used _as is_ but for many
     applications it might be more useful to deal with the coefficients
     in packets: see the function 'getpacket.wst' for further details.

_V_a_l_u_e:

     A vector of the extracted data.

_R_e_f_e_r_e_n_c_e_s:

     Nason, G. P. and Silverman, B. W. (1994). The discrete wavelet
     transform in S. _Journal of Computational and Graphical
     Statistics_, *3*, 163-191.

_S_e_e _A_l_s_o:

     'wst', 'wst.object', 'accessC', 'getpacket.wst'

_E_x_a_m_p_l_e_s:

     #
     # Get the 3rd level of smoothed data from a decomposition
     #
     #accessC(wst(data), level=3)

