compress.imwd           package:wavethresh           R Documentation

_C_o_m_p_r_e_s_s _a (_t_h_r_e_s_h_o_l_d_e_d) _i_m_w_d _c_l_a_s_s _o_b_j_e_c_t _b_y _r_e_m_o_v_i_n_g _z_e_r_o_e_s.

_D_e_s_c_r_i_p_t_i_o_n:

     Compress a (thresholded) 'imwd' class object by removing zeroes.

_U_s_a_g_e:

     compress.imwd(imwd, verbose=FALSE, ...) 

_A_r_g_u_m_e_n_t_s:

    imwd: Object to compress. Compression only does anything on
          'thresholded' 'imwd.object'. 

 verbose: If this is true then report on compression activity.

     ...: any other arguments

_D_e_t_a_i_l_s:

     Thresholded 'imwd' objects are usually very large and contain many
     zero elements. This function compresses these objects into smaller
     'imwd' objects by using the 'compress.default' function which
     removing the zeroes. This function is a method for the generic
     function 'compress' for class 'imwd' objects. It can be invoked by
     calling 'compress' for an object of the appropriate class, or
     directly by calling 'compress.imwd' regardless of the class of the
     object

_V_a_l_u_e:

     An object of type "'imwdc'" representing the compressed imwd
     object.

_R_E_L_E_A_S_E:

     Version 3.5.3 Copyright Guy Nason 1994

_S_e_e _A_l_s_o:

     'compress', 'compress.default', 'imwd', 'imwd.object',
     'imwdc.object', 'threshold.imwd'.

_E_x_a_m_p_l_e_s:

     #
     # The user shouldn't need to use this function directly as the
     # this-is-escaped-codenormal-bracket50bracket-normal function calls it
     # automatically.
     #

