threshold                package:rwt                R Documentation

_t_h_r_e_s_h_o_l_d_i_n_g _f_u_n_c_t_i_o_n

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

     Thresholds the input signal 'y' with the threshold value 'thld'.

_U_s_a_g_e:

     hardTh(y, thld)
     softTh(y, thld)

_A_r_g_u_m_e_n_t_s:

       y: 1D or 2D signal to be thresholded

    thld: Threshold value to be applied

_V_a_l_u_e:

       x: Thresholded output

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

     P. Roebuck, roebuck@mdanderson.org

_R_e_f_e_r_e_n_c_e_s:

     "De-noising via Soft-Thresholding" Tech. Rept. Statistics,
     Stanford, 1992. D.L. Donoho.

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

     sig <- makesig(SIGNAL.WERNER.SORROWS, 8);
     thld <- 1;
     x <- rwt:::hardTh(sig$x, thld);

