ext                  package:Rwave                  R Documentation

_E_x_t_r_e_m_a _o_f _D_y_a_d_i_c _W_a_v_e_l_e_t _T_r_a_n_s_f_o_r_m

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

     Compute the local extrema of the dyadic wavelet transform modulus.

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

     ext(wt, scale=FALSE, plot=TRUE)

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

      wt: dyadic wavelet transform. 

   scale: flag indicating if the extrema at each  resolution will be
          plotted at the same scale. 

    plot: if set to T, displays the transform on the graphics device. 

_D_e_t_a_i_l_s:

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

     Structure containing: 

original: original signal. 

 extrema: extrema representation. 

      Sf: coarse resolution of signal. 

maxresoln: number of decomposition scales. 

      np: size of signal. 

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

     See discussions in the text of ``Practical Time-Frequency
     Analysis''.

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

     `mw', `mrecons'.

