intensity                package:pgam                R Documentation

_U_t_i_l_i_t_y _f_u_n_c_t_i_o_n

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

     Apply spectral decomposition to its argument.

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

     intensity(w, x)

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

       w: frequency values

       x: time series

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

     The function apllies the spectral decomposition to the time series
     according to the following expression

           ((sum(x*cos(w*t)))^{2}+(sum(x*cos(w*t)))^{2})/n

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

     Decomposed series.

_N_o_t_e:

     This function is not intended to be called directly.

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

     Washington Leite Junger 
      wjunger@ims.uerj.br

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

     Box, G., Jenkins, G., Reinsel, G. (1994) Time Series Analysis :
     Forecasting and Control. 3rd edition, Prentice Hall, New Jersey.

     Diggle, P. J. (1989) Time Series : A Biostatistical Introduction.
     Oxford University Press, Oxford.

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

     'pgam', 'periodogram'

