

smooth {eda}                                 R Documentation

_M_e_d_i_a_n _S_m_o_o_t_h_i_n_g

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

     This function applies Tukey's smoothing method 3RSR to
     `x'.

_U_s_a_g_e_:

     smooth(x)

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

       x: a vector or time series

_V_a_l_u_e_:

     A vector or time series containing the smoothed values.
     Note that there are other smoothing methods which pro-
     vide rather better results. This one was designed for
     hand calculations.

_N_o_t_e_:

     3R stands for Repeated running `median's of 3.

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

     Tukey, J. W. (1977).  Exploratory Data Analysis, Read-
     ing Massachusetts: Addison-Wesley.

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

     `lowess'; `loess', `supsmu' and `smooth.spline' in
     package `modreg'.

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

     library(eda)
     data(presidents)
     presidents[is.na(presidents)] <- 0
     plot(presidents)
     lines(smooth(presidents))

