ifft                 package:signal                 R Documentation

_I_n_v_e_r_s_e _F_F_T

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

     Matlab/Octave-compatible inverse FFT.

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

     ifft(x)

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

       x: the input array. 

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

     It uses 'fft' from the stats package as follows:

     'fft(x, inverse = TRUE)/length(x)'

     Note that it does not attempt to make the results real.

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

     The inverse FFT of the input, the same length as 'x'.

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

     Tom Short

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

     'fft'

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

     ifft(fft(1:4))

