fcFilter-methods             package:xps             R Documentation

_F_o_l_d-_C_h_a_n_g_e _F_i_l_t_e_r

_D_e_s_c_r_i_p_t_i_o_n:

     This method initializes the Fold-Change Filter. 
      The fold-change is determined by the mean value of group 2
     divided by the mean value of group 1. 
      The Fold-Change Filter flags all rows with: 'flag = (fc >=
     cutoff)'

     _Usage_

     'fcFilter(object)' 
      'fcFilter(object, value)<-'

_A_r_g_u_m_e_n_t_s:

  object: object of class 'UniFilter'.

   value: numeric vector 'c(cutoff, direction)'

_D_e_t_a_i_l_s:

     The method 'fcFilter' initializes the following parameters:

         'cutoff':     the cutoff level for the filter.
         'direction':  'direction="both"' (default): select up and downregulated genes.
                       'direction="up"': select upregulated genes only.
                       'direction="down"': select downregulated genes only.

_V_a_l_u_e:

     An initialized 'UniFilter' object.

_A_u_t_h_o_r(_s):

     Christian Stratowa

_E_x_a_m_p_l_e_s:

     unifltr <- UniFilter()
     fcFilter(unifltr) <- c(1.5,"both")
     str(unifltr)

