pc                  package:exonmap                  R Documentation

_S_i_m_p_l_e _p_a_r_i_w_i_s_e _c_o_m_p_a_r_i_s_o_n_s _o_n _e_x_o_n _e_x_p_r_e_s_s_i_o_n _d_a_t_a

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

     Get fold change t test p score for each probeset between a pair of
     arrays.

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

      
      pc(x,group,members)
      fc(object)
      tt(object)

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

       x: expression data 

   group: the column to select on 

 members: vector of length 2 of column entries to compare between 

  object: a pairwise comparison object of class 'PC' as produced by
          'pc'

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

     Takes the expression data in x, use the column named 'group' in
     its phenotypic data and compare between the two groups of arrays
     defined by 'members'. fc,tt can be used to extract the fold chages
     and p-scores out of the resultant object.

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

     A PC object

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

     Crispin Miller

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

     <URL:  http://bioinformatics.picr.man.ac.uk/>

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

     'group.indices'

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

      
       ## Not run: 
         r <- pc(exprs,"group",c("a",b"))
         fc(r)[1:1000]
         tt(r)[1:1000]
       
     ## End(Not run)

