exprSet2-class             package:limma             R Documentation

_E_x_p_r_e_s_s_i_o_n _S_e_t - _c_l_a_s_s

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

     A class for storing intensity values from microarray experiments.
     This class is similar to 'exprSet'.

     This class is not currently used in the limma package. It is an
     experimental class to investigate the possibility of a unified
     data class structure for single-channel and log-ratio analyses of
     spotted microarray data.

_S_l_o_t_s:

     _e_x_p_r_e_s_s_i_o_n_s 'matrix' containing intensity data on log-2 scale. For
          two-color arrays, odd columns will usually correspond to
          channel 1 (green) and even columns to channel 2 (red) for
          different arrays.

     _w_e_i_g_h_t_s 'matrix' containing non-negative quality weights

     _t_a_r_g_e_t_s 'data.frame' containing factors corresponding to the
          columns of 'expressions'

     _p_r_o_b_e_s 'data.frame' containing gene IDs or annotation information.
          Should have same number of rows as 'expression'

     _p_r_i_n_t_e_r 'list' containing information about the printing process

     _n_o_t_e_s 'character'

_M_e_t_h_o_d_s:

     'exprSet2' objects inherit a 'show' method from the virtual class
     'LargeDataObject', which means that 'exprSet2' objects will print
     in a compact way.

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

     Gordon Smyth

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

     2.Classes gives an overview of all the classes defined by this
     package.

     'exprSet' is the corresponding class in the Biobase package.

