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 yet used in the limma package but is intended to
     unify single-channel and log-ratio analyses of spotted microarray
     data in the future.

_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.

