readTargets              package:limma              R Documentation

_R_e_a_d _R_N_A _T_a_r_g_e_t_s _F_i_l_e

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

     Read a RNA targets file into dataframe.

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

     readTargets(file="Targets.txt", path=NULL, sep="\t", row.names="FileName")

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

    file: character string giving the name of the targets file.

    path: character string giving the directory containing the file.
          Can be omitted if the file is in the current working
          irectory.

     sep: the field separator character

row.names: character string giving header of column from which to
          obtain row names

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

     The targets file is a text file with rows corresponding to
     microarrays and columns 'Cy3' and 'Cy5' specifying which RNA
     samples are hybridized to which channel of each microarray. Other
     columns are optional.

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

     Data frame usually including columns 

     Cy3: character vector giving names of RNA samples

     Cy5: character vector giving names of RNA samples

     Character columns are not converted to factors.

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

     Gordon Smyth

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

     An overview of LIMMA functions for reading data is given in
     3.ReadingData.

