get.array.indices         package:simpleaffy         R Documentation

_f_i_n_d _a_r_r_a_y_s _i_n _a_n _A_f_f_y_B_a_t_c_h _o_b_j_e_c_t _d_e_f_i_n_e_d _b_y _t_h_e_i_r _p_h_e_n_o_D_a_t_a

_D_e_s_c_r_i_p_t_i_o_n:

     Given an 'AffyBatch' object, looks at its phenoData slot to find
     the factor, or column specified by 'group' and searches that
     column for entries supplied in 'members'. Returns the indices of
     these rows. For example, in a six chip AffyBatch object, x,  with
     a column 'treatment' containing 'c','c',t1','t2','t1','t2', a call
     to 'get.array.indices(x,\"treatment\",c(\"c\",\"t1\"))' would
     return c(1,2,3,5).

_U_s_a_g_e:

     get.array.indices(x,group,members)

_A_r_g_u_m_e_n_t_s:

       x: An 'exprSet' or 'AffyBatch' object 

   group: The name of the pData column to use. 

 members: The labels within the pData column to match against. 

_A_u_t_h_o_r(_s):

     Crispin J Miller

_S_e_e _A_l_s_o:

_E_x_a_m_p_l_e_s:

       ## Not run: 
         indices3 <- get.array.indices(eset.rma,"group","A")
       
     ## End(Not run)