normalize.constant           package:affy           R Documentation

_S_c_a_l_e _p_r_o_b_e _i_n_t_e_n_s_i_t_i_e_s

_D_e_s_c_r_i_p_t_i_o_n:

     Scale array intensities in a 'AffyBatch'.

_U_s_a_g_e:

     normalize.AffyBatch.constant(abatch, refindex=1, FUN=mean, na.rm=TRUE)
     normalize.constant(x, refconstant, FUN=mean, na.rm=TRUE)

_A_r_g_u_m_e_n_t_s:

  abatch: an instance of the 'AffyBatch-class'.

       x: a vector of intensities on a chip (to normalize to the
          reference).

refindex: the index of the array used as a reference.

refconstant: the constant used as a reference

     FUN: A function generating a value from the intensities on an
          array. Typically 'mean' or 'median'.

   na.rm: Paramater passed to the function FUN.

_V_a_l_u_e:

     An 'AffyBatch' with an attribute "constant" holding the value of
     the factor used for scaling.

_A_u_t_h_o_r(_s):

     L. Gautier <laurent@cbs.dtu.dk>

_S_e_e _A_l_s_o:

     'AffyBatch'

