image-methods              package:xps              R Documentation

_D_i_s_p_l_a_y _a_n _I_m_a_g_e

_D_e_s_c_r_i_p_t_i_o_n:

     Creates an image for each sample.

     _Usage_

     ' image(x, bg = FALSE, transfo = log2, col = gray((0:64)/64),
     names = "namepart", xlab = "", ylab = "", ...) '

_A_r_g_u_m_e_n_t_s:

       x: object of class 'DataTreeSet'.

      bg: logical. If 'FALSE', intensities from slot 'data' will be
          used; if 'TRUE', background intensities from slot 'bgrd' will
          be used.

 transfo: a valid function to transform the data, usually "log2", or
          "0".

     col: color range for intensities.

   names: optional vector of sample names.

     ...: optional arguments to be passed to 'image'.

_D_e_t_a_i_l_s:

     Creates an image for each array. For 'bgrd=TRUE' the distribution
     of the computed background intensities will be shown; this can be
     useful to see potential density gradients caused by hybridization
     conditions. For the computation of background intensities see
     function 'bgcorrect'; it is suggested to use 'bgcorrect.mas4' to
     identify density gradients.

     For 'names=NULL' full column names of slot 'data' will be
     displayed while for  'names="namepart"' column names will be
     displayed without name extension. If 'names' is a vector of column
     names, only these columns will displayed as image.

_N_o_t_e:

     Data must first be attached to class 'DataTreeSet' using method
     'attachInten'.

_A_u_t_h_o_r(_s):

     Christian Stratowa

_S_e_e _A_l_s_o:

     'image.dev', 'image'

