validData-methods            package:xps            R Documentation

_E_x_t_r_a_c_t _S_u_b_s_e_t _o_f _D_a_t_a

_D_e_s_c_r_i_p_t_i_o_n:

     Extracts a subset of valid data from data.frame 'data'.

     _Usage_

     ' validData(object, which = "") '

_A_r_g_u_m_e_n_t_s:

  object: object of class 'DataTreeSet'.

   which: type of probes to be returned.

_D_e_t_a_i_l_s:

     For expression arrays, 'validData' returns all the perfect match
     or mismatch   probes on the arrays the object represents as
     data.frame, i.e. 'which' can have  the following values:

         'pm':    perfect match probes.
         'mm':    mismatch probes.
         'both':  both perfect match and mismatch probes.

     For exon arrays, 'validData' returns the probes of the different
     exon levels as  data.frame, i.e. 'which' can have one of the
     following values:

         'core':          probesets supported by RefSeq and full-length GenBank transcripts.
         'metacore':      core meta-probesets.
         'extended':      probesets with other cDNA support.
         'metaextended':  extended meta-probesets.
         'full':          probesets supported by gene predictions only.
         'metafull':      full meta-probesets.
         'affx':          standard AFFX controls.
         'all':           combination of above.
         'genomic':       genomic background probes.
         'antigenomic':   antigenomic background probes.

_V_a_l_u_e:

     A 'data.frame'.

_A_u_t_h_o_r(_s):

     Christian Stratowa

_S_e_e _A_l_s_o:

     'pm', 'mm'

