probesByLL             package:annotate             R Documentation

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_t_h_e _c_o_r_r_e_s_p_o_n_d_i_n_g _v_a_l_u_e_s

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

     This  function takes the name of a platform specific annotation
     data package (e. g. "hgu95av2") and a character string for the
     name of an environment stored in the data directory and returns a
     list of vectors of character string with values of the environment
     as the names of the lists of vectors and probe ids corresponding
     to the values of the environment as values.

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

     probesByLL(baseName, what = "ENTREZID")

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

baseName: 'baseName' a character string for the name of platform
          specific annotation data package

    what: 'what' a character string for the name of the environment
          object, which is the last part of an environment name
          excluding the package name

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

     Each platform specific annotation data package has mappings
     between probe ids to other values. This function does reverse
     mappings by grouping probe ids under unique values of a given
     environmentand returns the mappings as a list.

     Values for the environment object for which the reverse mappings
     are sought must be vectors.

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

     This function returns a list of vectors of character strings with
     unique values of an environment as the names and probe ids
     corresponding to the values as values.

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

     Jianhua Zhang

_E_x_a_m_p_l_e_s:

       library("hgu95av2.db")
       tt <- probesByLL("hgu95av2", "ENTREZID")
       tt[1:4]

