xlahomologyLL2HGID        package:xlahomology        R Documentation

_M_a_p_p_i_n_g_s _b_e_t_w_e_e_n _p_u_b_l_i_c _d_a_t_a_b_a_s_e _i_d_s _a_n_d _N_C_B_I'_s _I_n_t_e_r_n_a_l
_H_o_m_o_l_o_G_e_n_e_I_D_s _f_o_r _X_e_n_o_p_u_s _l_a_e_v_i_s

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

     R environments that provides mappings between public database ids
     and internal HomoloGeneIDs (HGID) used by NCBI to represent
     sequences for Xenopus laevis. Public database ids include
     LocusLink ids (LL) and GenBank Accesion/RefSeq numbers (ACC).

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

     Each R environment provides mapping between either HomoloGeneIds
     and database ids, or the converse. The mapping direction is
     indicated by the name of the environment. For instance,
     xlahomologyACC2HGID provides mappings between GenBank accession
     numbers and HomoloGeneIds.

     For each environment, a given id will map to a named vector of
     ids, the names of which are the NCBI code for that organism.

     Mappings contained were based on data provided by HomoloGene.

     HomoloGene:<URL: 
     ftp://ftp.ncbi.nih.gov/pub/HomoloGene/old/hmlg.ftp>. Built:
     HomoloGene built date not available

     Packagebuilt Thu Nov  3 10:06:19 2005

_R_e_f_e_r_e_n_c_e_s:

     <URL: http://www.ncbi.nih.gov/entrez/query.fcgi?db=homologene>

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

         require("annotate") || stop("annotate unavailable")
         xx <- as.list(xlahomologyLL2HGID)
             if(length(xx) > 5){
                     # Get the value of the first key
                     xx[2]
                     # Get the value for a few keys
                     if(length(xx) >= 3){
                             xx[2:4]
                     }
             }

