ggahomologyLL2HGID        package:ggahomology        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_e_n_t_i_f_i_e_r_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 _G_a_l_l_u_s _g_a_l_l_u_s

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

     R environments that provides mappings between public database
     identifiers and internal HomoloGeneIDs (HGID) used by NCBI to
     represent sequences for Gallus gallus. Public database identifiers
     include Entrez Gene identifiers (LL) and GenBank Accesion/RefSeq
     numbers (ACC).

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

     Each R environment provides mapping between either HomoloGeneIds
     and database identifiers. or the converse. The mapping direction
     is indicated by the name of the environment. For instance,
     ggahomologyACC2HGID provides mappings between GenBank accession
     numbers and HomoloGeneIds.

     For each environment, a given identifier will map to a named
     vector of identifiers. 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 Tue Nov 21 18:37:08 2006

_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(ggahomologyLL2HGID)
             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]
                     }
             }

