[igraph] Adjacency list to edgelist

[anupam sinha]

Dear all,

                   I have a number of graphs in this format (adjacency list) :

PABPC4    PABPC4    EEF1A1    SETDB1    XRN1    RIF1    
AHCY         AHCY    
PSCDBP   PSCDBP    PSCD1    
ITSN2        ITSN2    WAS    RAD9A    LSM8    SYNJ2    
TICAM2     TICAM2    IL1R1    IRAK1    TRAF6    IRF3    TLR4    IL1RAP    IRAK3    IRF7    TIRAP    
ADCY3      CAMK2G    ADCY3    
ADCY6      ADCY6    CHRNA7    GNAS    RAF1    
FHL3          FHL3    ACTB    CDC25B    MAPK1    LASP1    KLF8    CTBP2    FHL2    ZNF42    SRF    CDC42EP1    PHC2    PCQAP    
TM9SF2    TM9SF2    RAB9A    

where the alphanumeric id represents the node name (gene name). The first column contains the source node and the other columns have the destination nodes. How do I convert this into an edgelist format using R implementation of igraph ? Thanks in advance for any suggestions.


Regards,


Anupam