[igraph] Missing edges in graph objects

[Khanna, Aditya [MED]]

Hello,

I have a network dataset where a number of dyads are unobserved. Is it possible 
to designate edges as missing in igraph objects? I have seen something similar 
in the network package, but I am trying to assess if a faster routine is 
available within igraph?

Thanks,
Aditya

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