if(requireNamespace("igraph", quietly=TRUE)) {
# Graph6 symbols
sampleg6
igraph_from_text(sampleg6)
# Sparse6 symbols
s6 <- c(":DgXI@G~", ":DgWCgCb")
igraph_from_text(s6)
# Digraph6 symbol
d6 <- "&N????C??D?_G??C?????_?C_??????C??Q@O?G?"
igraph_from_text(d6)
}
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