Arc diagram with accepting singleton vertices

[etheleon]

Previously arcplot only generates a node if its reflected in the edgelist but this leaves out singleton nodes if present in the graph. Proposed new arguement vertices will accept a vector of vertex names corresponding with that in the edgelist. Similar to how igraph's graph.data.frame works

[gastonstat]

I added your suggested changes. Would you mind sharing an example of a graph with singleton nodes and the use of the argument vertices?

[etheleon]

No prob heres the dput output for the igraph object structure(list(15, FALSE, c(13, 13, 13, 13, 14, 13, 13, 13, 13, 13, 8, 8, 8, 8, 11, 6, 12, 9, 14, 5, 5, 5, 7, 11, 9, 14, 6, 6, 6, 11, 12, 12, 14, 9, 9, 9, 10, 11, 14, 14, 14, 4, 4, 1, 2, 11, 11), c(5, 6, 12, 9, 13, 4, 0, 1, 7, 11, 6, 1, 2, 7, 8, 5, 5, 5, 5, 4, 0, 1, 5, 5, 6, 6, 4, 0, 1, 6, 7, 11, 9, 4, 0, 1, 9, 9, 4, 0, 1, 0, 1, 0, 1, 7, 10), c(43, 44, 41, 42, 20, 21, 19, 27, 28, 26, 15, 22, 11, 12, 10, 13, 34, 35, 33, 17, 24, 36, 23, 29, 45, 14, 37, 46, 16, 30, 31, 6, 7, 5, 0, 1, 8, 3, 9, 2, 39, 40, 38, 18, 25, 32, 4), c(43, 41, 20, 27, 34, 6, 39, 44, 42, 21, 28, 11, 35, 7, 40, 12, 19, 26, 33, 5, 38, 15, 22, 17, 23, 16, 0, 18, 10, 24, 29, 1, 25, 13, 45, 30, 8, 14, 36, 37, 3, 32, 46, 31, 9, 2, 4), c(0, 0, 1, 2, 2, 4, 7, 11, 12, 16, 21, 22, 28, 31, 40, 47), c(0, 7, 15, 16, 16, 21, 28, 33, 37, 38, 42, 43, 45, 46, 47, 47), list(c(1, 0, 1), structure(list(), .Names = character(0)), structure(list(name = c("1-100", "101-200", "201-300", "301-400", "401-500", "501-600", "601-700", "701-800", "801-900", "901-1000", "1001-1100", "1101-1200", "1201-1300", "1301-1400", "1401-1500" ), readnum = c(2L, 3L, 2L, 2L, 5L, 16L, 14L, 12L, 22L, 14L, 7L, 29L, 30L, 30L, 12L)), .Names = c("name", "readnum")), structure(list(shared = c("6", "1", "2", "1", "1", "1", "1", "1", "3", "3", "1", "1", "2", "1", "1", "2", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "2", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1")), .Names = "shared"))), class = "igraph")