knotR: Knot Diagrams using Bezier Curves

`k7_1` <-
structure(list(minsymvec = structure(c(-168.186575880112, -141.825378343826, 
336.401454984933, -106.547076843963, 393.505327077025, 292.996030597292
), .Names = c("handle_A9", "handle_A20", "handle_A30", "node9", 
"node30", "node41"), class = "minsymvec"), overunderobj = structure(c(12, 
3, 5, 17, 8, 20, 11, 2, 14, 15, 6, 18, 9, 21), .Dim = c(7L, 2L
)), symobj = structure(list(Mver = structure(c(9, 19, 18, 8, 
7, 6, 17, 5, 16, 15, 10, 21, 1, 11, 12, 13, 2, 14, 3, 4), .Dim = c(10L, 
2L)), xver = 20, Mhor = NULL, xhor = NULL, Mrot = structure(c(9, 
10, 20, 21, 1, 11, 12, 13, 2, 3, 4, 14, 15, 16, 5, 6, 7, 17, 
18, 19, 8), .Dim = c(3L, 7L)), mcdonalds = FALSE, celtic = FALSE, 
    indep = structure(c(FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, TRUE, FALSE), .Names = c("handle_A1", 
    "handle_A2", "handle_A3", "handle_A4", "handle_A5", "handle_A6", 
    "handle_A7", "handle_A8", "handle_A9", "handle_A10", "handle_A11", 
    "handle_A12", "handle_A13", "handle_A14", "handle_A15", "handle_A16", 
    "handle_A17", "handle_A18", "handle_A19", "handle_A20", "handle_A21", 
    "handle_A22", "handle_A23", "handle_A24", "handle_A25", "handle_A26", 
    "handle_A27", "handle_A28", "handle_A29", "handle_A30", "handle_A31", 
    "handle_A32", "handle_A33", "handle_A34", "handle_A35", "handle_A36", 
    "handle_A37", "handle_A38", "handle_A39", "handle_A40", "handle_A41", 
    "handle_A42", "node1", "node2", "node3", "node4", "node5", 
    "node6", "node7", "node8", "node9", "node10", "node11", "node12", 
    "node13", "node14", "node15", "node16", "node17", "node18", 
    "node19", "node20", "node21", "node22", "node23", "node24", 
    "node25", "node26", "node27", "node28", "node29", "node30", 
    "node31", "node32", "node33", "node34", "node35", "node36", 
    "node37", "node38", "node39", "node40", "node41", "node42"
    ))), .Names = c("Mver", "xver", "Mhor", "xhor", "Mrot", "mcdonalds", 
"celtic", "indep"))), .Names = c("minsymvec", "overunderobj", 
"symobj"), class = "knot")