knotR: Knot Diagrams using Bezier Curves

`celtic3` <-
structure(list(minsymvec = structure(c(-11.6885821458558, -126.537325464593, 
-275.738221090271, -212.984027692579, -79.2201886617963, -132.347419813542, 
-80.3198837724834, -46.4984761541089, -39.3548352490109, 265.032064540301, 
160.235418960561, 195.43513027173, 295.243803168167, 193.017270439337, 
49.6347826608518, 35.1176962950346, 14.1061400943301, 314.441539735319, 
-40.7610885680426, -185.134942038992, -267.008565327187, -163.340587877844, 
-43.3621986204496, -190.544255154888, -282.28165416765, -45.7195710000308, 
-59.8162527737307, 239.13189138114, 156.322139354294, 233.796027149045, 
272.992755022653, 148.738906117984, 60.9180645059307, 52.4847747415555, 
369.076310895653, 463.395856012853), .Names = c("handle_A2", 
"handle_A3", "handle_A4", "handle_A5", "handle_A6", "handle_A26", 
"handle_A29", "handle_A35", "handle_A36", "handle_A38", "handle_A39", 
"handle_A40", "handle_A41", "handle_A42", "handle_A62", "handle_A63", 
"handle_A65", "handle_A71", "node2", "node3", "node4", "node5", 
"node6", "node26", "node27", "node29", "node35", "node38", "node39", 
"node40", "node41", "node42", "node62", "node65", "node71", "node72"
), class = "minsymvec"), overunderobj = structure(c(2, 6, 30, 
8, 12, 16, 20, 24, 26, 34, 35, 3, 7, 11, 25, 13, 17, 21, 29, 
31), .Dim = c(10L, 2L)), symobj = structure(list(Mver = structure(c(35, 
5, 4, 3, 2, 6, 29, 26, 27, 28, 25, 15, 14, 13, 12, 16, 19, 1, 
31, 32, 33, 34, 30, 7, 10, 9, 8, 11, 21, 22, 23, 24, 20, 17), .Dim = c(17L, 
2L)), xver = c(18, 36), Mhor = structure(c(36, 26, 4, 5, 3, 35, 
2, 6, 29, 1, 34, 30, 7, 31, 33, 32, 10, 18, 28, 14, 13, 15, 19, 
16, 12, 25, 17, 20, 24, 11, 23, 21, 22, 8), .Dim = c(17L, 2L)), 
    xhor = c(9, 27), Mrot = NULL, exact_h = NULL, exact_v = NULL, 
    mcdonalds = FALSE, celtic = TRUE, reefknot = FALSE, center_crossing = FALSE, 
    indep = structure(c(FALSE, TRUE, TRUE, TRUE, TRUE, TRUE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, TRUE, FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, TRUE, TRUE, FALSE, TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    TRUE, TRUE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    TRUE, FALSE, FALSE, TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    TRUE, TRUE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    TRUE, FALSE, FALSE, TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    TRUE, FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    TRUE, TRUE), .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", "handle_A43", 
    "handle_A44", "handle_A45", "handle_A46", "handle_A47", "handle_A48", 
    "handle_A49", "handle_A50", "handle_A51", "handle_A52", "handle_A53", 
    "handle_A54", "handle_A55", "handle_A56", "handle_A57", "handle_A58", 
    "handle_A59", "handle_A60", "handle_A61", "handle_A62", "handle_A63", 
    "handle_A64", "handle_A65", "handle_A66", "handle_A67", "handle_A68", 
    "handle_A69", "handle_A70", "handle_A71", "handle_A72", "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", "node43", "node44", 
    "node45", "node46", "node47", "node48", "node49", "node50", 
    "node51", "node52", "node53", "node54", "node55", "node56", 
    "node57", "node58", "node59", "node60", "node61", "node62", 
    "node63", "node64", "node65", "node66", "node67", "node68", 
    "node69", "node70", "node71", "node72"))), .Names = c("Mver", 
"xver", "Mhor", "xhor", "Mrot", "exact_h", "exact_v", "mcdonalds", 
"celtic", "reefknot", "center_crossing", "indep"))), .Names = c("minsymvec", 
"overunderobj", "symobj"), class = "knot")