knotR: Knot Diagrams using Bezier Curves

`ornamental20` <-
structure(list(minsymvec = structure(c(107.620140009933, -12.5159683734317, 
8.13344502149481, 106.441651993205, 172.466182048477, 155.479685963874, 
128.860703352669, 59.6797585498126, -32.1196930321353, -152.877974616359, 
-156.915217684169, 46.2927037677875, 133.675419791493, 278.107288531347, 
312.092314590985, 303.394004587969, 178.213877663458, 166.933713984362, 
201.310360208536, 255.261102457548, 225.333947070288, 122.271371206194, 
66.5900536760315, -17.6318443484732, 42.0392769672912, 112.444977610528, 
185.457215803667, 150.75242195567, 105.264241790554, 31.0366609606239, 
-75.8147144417189, -162.657586457712, -140.616606301508, 72.0279289382026, 
185.706258230784, 296.970256318436, 311.31106682584, 250.672384818919, 
176.113753301111, 174.698604783732, 218.961825359782, 252.962803554978, 
187.634840329301, 84.8616766927544), .Names = c("handle_A15", 
"handle_A16", "handle_A17", "handle_A18", "handle_A19", "handle_A20", 
"handle_A21", "handle_A22", "handle_A23", "handle_A24", "handle_A25", 
"handle_A70", "handle_A71", "handle_A72", "handle_A73", "handle_A74", 
"handle_A75", "handle_A76", "handle_A77", "handle_A78", "handle_A79", 
"handle_A80", "node15", "node16", "node17", "node18", "node19", 
"node20", "node21", "node22", "node23", "node24", "node25", "node70", 
"node71", "node72", "node73", "node74", "node75", "node76", "node77", 
"node78", "node79", "node80"), class = "minsymvec"), overunderobj = structure(c(1, 
31, 3, 27, 5, 12, 9, 36, 42, 14, 38, 16, 23, 20, 47, 53, 25, 
34, 45, 49, 50, 2, 33, 4, 37, 6, 35, 11, 13, 44, 15, 48, 17, 
46, 22, 24, 55, 28, 39, 26), .Dim = c(20L, 2L)), symobj = structure(list(
    Mver = NULL, xver = 4, Mhor = NULL, xhor = NULL, Mrot = structure(c(15L, 
    16L, 17L, 18L, 19L, 20L, 21L, 22L, 23L, 24L, 25L, 37L, 38L, 
    39L, 40L, 41L, 42L, 43L, 44L, 45L, 46L, 47L, 4L, 5L, 6L, 
    7L, 8L, 9L, 10L, 11L, 12L, 13L, 14L, 26L, 27L, 28L, 29L, 
    30L, 31L, 32L, 33L, 34L, 35L, 36L, 48L, 49L, 50L, 51L, 52L, 
    53L, 54L, 55L, 1L, 2L, 3L), .Dim = c(11L, 5L)), exact_h = NULL, 
    exact_v = NULL, mcdonalds = FALSE, celtic = FALSE, reefknot = FALSE, 
    center_crossing = FALSE, indep = structure(c(FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, 
    TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, TRUE, TRUE, TRUE, TRUE, TRUE, 
    TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, TRUE, TRUE, TRUE, 
    TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, TRUE, TRUE, TRUE, 
    TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 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", "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", "handle_A73", "handle_A74", 
    "handle_A75", "handle_A76", "handle_A77", "handle_A78", "handle_A79", 
    "handle_A80", "handle_A81", "handle_A82", "handle_A83", "handle_A84", 
    "handle_A85", "handle_A86", "handle_A87", "handle_A88", "handle_A89", 
    "handle_A90", "handle_A91", "handle_A92", "handle_A93", "handle_A94", 
    "handle_A95", "handle_A96", "handle_A97", "handle_A98", "handle_A99", 
    "handle_A100", "handle_A101", "handle_A102", "handle_A103", 
    "handle_A104", "handle_A105", "handle_A106", "handle_A107", 
    "handle_A108", "handle_A109", "handle_A110", "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", "node73", "node74", "node75", 
    "node76", "node77", "node78", "node79", "node80", "node81", 
    "node82", "node83", "node84", "node85", "node86", "node87", 
    "node88", "node89", "node90", "node91", "node92", "node93", 
    "node94", "node95", "node96", "node97", "node98", "node99", 
    "node100", "node101", "node102", "node103", "node104", "node105", 
    "node106", "node107", "node108", "node109", "node110"))), .Names = c("Mver", 
"xver", "Mhor", "xhor", "Mrot", "exact_h", "exact_v", "mcdonalds", 
"celtic", "reefknot", "center_crossing", "indep"))), .Names = c("minsymvec", 
"overunderobj", "symobj"), class = "knot")