knotR: Knot Diagrams using Bezier Curves

`k8_19a` <-
structure(list(minsymvec = structure(c(74.4696303106248, -105.886268147453, 
-404.872407151527, -404.364846874265, -161.730223392039, -84.8226844555999, 
-28.319175220651, -307.946171344232, -323.958500235223, -128.225304988675, 
-39.3728634518444, -223.435605126823, -235.286980713512, -491.72629385975, 
-408.588286211562, -232.922453379171, 162.46466471742, 58.9698367114018, 
-254.975797572516, 90.0566884995565, -206.40556735351, -435.560385078022, 
-311.622517511582, -123.529053518782, -45.7551706303886, -129.274836732289, 
-331.589576816631, -269.97602942392, -38.1978305736246, -245.780893512212, 
-212.130485413623, -320.577010413597, -489.970411384817, -334.802579926255, 
-164.989711232417, 154.015420689105, -46.8432573282464, -330.140155115155, 
-480.577988104238, 11.2965430158591), .Names = c("handle_A1", 
"handle_A2", "handle_A3", "handle_A4", "handle_A5", "handle_A6", 
"handle_A8", "handle_A9", "handle_A10", "handle_A11", "handle_A15", 
"handle_A22", "handle_A23", "handle_A24", "handle_A25", "handle_A26", 
"handle_A28", "handle_A29", "handle_A30", "handle_A35", "node2", 
"node3", "node4", "node5", "node6", "node8", "node9", "node10", 
"node15", "node21", "node22", "node23", "node24", "node25", "node26", 
"node28", "node29", "node30", "node31", "node35"), class = "minsymvec"), 
    overunderobj = structure(c(1, 2, 10, 5, 7, 15, 18, 13, 17, 
    6, 3, 11, 16, 8, 12, 20), .Dim = c(8L, 2L)), symobj = structure(list(
        Mver = structure(c(8, 9, 15, 3, 2, 10, 6, 5, 4, 14, 13, 
        7, 19, 20, 12, 16, 17, 18), .Dim = c(9L, 2L)), xver = c(1, 
        11), Mhor = NULL, xhor = NULL, Mrot = NULL, exact_h = NULL, 
        exact_v = NULL, mcdonalds = FALSE, celtic = FALSE, reefknot = FALSE, 
        center_crossing = FALSE, indep = structure(c(TRUE, TRUE, 
        TRUE, TRUE, TRUE, TRUE, FALSE, TRUE, TRUE, TRUE, TRUE, 
        FALSE, FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, 
        FALSE, FALSE, TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, TRUE, 
        TRUE, TRUE, FALSE, FALSE, FALSE, FALSE, TRUE, FALSE, 
        FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, TRUE, TRUE, 
        TRUE, TRUE, FALSE, TRUE, TRUE, TRUE, FALSE, FALSE, FALSE, 
        FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, 
        TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, TRUE, TRUE, TRUE, 
        TRUE, FALSE, FALSE, FALSE, TRUE, 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", 
        "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"))), .Names = c("Mver", 
    "xver", "Mhor", "xhor", "Mrot", "exact_h", "exact_v", "mcdonalds", 
    "celtic", "reefknot", "center_crossing", "indep"))), .Names = c("minsymvec", 
"overunderobj", "symobj"), class = "knot")