knotR: Knot Diagrams using Bezier Curves

`k7_2` <-
structure(list(minsymvec = structure(c(-0.0470756254998946, -272.963022509178, 
-368.579965351597, -217.07322032381, -29.8882421899812, -273.810874323077, 
-215.302475507085, -268.604074312024, -202.988244385163, -134.879928838895, 
-49.3804171622436, 347.326209019884, 213.596156999089, 3.0669875797611, 
-99.502552208477, -489.466830906549, -378.419775753469, -89.5717682545522, 
206.209534330255, 391.469384828891, 432.528636225722, -249.423991758348, 
-114.897842791461, -324.923482876785, -318.4080712384, -113.270824973501, 
-117.847973457776, -275.110813304986, -219.478723307698, -261.869156752163, 
-193.525369771723, -67.860659163282, -45.6774728481281, 270.106146500224, 
150.027807075524, -50.6277498330516, -146.21813536487, -476.716692777773, 
-253.230049629174, 49.3287676912967, 282.463171937133, 397.288743221942, 
409.445467729263, -333.740551590321), .Names = c("handle_A3", 
"handle_A4", "handle_A5", "handle_A6", "handle_A8", "handle_A9", 
"handle_A10", "handle_A11", "handle_A12", "handle_A13", "handle_A18", 
"handle_A25", "handle_A26", "handle_A27", "handle_A28", "handle_A30", 
"handle_A31", "handle_A32", "handle_A33", "handle_A34", "handle_A35", 
"handle_A40", "node3", "node4", "node5", "node6", "node8", "node9", 
"node10", "node11", "node12", "node13", "node18", "node25", "node26", 
"node27", "node28", "node30", "node31", "node32", "node33", "node34", 
"node35", "node40"), class = "minsymvec"), overunderobj = structure(c(15, 
21, 18, 8, 3, 11, 6, 22, 17, 7, 19, 14, 4, 10), .Dim = c(7L, 
2L)), symobj = structure(list(Mver = structure(c(13, 12, 11, 
3, 4, 5, 10, 6, 9, 18, 8, 2, 1, 22, 14, 15, 16, 21, 17, 20, 7, 
19), .Dim = c(11L, 2L)), xver = NULL, Mhor = NULL, xhor = NULL, 
    Mrot = NULL, exact_h = NULL, exact_v = NULL, mcdonalds = TRUE, 
    celtic = FALSE, reefknot = FALSE, center_crossing = FALSE, 
    indep = structure(c(FALSE, FALSE, TRUE, TRUE, TRUE, TRUE, 
    FALSE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, FALSE, 
    FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    TRUE, TRUE, TRUE, TRUE, FALSE, TRUE, TRUE, TRUE, TRUE, TRUE, 
    TRUE, FALSE, FALSE, FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, TRUE, TRUE, TRUE, TRUE, FALSE, TRUE, 
    TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, FALSE, FALSE, FALSE, 
    TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, TRUE, 
    TRUE, TRUE, FALSE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, 
    FALSE, FALSE, FALSE, TRUE, 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", "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"))), .Names = c("Mver", 
"xver", "Mhor", "xhor", "Mrot", "exact_h", "exact_v", "mcdonalds", 
"celtic", "reefknot", "center_crossing", "indep"))), .Names = c("minsymvec", 
"overunderobj", "symobj"), class = "knot")