knotR: Knot Diagrams using Bezier Curves

`k7_7a` <-
structure(list(minsymvec = structure(c(-103.710954560763, 95.5351029706981, 
-147.379276424571, -129.522489329624, 54.5416676715505, -158.873321405691, 
-412.64781527928, -428.369200579895, -95.2359739514295, -57.234388022654, 
-107.642965104026, -272.257979970458, -278.537793637088, -246.544306507833, 
-155.358485679758, 27.0060089504738, -345.863759826892, -162.420064710444, 
-562.548141501401, -337.732386754817, -163.914555923084, -167.095710504945, 
-337.05011801048, -435.174850116451, -312.637194025703, -267.139613579256, 
-78.5382749418024, 10.8653366223027, -62.1786268097486, -152.242785976528, 
-63.6507291023932, -271.025382461908, -419.823957763515, -344.010359388975, 
-64.2505252208512, -62.4074970128426, -184.119538370378, -273.359088717589, 
-266.2105590775, -217.90628907793, -146.158588256556, 14.3482465050099, 
-450.288626520749, -275.157540393232, -91.3472784967096, -567.435212079018, 
-492.931818907153, -297.672238715166, -122.031763707209, -227.278104408453, 
-347.435215486885, -416.241086665617, -304.64790097218, -200.262909496148, 
-39.7817359931362, 13.9003916953299), .Names = c("handle_A1", 
"handle_A4", "handle_A5", "handle_A6", "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_A33", "handle_A34", "handle_A47", "handle_A48", "handle_A49", 
"handle_A50", "handle_A51", "handle_A52", "handle_A53", "handle_A54", 
"handle_A55", "handle_A56", "node1", "node5", "node6", "node19", 
"node20", "node21", "node22", "node23", "node24", "node25", "node26", 
"node27", "node28", "node29", "node32", "node33", "node34", "node46", 
"node47", "node48", "node49", "node50", "node51", "node52", "node53", 
"node54", "node55", "node56"), class = "minsymvec"), overunderobj = structure(c(10, 
4, 15, 22, 6, 24, 2, 15, 13, 3, 27, 22, 5, 7), .Dim = c(7L, 2L
)), symobj = structure(list(Mver = structure(c(1, 28, 27, 6, 
21, 20, 19, 26, 25, 24, 5, 22, 23, 7, 8, 9, 2, 15, 16, 17, 10, 
11, 12, 3, 14, 13), .Dim = c(13L, 2L)), xver = c(4, 18), 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, FALSE, FALSE, TRUE, TRUE, TRUE, 
    FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, 
    TRUE, TRUE, TRUE, TRUE, FALSE, FALSE, FALSE, TRUE, TRUE, 
    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, TRUE, 
    TRUE, 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, TRUE, TRUE, 
    TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, 
    FALSE, FALSE, FALSE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, 
    TRUE, TRUE, TRUE, 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", "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"
    ))), .Names = c("Mver", "xver", "Mhor", "xhor", "Mrot", "exact_h", 
"exact_v", "mcdonalds", "celtic", "reefknot", "center_crossing", 
"indep"))), .Names = c("minsymvec", "overunderobj", "symobj"), class = "knot")