knotR: Knot Diagrams using Bezier Curves

`k8_4a` <-
structure(list(minsymvec = structure(c(-28.6793350292013, -202.623177501971, 
-257.825141907561, -163.066475458281, 42.6573959379139, -179.527906137149, 
-309.087405078165, -183.231258638729, -5.66719959059909, -195.201556903582, 
-230.441642643915, -176.451554310529, -154.354786175119, -11.4736175413334, 
-902.006234589939, -880.391167158588, -815.595573083675, -656.772135073063, 
-115.107188271133, -104.023281462599, -261.261965162703, -387.692197085484, 
-859.254146043629, -623.249489127268, -522.128902711337, -377.068896444211, 
-90.5170721805301, -96.7186616865543, -210.799146365319, -233.611666451985, 
-80.7591249376155, -43.9301728678537, -234.931554886733, -267.432753758088, 
-95.5761380063493, -94.2411774472608, -205.890353688636, -216.441076267721, 
-156.405044359255, -113.833676151612, -911.413661832192, -871.222615385006, 
-747.493212216817, -588.067786528691, -115.107216356998, -144.172850450667, 
-322.058556058172, -448.068223361138, -757.293582368887, -593.016410130926, 
-460.029753271444, -255.243591467299, -23.8025412351414, 44.0952500033704
), .Names = c("handle_A6", "handle_A7", "handle_A8", "handle_A9", 
"handle_A14", "handle_A15", "handle_A16", "handle_A17", "handle_A22", 
"handle_A23", "handle_A24", "handle_A25", "handle_A26", "handle_A27", 
"handle_A33", "handle_A34", "handle_A35", "handle_A36", "handle_A41", 
"handle_A42", "handle_A43", "handle_A44", "handle_A49", "handle_A50", 
"handle_A51", "handle_A52", "handle_A53", "node6", "node7", "node8", 
"node9", "node14", "node15", "node16", "node17", "node22", "node23", 
"node24", "node25", "node26", "node33", "node34", "node35", "node36", 
"node41", "node42", "node43", "node44", "node49", "node50", "node51", 
"node52", "node53", "node54"), class = "minsymvec"), overunderobj = structure(c(13, 
3, 19, 6, 23, 17, 26, 10, 2, 11, 5, 22, 9, 25, 15, 18), .Dim = c(8L, 
2L)), symobj = structure(list(Mver = structure(c(15, 16, 26, 
25, 24, 14, 17, 23, 9, 8, 22, 7, 6, 12, 11, 1, 2, 3, 13, 10, 
4, 18, 19, 5, 20, 21), .Dim = c(13L, 2L)), xver = 27, Mhor = NULL, 
    xhor = NULL, Mrot = NULL, exact_h = NULL, exact_v = NULL, 
    mcdonalds = FALSE, celtic = FALSE, reefknot = FALSE, center_crossing = FALSE, 
    indep = structure(c(FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, 
    TRUE, TRUE, TRUE, FALSE, FALSE, FALSE, FALSE, TRUE, TRUE, 
    TRUE, TRUE, FALSE, FALSE, FALSE, FALSE, TRUE, TRUE, TRUE, 
    TRUE, TRUE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, 
    TRUE, TRUE, TRUE, FALSE, FALSE, FALSE, FALSE, TRUE, TRUE, 
    TRUE, TRUE, FALSE, FALSE, FALSE, FALSE, TRUE, TRUE, TRUE, 
    TRUE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, 
    TRUE, TRUE, TRUE, FALSE, FALSE, FALSE, FALSE, TRUE, TRUE, 
    TRUE, TRUE, FALSE, FALSE, FALSE, FALSE, TRUE, TRUE, TRUE, 
    TRUE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, 
    TRUE, TRUE, TRUE, FALSE, FALSE, FALSE, FALSE, TRUE, TRUE, 
    TRUE, TRUE, FALSE, FALSE, FALSE, FALSE, 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", "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"
    ))), .Names = c("Mver", "xver", "Mhor", "xhor", "Mrot", "exact_h", 
"exact_v", "mcdonalds", "celtic", "reefknot", "center_crossing", 
"indep"))), .Names = c("minsymvec", "overunderobj", "symobj"), class = "knot")