## This shows how to impose reflectional symmetry on
## k9_1, the nine-sided starry knot.
library(knotR)
filename <- "9_1.svg"
a <- reader(filename)
Mver <- matrix(c(
53,01,
26,28
),ncol=2,byrow=TRUE)
Mrot <-
`[<-`(sweep(matrix(seq(from=1,by=30,len=54),byrow=TRUE,ncol=9),1,c(52:54,25:27),"+")%%54,2,1,54)
sym91 <-
symmetry_object(
x = a,
Mver = Mver,
xver = c(27,54),
Mrot = Mrot,
)
as <- symmetrize(a,sym91)
ou91 <-
matrix(c(
02,29,
32,05,
08,35,
38,11,
14,41,
44,17,
20,47,
50,23,
26,53
),byrow=TRUE,ncol=2)
jj <- knotoptim(filename,
symobj = sym91,
ou = ou91,
prob=0,
iterlim=1000,print.level=2
)
write_svg(jj,filename,safe=FALSE)
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