1 | ellipse(x, y, a, b)
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | ##---- Should be DIRECTLY executable !! ----
##-- ==> Define data, use random,
##-- or do help(data=index) for the standard data sets.
## The function is currently defined as
function (x, y, a, b)
{
nseg = 360
x.cent <- x
y.cent <- y
xx <- x.cent + a * cos(seq(0, 2 * pi, length.out = nseg))
yy <- y.cent + b * sin(seq(0, 2 * pi, length.out = nseg))
lines(xx, yy, col = "red")
return(cbind(xx, yy))
}
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