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2009 Nov 06
3
order of points in spline
...f
the points themselves, but orders them by x.
For instance, I have:
x <- c(262, 275, 264, 250, 247, 242, 238, 233)
y <- c(422, 389, 359, 308, 269, 229, 191, 176)
plot(x, y, xlim=c(0, 500), ylim=c(0,500))
s <- spline(x,y)
points(s, type="l", lwd=2)
As you can see from the above examplethe spline is fitted not using the
points in the order that was passed, but ordering them by x.
Is there a way to prevent this?
I also tried loess and other packages that fit curves to points but didn't
have any luck either
thanks
nico
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