[R] How to extract smoothed plot data?

[Uwe Ligges]

On 20.08.2011 12:57, derek wrote:
> Dear R,
>
> I have this script which from my data points creates smoothed plot:
>
> require(graphics)
> require(stats)
> A=read.table("some.txt",header =FALSE,sep = "", dec = ",",fileEncoding = "",
> encoding = "unknown", skip=18,nrows=400)
> attach(A)
> plot(A$V1, A$V2,col="white")
> lines(smooth.spline(A$V1, A$V2,spar=0.4),col="green",lwd=3)

sspline <- smooth.spline(A$V1, A$V2, spar=0.4)
write.table(data.frame(sspline[c("x", "y")]), file = .......)


Uwe Ligges


> I would like to export points coordinates from smoothed plot to file, so
> that I can then use new data for further analysis. In other words to pipe
> defined sequence of x coordinates and corresponding y values to file.
>
>
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