Re: [R] plot portion of a line

From: Gabor Grothendieck <ggrothendieck_at_gmail.com>
Date: Tue 16 Jan 2007 - 16:36:06 GMT

Use segments. In the following we overlay the black abline with a wider red segments line segment:

set.seed(1)
x <- rnorm(50)
y <- rnorm(50)

plot(y ~ x)

y.lm <- lm(y ~ x)

abline(y.lm) # omit this line if black abline not wanted

x0 <- c(-2, 4)
y0 <- predict(y.lm, list(x = x0))
segments(x0[1], y0[1], x0[2], y0[2], col = "red", lwd = 2)

On 1/16/07, BBands <bbands@gmail.com> wrote:
> Dear HelpeRs,
>
> Given:
> x <- rnorm(50)
> y <- rnorm(50)
> plot(x,y)
> abline(lm(x ~ y))
>
> Is there a way to plot just a portion of the line? Say for values of x
> > 2.0 or x > -2.0 and x < 4.0. (Still fitting all the points.)
>
> Thank you,
>
> jab
> --
> John Bollinger, CFA, CMT
> www.BollingerBands.com
>
> If you advance far enough, you arrive at the beginning.
>
> ______________________________________________
> R-help@stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>



R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Wed Jan 17 03:40:19 2007

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