Thanks Jorge and Marc,
I drew the line using the function:
segments(x0, y0, x1, y1)
Lesandro
________________________________________________________________________
--- Em qui, 25/6/09, Marc Schwartz <marc_schwa...@me.com> escreveu:
De: Marc Schwartz <marc_schwa...@me.com>
Assunto: Re: [R] How to draw a line in plot when I know the start point(x1, y1)
and end point(x2, y2)?
Cc: r-help@r-project.org
Data: Quinta-feira, 25 de Junho de 2009, 15:38
On Jun 25, 2009, at 1:30 PM, Lesandro wrote:
> Hello all,
>
> How to
draw a line in plot when I know the start point(x1,y1) and end point(x2,y2)? I
need make this as additional information in the graph:
>
> plot(wl2[[1]],wl2[[2]])
>
> I think that is possible make this with the function abline(), is possible? I
> looked the function lines() too, but don't understand as make.
>
>
> Thanks!
> Lesandro
See ?segments which does just what you are looking for.
lines() is more designed for a series of connected lines (eg. a polygon) rather
than a single line segment.
abline() can draw a straight line, at a given vertical or horizontal position,
or if given a linear model object, the fitted line.
HTH,
Marc Schwartz
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