# How to draw a line in plot when I know the start point(x1, y1) and end point(x2, y2)?

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## How to draw a line in plot when I know the start point(x1, y1) and end point(x2, y2)?

 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       Veja quais são os assuntos do momento no Yahoo! +Buscados         [[alternative HTML version deleted]] ______________________________________________ [hidden email] mailing list https://stat.ethz.ch/mailman/listinfo/r-helpPLEASE do read the posting guide http://www.R-project.org/posting-guide.htmland provide commented, minimal, self-contained, reproducible code.
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## Re: How to draw a line in plot when I know the start point(x1, y1) and end point(x2, y2)?

 Dear Lesandro, Take a look at ?segments HTH, Jorge On Thu, Jun 25, 2009 at 2:30 PM, Lesandro <[hidden email]> 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 > > > >      Veja quais são os assuntos do momento no Yahoo! +Buscados > >        [[alternative HTML version deleted]] > > > ______________________________________________ > [hidden email] 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. > >         [[alternative HTML version deleted]] ______________________________________________ [hidden email] mailing list https://stat.ethz.ch/mailman/listinfo/r-helpPLEASE do read the posting guide http://www.R-project.org/posting-guide.htmland provide commented, minimal, self-contained, reproducible code.
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## Re: How to draw a line in plot when I know the start point(x1, y1) and end point(x2, y2)?

 In reply to this post by Lesandro 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 ______________________________________________ [hidden email] mailing list https://stat.ethz.ch/mailman/listinfo/r-helpPLEASE do read the posting guide http://www.R-project.org/posting-guide.htmland provide commented, minimal, self-contained, reproducible code.