 Maybe I have to white a function for the purpose base on loacator. Thanks
for the reply.


2013/8/3 David Carlson <dcarlson@tamu.edu>

> You cannot move or edit them interactively, but you can save
> the locations of those points by using:
>
> > a <- locator(type="o")
>
> # e.g. click on three locations
>
> > a
> $x
> [1] 0.8559376 1.1778126 1.2340626
>
> $y
> [1] 1.2256976 1.2501162 0.8402324
>
> You could now delete or modify the points and then use lines()
> or points() to add them to a new graph.
>
> > plot(1, 1)
> > lines(a, type="o")
> > points(a, pch=16, col="red")
>
> -------------------------------------
> David L Carlson
> Associate Professor of Anthropology
> Texas A&M University
> College Station, TX 77840-4352
>
> -----Original Message-----
> From: r-help-bounces@r-project.org
> [mailto:r-help-bounces@r-project.org] On Behalf Of Daniel
> Guetta
> Sent: Friday, August 2, 2013 12:23 PM
> To: David Winsemius
> Cc: R-help@r-project.org
> Subject: Re: [R] could I remove or move points in locator()
> based on plot()?
>
> Depending on the complexity of your graphic, you could also
> just re-draw
> the entire thing every time you want to make a change.
>
> Daniel
>
>
> On Fri, Aug 2, 2013 at 10:17 AM, David Winsemius
> <dwinsemius@comcast.net>wrote:
>
> >
> > On Aug 2, 2013, at 2:26 AM, Klot Lee wrote:
> >
> > > Hi,
> > > The function locator() allows me to add points by mouse on
> function
> > plot()
> > > I have draft. But the points can not be edit once I have
> made the click.
> > > How can I remove or just move the points I made on the
> draft?
> >
> > You cannot. The plotting model for base graphics is
> indelible ink. The
> > best you could do would be to plot white on top of black.
> >
> > --
> > David.
> > >
> > > I use the locator function like this:
> > >
> > >> plot(1,1)
> > >> locator(type="o")
> > >
> > >
> > > Thanks.
> > >
> > >       [[alternative HTML version deleted]]
> > >
> > > ______________________________________________
> > > R-help@r-project.org 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.
> >
> > David Winsemius
> > Alameda, CA, USA
> >
> > ______________________________________________
> > R-help@r-project.org 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]]
>
> ______________________________________________
> R-help@r-project.org 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@r-project.org 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.
>



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