[R] Interactively editing point labels in a graph

[Felix Andrews]

The built-in R graphics system was not designed for interactivity --
there is no [feasible] way to detect the data point coordinates in a
base graphics plot. The playwith package tries to figure out the
coordinates from the data objects given in the call: this works for
simple scatterplots etc, but is non-trivial for your CA plot. You
*could* define functions to enable playwith to work correctly in this
case: the functions would be called something like
"plotCoords.plot.ca" and possibly "case.names.ca" (if
case.names.default does not already work).

Regards
-Felix

On 6 February 2010 23:11, trece por ciento <el13porciento at yahoo.com> wrote:
> Many thanks, Felix
> It worked, simply importing the emf into PowerPoint!
> By the way, as you are the maintainer of playwith, a question: Why is playwith unable to cope with it?
> I liked very much the playwith option because it is easy to use, and has all the basic capabilities that I need.
> Best regards,
> Hug
>
> --- On Wed, 2/3/10, Felix Andrews <felix at nfrac.org> wrote:
>
>> From: Felix Andrews <felix at nfrac.org>
>> Subject: Re: [R] Interactively editing point labels in a graph
>> To: "trece por ciento" <el13porciento at yahoo.com>
>> Cc: "Liviu Andronic" <landronimirc at gmail.com>, r-help at r-project.org
>> Date: Wednesday, February 3, 2010, 4:51 PM
>> For your situation, perhaps the best
>> option is to save the plot in a
>> vector format like WMF, PDF or SVG, and open it with an
>> external
>> editor. Inkscape is a good one.
>>
>>
>> On 4 February 2010 06:46, trece por ciento <el13porciento at yahoo.com>
>> wrote:
>> > Thanks, Liviu
>> > In a first look it seems OK. Two questions:
>> > 1. Playwith accept directly the plots created by the
>> ca package, but it seems unable to identify the point
>> labels
>> > For example:
>> > data(smoke)
>> > smoke
>> > ca(smoke)
>> > plot(ca(smoke))
>> > playwith(plot(ca(smoke)))
>> > Then, if I try to identify a label playwith gives the
>> message "Sorry, can not guess the data point coordinates.
>> Please contact the maintainer with suggestions".
>> > If I ask to select the label from a table playwith
>> sends the following message to RGui: "Error in
>> data.frame(..., check.names = FALSE) :
>> > arguments imply differing number of rows: 2, 0"
>> > 2. Can playwith draw ellipses or any other figure
>> around selected points?
>> >
>> > (For the first question it seems my fault, but I don't
>> know how to fix it)
>> >
>> > Hug
>> >
>> > --- On Wed, 2/3/10, Liviu Andronic <landronimirc at gmail.com>
>> wrote:
>> >
>> >> From: Liviu Andronic <landronimirc at gmail.com>
>> >> Subject: Re: [R] Interactively editing point
>> labels in a graph
>> >> To: "trece por ciento" <el13porciento at yahoo.com>
>> >> Cc: r-help at r-project.org
>> >> Date: Wednesday, February 3, 2010, 3:49 AM
>> >> Hello
>> >>
>> >> On 2/3/10, trece por ciento <el13porciento at yahoo.com>
>> >> wrote:
>> >> > Dear experts,
>> >> >  I would like to be able to interactively
>> (if
>> >> possible, with mouse and clik) edit point labels
>> in graphs,
>> >> >
>> >> Try playwith.
>> >> Liviu
>> >>
>> >> > particularly in multivariate graphs, such as
>> the
>> >> biplots you get after a correspondence analysis
>> (with, for
>> >> example, package ca), where labels tend to
>> overlap. The
>> >> graph aspect ratio is relevant (it needs to be
>> mantained).
>> >> And I'm working with Windows XP.
>> >> >  In this kind of graphs points in the graph
>> are
>> >> identified with labels, generally long (see, for
>> example: http://www.white-history.com/Greece_files/hlafreq.jpg),
>> >> and sometimes -as in the example- it is good to
>> group
>> >> certain points within ellipses.
>> >> >  Do you know if exists some package able to
>> do
>> >> this task?
>> >> >  Thanks in advance,
>> >> >  Hug
>> >> >
>> >> >
>> ______________________________________________
>> >> >  R-help at 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.
>> >> >
>> >>
>> >>
>> >> --
>> >> Do you know how to read?
>> >> http://www.alienetworks.com/srtest.cfm
>> >> http://goodies.xfce.org/projects/applications/xfce4-dict#speed-reader
>> >> Do you know how to write?
>> >> http://garbl.home.comcast.net/~garbl/stylemanual/e.htm#e-mail
>> >>
>> >
>> >
>> >
>> >
>> > ______________________________________________
>> > R-help at 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.
>> >
>>
>>
>>
>> --
>> Felix Andrews / 安福立
>> Postdoctoral Fellow
>> Integrated Catchment Assessment and Management (iCAM)
>> Centre
>> Fenner School of Environment and Society [Bldg 48a]
>> The Australian National University
>> Canberra ACT 0200 Australia
>> M: +61 410 400 963
>> T: + 61 2 6125 4670
>> E: felix.andrews at anu.edu.au
>> CRICOS Provider No. 00120C
>> --
>> http://www.neurofractal.org/felix/
>>
>
>
>
>



-- 
Felix Andrews / 安福立
Postdoctoral Fellow
Integrated Catchment Assessment and Management (iCAM) Centre
Fenner School of Environment and Society [Bldg 48a]
The Australian National University
Canberra ACT 0200 Australia
M: +61 410 400 963
T: + 61 2 6125 4670
E: felix.andrews at anu.edu.au
CRICOS Provider No. 00120C
-- 
http://www.neurofractal.org/felix/