Graphics Device; locator function

I believe I remember "locator" finishes with a right click;
And, it is out of topic, but "net""books" may 
have a very small screen : before drawing, I 
usually configure my screen with 
"X11(height=10)" which explicitly opens the 
graphical device and gives a screen which is fully seeable.
Somewhere on one of the R lists, someone 
suggested (sorry not to be more specific)

setHook(packageEvent("grDevices", "onLoad"),
    function(...) grDevices::X11.options(width = 4, height = 4, pointsize = 8)
)

in your .Rprofile for use on the Asus EEE
I imagine with judicious choices of width and 
height it would work as well on other systems. It certainly works for me
--- En date de : Sam 3.10.09, Dirk Eddelbuettel <edd at debian.org> a ?crit :

De: Dirk Eddelbuettel <edd at debian.org>
Objet: Re: [R-sig-Debian] Graphics Device; locator function
?: "Judson" <judson0423 at gmail.com>
Cc: r-sig-debian at r-project.org
Date: Samedi 3 Octobre 2009, 21h24

On 3 October 2009 at 15:04, Judson wrote:
| Hi, haven't been here for a while, but everyone one was
always so
| helpful I thought I would ask you another really basic
question.
|
| I'm running R2.9.1 in Ubuntu8.04 on a netbook (maxed out
on memory etc
| so I don't think that's a problem - wth it's a Dell Mini
9" with that
| lpia non-architecture you told me about).
|
| Anyway, some of the graphics functions/parameters are
causing
| unresolved computation.  Wasn't sure what to do but
I've noticed that
| closing the graphics device causes the R routine to stop
at least.
|
| The most recent example is the locator function (but may
have caused
| the same thing a day or two ago with abline
|
| I did a help lookup on "locator" and the response tells
me that
| "locator is supported only on devices such as 'X11',
'windows', and
| 'quartz'".

X11 is what is what you probably have.  See

    options("device")

and

    help(options)

which shows

-----------------------------------------------------------------------------
Options set in package grDevices:

     These will be set when package
'grDevices' (or its name space) is
     loaded if not already set.

     'device': a character string
giving the name of a function, or the
          function object itself,
which when called creates a new
          graphics device of the
default type for that session.  The
          value of this option
defaults to the normal screen device
          (e.g., 'X11', 'windows'
or 'quartz') for an interactive
          session, and 'pdf' in
batch use or if a screen is not
          available.  If set
to the name of a device, the device is
          looked for first from
the global environment (that is down
          the usual search path)
and then in the 'grDevices' namespace.

          The default values in
interactive and non-interactive
          sessions are
configurable via environment variables
          'R_INTERACTIVE_DEVICE'
and 'R_DEFAULT_DEVICE' respectively.

-----------------------------------------------------------------------------
| My device is "R Graphics: Device 2" which gives me no way
to "right
| click", etc. for Properties.

Device 2 simply is a count of your devices.

locator() is a little tricky to use, and I suspect you
simply didn't
"finish". I haven't used it in a while but AFAICR you need
to click on the
mouse in a particular sequence.

Dirk

--
Three out of two people have difficulties with fractions.

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Michael Dewey
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Graphics Device; locator function

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