From spencer.graves at pdf.com  Thu Nov 18 01:47:13 2004
From: spencer.graves at pdf.com (Spencer Graves)
Date: Thu Nov 18 01:47:24 2004
Subject: [Rd] Re: [R] Changing graphics defaults [was: changing (core)
 function argument defaults?]
In-Reply-To: <BAY22-F8BBB2BB7E3C5D182A17A0A7C20@phx.gbl>
References: <BAY22-F8BBB2BB7E3C5D182A17A0A7C20@phx.gbl>
Message-ID: <419BF111.10507@pdf.com>

      Under the S3 standard, you could make a local copy of any function 
and change the defaults in that local copy.  That may not always work 
under the S4 standard methods dispatch going to code hidden in 
namespaces.  In any event, it should be easy (and safer) to write a 
function with a slightly different name, e.g., adding a dot "." to the 
end of the name, that would have different defaults and would do nothing 
but call the function of interest.  This might be safer

      I don't have any suggestions about changing graphics defaults 
other than to ask for that specifically -- e.g., by changing the subject 
line to this email. 

      hope this helps.  spencer graves

RenE J.V. Bertin wrote:

> &gt;From: Patrick Connolly &lt;p.connolly@hortresearch.co.nz&gt;
> &gt;To: &quot;RenE J.V. Bertin&quot; &lt;rjvbertin@hotmail.com&gt;
> &gt;Subject: Re: [R] changing (core) function argument defaults?
> &gt;Date: Thu, 18 Nov 2004 11:43:10 +1300
>
> &gt;
> &gt;On Wed, 20-Oct-2004 at 07:48PM +0200, RenE J.V. Bertin wrote:
> &gt;
> &gt;|&gt; Hello,
> &gt;|&gt;
> &gt;
> &gt;|&gt; Is it possible to change the defaults for the arguments to a
> &gt;|&gt; function, without changing the function code itself?  I'm 
> asking
> &gt;|&gt; because I'd like to override the default dimensions and font 
> family
> &gt;|&gt; for a graphics device. Before 2.0.0, I'd just do that with a 
> small
> &gt;|&gt; edit in the appropriate .R file containing the device function
> &gt;|&gt; definition. I appears to be possible no longer. So rather than
> &gt;|&gt; copying the definition into my own .Rprofile, it would be 
> nice if
> &gt;|&gt; just the defaults could be modified...
> &gt;
> &gt;I didn't notice a response to this question.  I'd like to do 
> something
> &gt;similar and haven't been able to work out how to do it.
> &gt;
> &gt;
> &gt;best
> &gt;
> &gt;--
> &gt;Patrick Connolly
> &gt;HortResearch
> &gt;Mt Albert
> &gt;Auckland
> &gt;New Zealand
> &gt;Ph: +64-9 815 4200 x 7188
>
> No, I haven't noticed a reply to this question neither.
>
> Best,
> Ren? Bertin
>
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-- 
Spencer Graves, PhD, Senior Development Engineer
O:  (408)938-4420;  mobile:  (408)655-4567


[Rd] Re: [R] Changing graphics defaults [was: changing (core) function argument defaults?]
Spencer Graves