Message-ID: <428CF608.2070209@stat.auckland.ac.nz>
Date: 2005-05-19T20:24:40Z
From: Paul Murrell
Subject: Lattice: how to get default ylim?
Hi
Deepayan Sarkar wrote:
> On Thursday 19 May 2005 9:11 am, David James wrote:
>
>>Deepayan Sarkar wrote:
>>
>>>> v <- current.viewport() ## requires R 2.1.0 (I believe)
>>>
>>>No, I think it's been there for a while. However, AFAIR the fact that
>>>viewports have components xscale and yscale that can be accessed like
>>>this is undocumented and may change if the implementation changes (which
>>>is a real possibility).
>>>
>>>Ideally, there should be exported interfaces to access this information,
>>>either in grid or lattice. One of the reasons there isn't is that you
>>>rarely
>>
>>Yes, I agree that such an interface is quite desirable.
>
>
> OK, I'll put something in the next version of lattice.
The expression I recommend for this sort of thing is something like ...
convertY(unit(0:1, "npc"), "native", valueOnly=TRUE)
Paul
--
Dr Paul Murrell
Department of Statistics
The University of Auckland
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