[R] Lattice: how to get default ylim?

[Paul Murrell]

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
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Dr Paul Murrell
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