[R] tick.number for date in xyplot

[Benjamin Tyner]

Thanks; this will have to do until a data-independent solution is
implemented. I tried things like

 seq(min(x),max(x),by='1 month')

but I always forget how to make 'x' visible inside a call to xyplot. 

Ben

On Fri, 2006-08-25 at 17:02 -0400, jim holtman wrote:
> Try this:
> 
> 
> xyplot(runif(365)~I(as.Date("1999-01-01") + 1:365),
>       scales=list(x=list(at=seq(as.Date('1999-1-1'), length=12, by='1
> month'), labels=NULL)))
> 
> 
> 
> On 8/25/06, Benjamin Tyner <btyner at stat.purdue.edu> wrote:
> > I would like a tick mark for each month; for example,
> >
> > xyplot(runif(365)~I(as.Date("1999-01-01") + 1:365),
> >       scales=list(x=list(format="%b %Y",tick.number=12)))
> >
> > I know I could make x numeric and use 'at' and 'labels', but I was
> > wondering if there is a more direct route I'm missing. (In particular,
> > one that doesn't have to be modified for new data).
> >
> > Thanks,
> > Ben
> >
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> 
>