[R] calling map() in xyplot()

[David Winsemius]

On Mar 9, 2010, at 10:42 PM, Gurmeet wrote:

> Hi All,
>
> I'm trying to add a map on the following lattice plot, but not  
> correctly...
> can anyone help please...
>
> R Code:
>
> require(lattice)
> us.map <- map(plot = FALSE, fill = TRUE)

Maybe you should explain why you think plotting quake locations near  
Fiji might show up on a map of the united States?

> Depth <- equal.count(quakes$depth, number=8, overlap=.1)
> xyplot(lat ~ long | Depth, data = quakes,
>  panel = function(...) {
>    panel.polygon(us.map$x,us.map$y)
>    panel.xyplot(...)
>  }
> )
>
> Any help would be greatly appreciated,
> Gurmeet
>
> 	[[alternative HTML version deleted]]
>
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David Winsemius, MD
West Hartford, CT