[R] xyplot formula

[Phil Spector]

Geoff -
    I think this will get you closer to a solution:

newdf = reshape(df,varying=names(df)[-c(1,2)],direction='long',
                 times=2000:2003,idvar=c('country','food'),v.names='X',
                 timevar='year')

xyplot(X~year|country*food,data=newdf)
 					- Phil Spector
 					 Statistical Computing Facility
 					 Department of Statistics
 					 UC Berkeley
 					 spector at stat.berkeley.edu



On Fri, 18 Feb 2011, Geoff Russell wrote:

> df=data.frame(country=c("A","A","A","B","B","B"),
>    food=rep(c("Apples","Pears","Bananas"),2),
>    X2000=c(4,5,6,7,6,8),
>    X2001=c(4,5,6,7,6,8),
>    X2002=c(4,5,6,7,6,8),
>    X2003=c(4,5,6,7,6,8));
>
> I have data in the above form trying to get a plot of each fruit over time
> year conditioned on country and food.
>
> I tried,
>
> xyplot(X2000+X2001+X2002+X2003~2000:2003|country*food,df)
>
> But think I need to transform the data, just not sure
> how.  Any help gratefully received.
>
> Cheers,
> Geoff.
>
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