Re: [R] bwplot with Date object

2008-07-31 Thread Deepayan Sarkar
On Thu, Jul 31, 2008 at 12:54 PM, GOUACHE David <[EMAIL PROTECTED]> wrote: > Hello R-helpers, > > I would like to produce a boxplot for dates, using lattice. > > Here is a dummy example : > > dates<-as.Date(32768:32895,origin="1900-01-01") > plouf<-data.frame(days=dates,group=factor(rep(1:2,times=1

[R] bwplot with Date object

2008-07-31 Thread GOUACHE David
Hello R-helpers, I would like to produce a boxplot for dates, using lattice. Here is a dummy example : dates<-as.Date(32768:32895,origin="1900-01-01") plouf<-data.frame(days=dates,group=factor(rep(1:2,times=128/2))) bwplot(group~days,data=plouf) # doesn't work, whereas : bwplot(group~as.num