Fran,
The trick is to use box.width, not box.ratio.
xyplot(Perc ~ as.POSIXct(hora,format="%d-%m-%Y %H:%M"),
data=digrate, groups=Drate, ## key=leg,
xlab="time of the day",
horizontal=FALSE,
scales=list(alternating=FALSE,
tck=c(1,0),
x=list(at=seq(r[1],r[2],by="hour"),
labels=format(seq(r[1],r[2],"hours"), format="%H"))),
panel=function(...) {
panel.fill(col="white")
panel.grid(-1,0,lty=3,col="gray")
panel.barchart(...)
},
main="xyplot", box.width=5000
)
I also changed the color of the grid to gray. I don't want the background grid
visually dominant.
Rich
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