Mikkel -
Suppose you want tick marks at every half hour:
ticks = seq(as.POSIXct('2010-02-22 12:00:00 PST'),
as.POSIXct('2010-02-22 17:00:00 PST'),by='30 min')
dotplot(Name ~ Time, data = C, horizontal = TRUE,scales=list(x=list(at=ticks)))
Hope this helps.
- Phil Spector
Statistical Computing Facility
Department of Statistics
UC Berkeley
spec...@stat.berkeley.edu
On Mon, 22 Feb 2010, Mikkel Grum wrote:
Hi,
I'm drawing lattice dotplots with time along the x-axis as in:
C <-data.frame(c("A", "B"),Sys.time()+ rnorm(50)*3600)
names(C) <- c("Name", "Time")
dotplot(Name ~ Time, data = C, horizontal = TRUE)
On my display, the x-axis shows tick marks every two hours. I would like to
show something more frequent; at least every hour, possibly more often. I've
tried many variants of my understanding of the syntax in the help file, but I'm
not making progress.
Any suggestions?
All suggestions greatly appreciated.
Mikkel
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