On Feb 12, 2008 9:12 AM, ONKELINX, Thierry <[EMAIL PROTECTED]> wrote: > Just to inform the list that the problem is solved: > > This problem was due to DF$Hora being a factor. Converting it to numeric > or time solved the problem.
This is because geoms are automatically broken into groups based on the combination of all categorical variables used in the plot - which obviously causes problems in this case. The correct solution is to override the default grouping with group = 1. I do need to document this better somewhere. Hadley -- http://had.co.nz/ ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.