My xyplot() with superposed multiple condiions looks better with lines than with points (it's easier to see changes over time with the lines). But, there are gaps in the years (the x axis) for which there are data to be plotted. For example, there are data for years 2004-2006 and 2010-2012, but not for 2007-2009. I would like to have the lines for only the two groups with data.
Reading ?xyplot suggests that the group attribute might do the job but I do not see how to write the equation. Is it possible to plot with lines on discontinuous data or should I use large, solid circles for each year's data points? Rich ______________________________________________ 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.
