Hi, Is there an easy way to add symbols to a line in a scatter plot, so that only a few symbols are added per line (a line drawn based on a large set of data points) , in order to distinguish several lines in one graph (not a symbol for each data point as is the default in plot()).
Thanks a lot! Rgds, Yvonne [[alternative HTML version deleted]] ______________________________________________ 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.