On Wed, 22 Jul 2015, Boris Steipe wrote:
According to ... http://info.ngwa.org/gwol/pdf/721000139.PDF (Graphical Interpretation of Water Quality Data) ... a Langelier-Ludwig plot is simply a scatterplot of cations vs. anions (in percent). Surely that would be beyond trivial to produce in R. Or am I missing a subtle something?
Boris, Yes, that's what it is. I'll see just how trivial it is to produce it in the four-quadrant format I've seen used. It's a different layout from the basic two-variable scatterplot. Thanks for the URL. I worked from a reference in a 2003 paper to the original 1942 paper. Rich ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
