[R] Langelier-Ludwig Plots

[Boris Steipe]

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?


Cheers,
B.



On Jul 22, 2015, at 11:50 AM, Rich Shepard <rshepard at appl-ecosys.com> wrote:

>  My web search for an R package producing Langelier-Ludwig plots found no
> hits. Has this been implemented in base graphics, lattice, ggplot2, or
> another package?
> 
>  The reference:
> 
> Langelier, W., and Ludwig, H., 1942, Graphical methods for indicating the
> mineral character of natural waters: J. Am. Water Ass., 34, p. 335-352.
> 
> Rich
> 
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