[R] Langelier-Ludwig Plots

[Jim Lemon]

Hi Rich,
Thanks to the link provided by Boris, I now realize that the third
example in the radial.plot function help page is almost a Tickell
diagram. Another plotting function that is close to the illustrations
in that paper is starPie. Learn something every day. Hope this is
helpful.

Jim


On Thu, Jul 23, 2015 at 2:49 AM, Rich Shepard <rshepard at appl-ecosys.com> wrote:
> 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
>
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