Re: [R] Ternary plots

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From: Peter Denisevich (pdenis2@home.com)
Date: Tue 20 Mar 2001 - 06:43:16 EST


Message-ID: <3AB66F64.44A55901@home.com>

David Lucy wrote:

> Hi everyone,
>
> Sorry about last message, the send key slipped.
>
> Does anybody know about ternary (tertiary?) plotting functions for R -
> they're triangular things used much beloved by chemists for plotting
> compositional data.
>
> Regards,
>
> David.
>
> **********************************************************
> ** Dr. David Lucy **
> ** Centre for Forensic Statistics and Legal Reasoning **
> ** Department of Mathematics and Statistics **
> ** The University of Edinburgh **
> ** James Clerk Maxwell Building **
> ** King's Buildings **
> ** Mayfield Road **
> ** Edinburgh **
> ** EH9 3JZ **
> ** **
> ** tel: 0131 650 5057 **
> ** e-mail: dlucy@maths.ed.ac.uk **
> **********************************************************
>
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There is an example of a ternary plot in the dataset 'Skye' in the package 'MASS':

>require(MASS)
>example(Skye)
...
I'm a chemist and I HATE ternary diagrams. I'm hoping to use R to show the people
I work with that there are better ways, at least for the types of correlations
we're dealing with.

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