Hi Jessica,

I've not used these myself for isotope ratios but these bit of free
software may help you:

http://www.crog.org/dplot/  (only works under Mac OS X 10.2 or better)
http://www.lboro.ac.uk/research/phys-geog/tri-plot/index.html (excel
workbook)

George

Jessica North wrote:

>Hello All,
>
>I would like to plot 3 isotope ratios (dD, d18O, and d13C) on a single
>graph and examine correlations. Would anyone have suggestions for
>setting up such a graph (maybe triangular?) and analysis? Has anyone had
>success doing this with a particular software? Or is there a better way
>to present the data and examine relationships?
>
>Many thanks,
>
>Jessica
>
>Jessica C. North
>Resource Consultant - PhD Candidate
>
>Department of Chemistry
>University of Otago
>PO Box 56, Dunedin
>New Zealand
>Tel 64 3 479 7915 (please note new office number)
>Mob 021 044 0382
>Fax 64 3 479 7906
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--
George Swann
Environmental Change Research Centre (ECRC)
Department of Geography
University College London
26 Bedford Way
London WC1H 0AP, UK

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