Hi,

Here are some links, from previous posts, on ternary plots.

http://www.sfu.ca/~marshall/ternplot.htm
http://www.uni-wuerzburg.de/mineralo...g/ternary.html
http://www.geologynet.com/programs/ternplot.xls
ftp://www-sst.unil.ch/ftp/jfurrer/Trix_fr.zip

Cheers
Andy

Frank Martin wrote:
I have Excel2003 and I need some way to form triangular/ternary charts.

Is there any way, or is there some plug-in available?

Please help, Frank



--

Andy Pope, Microsoft MVP - Excel
http://www.andypope.info