This visualization method is particularly useful in domains where one works with three elements with varying proportions, for example in chemistry or petrology.
This tool lets you quickly create a ternary diagram representing points and the projection lines connecting each point to each axis.
There are two approaches for ternary graphs:
- Either segments corresponding to the orthogonal projection of the points on the axes give the information on the relative proportions of the three elements.
- Or the projection parallel to the axis A onto the axis B corresponds to the coordinate of the point along the axis B, where B is after A when turning counterclockwise.
XLSTAT currently allows only the second approach.
This analysis is available in the XLStat-Basic addin for Microsoft Excel™