Date: Jun 24, 2013 5:39 PM
Author: Ken.Pledger@vuw.ac.nz
Subject: Re: Which coordinates in the tetrahedron diagram?
In article <kqa5p6$v3s$1@news.albasani.net>,

"IV" <ivgroups@onlinehome.de> wrote:

> .... For the representation of three components, triangle diagrams (equilateral

> triangle) are used, for example in geology and chemistry. I found that there

> are two different types of such triangular diagrams: Sometimes the

> coordinates are parallels to the sides, and another time perpendicular to

> the sides. I couldn't find references in the literature....

You may get some help by searching for "trilinear coordinates" and

"barycentric coordinates".

Ken Pledger.