27.14.12 3D Tetrahedral

3D Tetrahedral.png

Data Requirements

Select two Z columns (XYZZ) or a range of data from two Z columns. The Z columns may be multiples of 2, in which case, Z-Z pairs will be grouped in the layer and plot Symbol Edge Color will be incremented.

Creating the Graph

Highlight the source data and

select Plot > 3D: 3D Tetrahedral.

Template

  • GL3DTETRAHEDRAL.otp (OpenGL only)

(Installed to the Origin program folder).

Notes

Unlike 3D graphs in the Cartesian coordinate system, there are four axes in the 3D ternary system, defined as X, Y, Z and Zh. The Zh axis is perpendicular to the plane of the triangle. Correspondingly, there will also be four axis planes: XY, YZh, ZhX and ZZh (see the Planes tab in Plot Details).