Ternary Diagrams

[Allison]

Trying to contour a ternary diagram and contours don't match the Z values posted in the data file. Legend shows weird range of numbers that don't match data file. Granted, I only have four data points.

 

Attached are the data file and the 2D output. The data is related to geotechnical testing (plasticity) of filter cake using percentages of beneficiation, digestion and lime mud

 

Is there anything I can do to get better contours?

filter cake_plasticity.rwdat

Jadar tailings_plasticity ternary_w contours.Rw2D

[Allison]

Okay, so I thought that RW would contour the data but its contouring the data point density. Is there a means of contouring the chemical data so that the output would look something like the attached?

Boron in Tailings Mixture Design 07-16-19.pptx

[Allison]

Thanks, Tom! When I try this the grid doesn't clip entirely within the polygon (see attached). I used the null value under Filter type/Exterior and I used the triangle vertices to build the polygon. Is this a gridding algorithm issue or something else?

 

Allison

plasticity ternary_w contours.Rw2D

[Allison]

That worked. Thanks!