Hi mattvang and Badunit,
mattvang wrote to Banunit:
I also need to make ternary plots for my thesis. Since mobile me is now inactive, I cannot access the file you posted. Do you still have it?
I tried to download Badunit's file (that post was June 2011) but could not find it.
Badunit wrote:
The formula for "X" is =IF(B="","",G/1.73205+2*D/1.73205).
I am interested to know what formulas are not shown. What are G and D?
A ternary graph is used to plot percentages of sand, silt and clay. I got this far with an image to go behind the graph:
I constructed an equilateral triangle because the triangle shape in Numbers is not truly equilateral.
If the X axis is to be Sand, we will need to reverse the values (100-Sand) to plot high values on the left.
Getting there!
Ian.