Turning three X-Y plots into a ternary contour

[bsherrer]

So I have three plots of the form mole fraction of (chemical) vs temperature and I want to make a ternary contour based on that like in this picture.

contour.png

Is that possible in Excel's vanilla state? And if not, what should I download to plot this?

Thank you in advance.

[MrShorty]

I'm sure it is possible, but Excel is not going to know how to do it.

One starting point, Andy Pope's XY scatter chart simulator: http://andypope.info/charts/3drotate.htm This will give you a place to start simulating a 3D scatter plot using the built in 2D scatter plot.

Can I assume you are already familiar with the geometry needed to create a triangle ternary diagram? If not, you will also need to spend some time with the geometry to understand how to convert the "3" dimensions of the ternary into the triangle plot (probably easier to learn this in 2D before trying to do this with the additional T dimension).