How to create a 3-D ternary plot

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David
David 2011-3-2
I'm trying to create a 3D ternary plot similar to this one:
http://upload.wikimedia.org/wikipedia/en/e/ed/Saddle_Azeotrope.png
I found some code that allows me to make flat ternary plots, but I need to be able to diagram the height for a project. Is it possible to create something like that in matlab?

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回答（2 个）

Matt Fig
Matt Fig 2011-3-2
I don't know of any built-in way to do exactly this in basic MATLAB. It could be done as a custom function, but I don't think it would be a quick and easy undertaking. You might want to search the FEX. Here is one example that showed up (there may be others as well):
http://www.mathworks.com/matlabcentral/fileexchange/2299-ternplot
Paulo Silva
Paulo Silva 2011-3-2
surf surfc?
[X,Y,Z] = peaks(30);
surfc(X,Y,Z)
colormap hsv
axis([-3 3 -3 3 -10 5])
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Matt Fig
Matt Fig 2011-3-2
SURFC (and cousins) will plot a surface, but if you look at the OP's link, the three planes have meaning when viewing the surface. If I were going to make a custom version of such functionality, I would think SURF would be an integral part of it.

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