Ternary plots

General Usage
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I am looking to replicate the figure below (from Wikipedia on the Dirichlet distribution). Is there any way to do this currently in Julia (the vertical color scale is not that important)?

Dirichlet

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This would also be useful for phase diagrams of ternary compounds.

I think plotly can do this, but I only see scatter plots in the example.

Update:
I also found the contour version:

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See work in progress on TernaryPlots.jl package here.

TernaryPlot_contours
TernaryPlot_contours580×570 23.1 KB

ternary_plot_color_contours
ternary_plot_color_contours580×570 91.3 KB

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Thanks! But am I missing something or there is no Julia page for Ternary plots/contours there? Sorry, I have never come across Plotly.

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I just posted the documentation of the plotly framework which can be used from different languages.
The julia binding would be the PlotlyJS.jl package.
Here is a page about ternaries from the julia package:

http://juliaplots.org/PlotlyJS.jl/stable/examples/ternary

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I’m sorry but I don’t think there is any way to make a ternary contour in plotly, which is a pity because in python you can do it.