Suggestion: adding alpha parameter to TernaryPoints

[svalenzl]

Apologies if the option already exists, I could not find how to add an alpha option to increase the visibility of the points that overlap. Thanks for this useful package.

[ms609]

Thanks for the query. I've tried to keep functions such as TernaryPoints as consistent with the corresponding graphics functions (here, points) as possible. So the best way to achieve what you're looking to do as things stand is given in an example at:

https://ms609.github.io/Ternary/articles/Ternary.html#plot-two-stylised-plots-side-by-side-and-plot-data

AddToTernary(graphics::points, data_points, pch = 21, cex = 2.8, 
             bg = vapply(data_points, 
                         function (x) rgb(x[1], x[2], x[3], 128,
                                          maxColorValue = 255),
                         character(1))
             )

If you don't need points to be different colours, you could do something simpler like TernaryPoints(data_points, col = rgb(0, 0, 0, alpha = 0.8))

Hope that helps!