Convert output of GR.tricont() (GR.SVG) to something Plots can interact with

Hello all,

I’m trying to use GR's tricont function as I can’t find out how to do this using Plots alone, and then put the output of this onto an existing plot generated by Plots. However, I cannot figure out how to turn a GR.SVG into a plot. Can anyone advise me how to go about doing this?

For some additional context. I have a triangular grid the size of an equilateral triangle, and I would like to use tricont to construct a contour plot over this equilateral triangle. Please let me know if I’m looking in the wrong direction.