On Thu, 11 May 2023, Artur T. wrote: > Hi all, > > And especially Jack. > > I found a very nice example of you in my archive for what you call a > double density plot: > https://github.com/gretl-project/material-on-gretl/wiki/Plotting > > There you merge the matrices d1 and d2 to a single one before > plotting. I would like to generalize this for k matrices but do not > find a clever way. > > Has anybody an idea? This is more or less what happens in my new package fdensity. Basically, I interpolate neighbouring points and send the whole thing to gnuplot.