Hello,
I have just released to CRAN the precisePlacement package which provides a
selection of tools that make it easier to place elements onto a (base R)
plot exactly where you want them. It allows users to identify points and
distances on a plot in terms of inches, pixels, margin lines, data units,
and proportions of the plotting space, all in a manner more simple than
manipulating par().
CRAN: https://CRAN.R-project.org/package=precisePlacement
GitHub: https://github.com/rntq472/precisePlacement
Cheers,
Jasper Watson