Correlation loading plot with with observations

[Drosof]

Dear author of plsdepot package,
Sometimes, its is interesting to explore how individual observations relate to the X and Y variables analyzed.
In this regard that would be interesting to project the observations on the correlation plot, as suggested in this thread (https://stackoverflow.com/questions/52906389/correlation-loading-plot-from-plsr-with-observations-using-ggplot2). The plot example in the thread was produced from a commercial software. I tried to reproduce a similar plot using pls/plsdepot packages and ggplot.
I guess that would require a transformation step of both the x.scores and y.scores so that individual observations (rows) can be projected on a correlation loading scale (-1: 1). I haven't yet found a solution to that. Any suggestions will be much appreciated.