spinifex is a package that extends the package tourr.
It builds the functionality for manual tours and allows other
tours to be rendered by plotly or gganimate. Tours are a class of
dynamic linear (orthogonal) projections of numeric multivariate data from
p down to d dimensions that are viewed as an animation as p-space is
rotated. Manual tours manipulate a selected variable, exploring how they
contribute to the sensitivity of the structure in the projection. This is
particularly useful after finding an interesting basis, perhaps via a
guided tour optimizing the projection for some objective function.