spinifex (R package)
Shadow puppets are a projection of a 3D object down to a 2D shadow. In the same way, you can project higher data spaces down to 2D. Information about data structure is revealed by rotating the data and watching the shadow change!
spinifex is an open-source R package that enables manual control of a linear projection of multivariate data.
why, thou? Using numeric statistics often leaves obvious visual trends overlooked, this is why data visualization is so important! Unfortunately, graphing at more than 3 variables at a time is difficult. This is where dimension reduction is used!
namesake: The Australian (Spinifex hopping mouse)[https://en.wikipedia.org/wiki/Spinifex_hopping_mouse], a nocturnal desert mouse. >“It spins, it hops and it needs a mouse.” -Di Cook
Image credit: Micheal Sale made shareable on flickr.