show_sage {detourr}  R Documentation 
An implementation of the Sage Tour described in Laa et al., 2021. It uses a radial transformation on the projected data so that the relative volume is preserved when the data is projected. I.e. a uniform distribution in the original space will remain uniformly distributed in the projected space. Includes both 2D and 3D variations.
show_sage(
x,
...,
palette = viridis,
center = TRUE,
axes = TRUE,
edges = NULL,
paused = TRUE,
scale_factor = NULL,
gamma = 1,
R = NULL
)
x 
a 
... 
used to support aesthetic parameters for the plot, including

palette 
Colour palette to use with the colour aesthetic. Can be:

center 
If TRUE, center the projected data to (0, 0, 0). 
axes 
Can be one of:

edges 
A two column numeric matrix giving indices of ends of lines. 
paused 
whether the widget should be initialised in the 'paused' state 
scale_factor 
used as a multiplier for the point coordinates so they are displayed on a sensible range. Defaults to the reciprocal of maximum distance from a point to the origin. 
gamma 
the gamma parameter for scaling the effective dimensionality for the sage tour radial transformation. defaults to 1 
R 
scale for the radial transformation. Defaults to 
This display method produces an interactive scatterplot animation which supports both 2D and 3D tours. Linked selection and filtering is also supported using crosstalk. The set of interactive controls available are:
A timeline with a play / pause button and indicators at the position of each basis used. The basis indicators can be hovered with the mouse to show the index of the basis, or clicked to jump to that basis. The timeline also allows for clicking and dragging of the scrubber to move to any individual frame of the animation.
Orbit controls. For the 2D variant, this allows the projection to be rotated by clicking and dragging from left to right. For the 3D variant, full orbit controls are available by clicking and dragging. For both orbit and pan controls, the scroll wheel can be used to zoom.
Pan controls, which work similarly to orbit controls but move the camera laterally / vertically rather than rotating
Resetting of the orbit and pan controls
Selection and highlighting. Multiple selection is possible by using the shift key
Colouring / brushing of highlighted points
An object of class htmlwidget
Laa, U., Cook, D., & Lee, S. (2021). Burning sage: Reversing the curse of dimensionality in the visualization of highdimensional data. Journal of Computational and Graphical Statistics, 110.
show_scatter
detour(tourr::flea, tour_aes(projection = species, colour = species)) >
tour_path(grand_tour(3), fps = 60) >
show_sage(gamma = 2)