Function reference • tourr

In-built data
`Flea measurements` `flea`	Flea beatle measurements
`Laser measurements` `laser`	Turnable laser measurements from Bellcore
`Olive oil measurements` `olive`	Olive oil samples from Italy
`Ozone measurements` `ozone`	Monthly ozone measurements over Central America
`Places Ratings` `places`	Ratings of different locations across North America
`Rat CNS` `ratcns`	Rat CNS Gene Expression
`Tropical Atmosphere Ocean` `tao`	Tropical Atmosphere Ocean data
`t1`	Saved history of guided tour with holes
Pre-processing Functions for data pre-processing
`center()`	Center a numeric vector by subtracting off its mean.
`rescale()`	Rescale a matrix or data frame
Tour path construction Functions for constructing various tour paths
`grand_tour()`	A grand tour path.
`guided_tour()`	A guided tour path.
`guided_section_tour()`	A guided section tour path.
`little_tour()`	A little tour path.
`local_tour()`	A local tour path.
`radial_tour()`	A radial tour path.
`planned_tour()` `planned2_tour()`	A planned tour path.
`dependence_tour()`	A dependence tour path.
`frozen_guided_tour()`	The frozen guided tour
`frozen_tour()`	A frozen tour path.
`manual_slice()`	Manually slice along a variable axis.
Tour display Functions for various tour display
`animate()`	Animate a tour path.
`display_andrews()` `animate_andrews()`	Andrews' curves tour path animation.
`display_density2d()` `animate_density2d()`	Display tour path with a density and scatterplot
`display_depth()` `animate_depth()`	Display 3d projection with depth cues
`display_dist()` `animate_dist()`	1d distribution tour path animation.
`display_faces()` `animate_faces()`	Chernoff faces tour path animation.
`display_groupxy()` `animate_groupxy()`	Display 2D tour projections displayed separately by groups
`display_idx()` `animate_idx()`	Display a 1D linear aggregation index
`display_image()` `animate_image()`	Image tour path animation.
`display_pca()` `animate_pca()`	Display tour path with principal component scores with original axes
`display_pcp()` `animate_pcp()`	Parallel coordinates tour path animation.
`display_sage()` `animate_sage()`	Display tour path with a sage scatterplot
`display_scatmat()` `animate_scatmat()`	Scatterplot matrix tour path animation.
`display_slice()` `animate_slice()`	Display tour path with a sliced scatterplot
`display_stars()` `animate_stars()`	Star glyph tour path animation.
`display_stereo()` `animate_stereo()`	Anaglpyh tour path animation.
`display_trails()` `animate_trails()`	Display tour path with trails
`display_xy()` `animate_xy()`	Display tour path with a scatterplot
Indices Index functions in guided tour
`cmass()`	Central mass index.
`holes()`	Holes index.
`lda_pp()`	LDA projection pursuit index.
`pda_pp()`	PDA projection pursuit index.
`dcor2d()`	Distance correlation index.
`splines2d()`	Spline based index.
`slice_index()`	Section pursuit index.
`norm_bin()` `norm_kol()`	Normality index.
Search functions Functions for index optimisation in guided tour
`search_better()`	Search for a better projection near the current projection.
`search_better_random()`	Search for a better projection using simulated annealing
`search_geodesic()`	A pseudo-derivative, line search algorithm.
`search_polish()`	Search very locally to find slightly better projections to polish a broader search.
`search_posse()`	Search for a better projection based on Poss, 1995
Misc calculation Functions for calculating various tour components
`anchored_orthogonal_distance()`	Calculate orthogonal distances
`andrews()`	Compute Andrews' curves
`angular_breaks()`	Returns n equidistant bins between -pi and pi
`linear_breaks()`	Returns n equidistant bins between a and b
`estimate_eps()`	Estimate cutoff eps for section pursuit.
`interpolate()`	Interpolate geodesically between bases.
`path_dist()`	Compute distance matrix from bases.
`path_index()`	Compute index values for a tour history.
`proj_dist()`	Calculate the distance between two bases.
Utility
`path_curves()`	Draw the path that the geodesics took.
`render()`	Render frames of animation to disk
`render_gif()`	Render frames of animation to a gif file
`render_proj()`	Render plotly animation frame
`render_anim()`	Render a set of animation frames
`draw_tour_axes()`	Draw tour axes on the projected data with base graphics
`save_history()`	Save tour history.
`areColors()`	Test if all entries are colors
`mapColors()`	Map vector of factors to color
`mapShapes()`	Map vector of factors to pch
`sphere_data()`	Sphere a matrix (or data frame) by transforming variables to principal components.

Reference

In-built data

Pre-processing

Tour path construction

Tour display

Indices

Search functions

Misc calculation

Utility