.bind_elements2df       Binds replicated elements of a list as columns
                        of a data frame.
.init4proto             Initialize common obj from .global 'ggtour()'
                        objects & test their existence
.lapply_rep_len         Replicate all vector elements of a list
BreastCancer_na.rm      Wisconsin Breast Cancer Database
PimaIndiansDiabetes_long
                        Pima Indians Diabetes Dataset, long
PimaIndiansDiabetes_wide
                        Pima Indians Diabetes Dataset, wide
animate_gganimate       Animate a ggtour as a .gif via '{gganimate}'
animate_plotly          Animate a ggtour as and HTML widget via
                        '{plotly}'
append_fixed_y          Append a fixed vertical height
array2df                Turns a tour path array into a long data frame.
basis_guided            Solve for the last basis of a guided tour.
basis_half_circle       Create a basis that gives uniform contribution
                        in a circle
basis_odp               The basis of Orthogonal Discriminant Projection
                        (ODP)
basis_olda              The basis of Orthogonal Linear Discriminant
                        Analysis (OLDA)
basis_onpp              The basis of Orthogonal Neighborhood Preserving
                        Projection (ONPP)
basis_pca               The basis of Principal Component Analysis (PCA)
create_manip_space      Create a manipulation space to rotate the
                        manipulation variable in.
devMessage              Development message
draw_basis              Draw a basis on a static ggplot
facet_wrap_tour         Wrap a 1d ribbon of panels into 2d for
                        animation
filmstrip               Create a "filmstrip" of the frames of a ggtour.
ggtour                  Prepare a new grammar of graphics tour
interpolate_manual_tour
                        Interpolates a manual tour
is_any_layer_class      Check ggplot layers for use of a specific geom
is_orthonormal          Orthonormality of a matrix
manip_var_of            Suggest a manipulation variable.
manual_tour             Produce the series of projection bases to
                        rotate a variable into and out of a projection.
map_absolute            Manually offset and scale the first 2 columns
                        of a matrix or data.frame.
map_relative            Returns the axis scale and position.
penguins_na.rm          Size measurements for adult foraging penguins
                        near Palmer Station, Antarctica
play_manual_tour        Animate a manual tour. superseded
play_tour_path          Animates the provided tour path.
plot_pca                Plot 2 components of Principal Component
                        Analysis
plot_pca_scree          Plot 2 components of Principal Component
                        Analysis
proto_basis             Tour proto for a 2D and 1D basis axes
                        respectively
proto_default           Wrapper function for default 2D/1D tours
                        respectively.
proto_density           Tour proto for data, 1D density, with rug marks
proto_density2d         Tour proto for data, 1D density, with rug marks
proto_frame_cor2        Tour proto for frames square correlation
proto_hex               Tour proto for data, hexagonal heatmap
proto_highlight         Tour proto highlighing specified points
proto_hline0            Tour proto adding a vertical/horizontal line
proto_origin            Tour proto for data origin zero mark
proto_point             Tour proto for data point
proto_text              Tour proto for data, text labels
proto_text_repel        Tour proto for data, text labels that repel
render_                 Prepare the ggplot object before passing to
                        either animation package.
render_gganimate        Render the frames as a _gganimate_ animation.
render_plotly           Animation the frames as a HTML widget.
rotate_manip_space      Performs a rotation on the manipulation space
                        of the given manip var.
run_app                 Runs a shiny app demonstrating manual tours
save_history            Save a tour basis array.
scale_colour_discrete   Set default color & fill for discrete variables
scale_sd                Preprocess numeric variables
spinifex                spinifex
theme_spinifex          Theme spinifex
view_frame              Plot a single frame of a manual tour.
view_manip_space        Plot 2D projection frame and return the axes
                        table.
weather                 Sample dataset of daily weather observations
                        from Canberra airport in Australia.
wine                    The wine dataset from the UCI Machine Learning
                        Repository.
