tourr (version 1.1.0)

display_slice: Display tour path with a sliced scatterplot

Description

Animate a 2D tour path with a sliced scatterplot.

Usage

display_slice(
  center = TRUE,
  axes = "center",
  half_range = NULL,
  col = "black",
  pch_slice = 20,
  pch_other = 46,
  cex_slice = 2,
  cex_other = 1,
  v_rel = NULL,
  anchor = NULL,
  anchor_nav = "off",
  edges = NULL,
  edges.col = "black",
  palette = "Zissou 1",
  ...
)
animate_slice(data, tour_path = grand_tour(), rescale = FALSE, ...)

Arguments

center

if TRUE, centers projected data to (0,0). This pins the center of data cloud and make it easier to focus on the changing shape rather than position.

axes

position of the axes: center, bottomleft or off

half_range

half range to use when calculating limits of projected. If not set, defaults to maximum distance from origin to each row of data.

col

color to use for points, can be a vector or hexcolors or a factor. Defaults to "black".

pch_slice

marker for plotting points inside the slice. Defaults to 20.

pch_other

marker for plotting points outside the slice. Defaults to 46.

cex_slice

size of the points inside the slice. Defaults to 2.

cex_other

size if the points outside the slice. Defaults to 1.

v_rel

relative volume of the slice. If not set, suggested value is calculated and printed to the screen.

anchor

A vector specifying the reference point to anchor the slice. If NULL (default) the slice will be anchored at the data center.

anchor_nav

position of the anchor: center, topright or off

edges

A two column integer matrix giving indices of ends of lines.

edges.col

colour of edges to be plotted, Defaults to "black.

palette

name of color palette for point colour, used by hcl.colors, default "Zissou 1"

...

other arguments passed on to animate and display_slice

data

matrix, or data frame containing numeric columns

tour_path

tour path generator, defaults to 2d grand tour

rescale

Default FALSE. If TRUE, rescale all variables to range [0,1].

Examples

# Generate samples on a 3d and 5d hollow sphere using the geozoo package
sphere3 <- geozoo::sphere.hollow(3)$points
sphere5 <- geozoo::sphere.hollow(5)$points

# Columns need to be named before launching the tour
colnames(sphere3) <- c("x1", "x2", "x3")
colnames(sphere5) <- c("x1", "x2", "x3", "x4", "x5")

# Animate with the slice display using the default parameters
animate_slice(sphere3)
animate_slice(sphere5)

# Animate with off-center anchoring
anchor3 <- matrix(rep(0.7, 3), ncol=3)
anchor5 <- matrix(rep(0.3, 5), ncol=5)
animate_slice(sphere3, anchor = anchor3)
# Animate with thicker slice to capture more points in each view
animate_slice(sphere5, anchor = anchor5, v_rel = 0.02)