display_slice: Display tour path with a sliced scatterplot

In tourr: Tour Methods for Multivariate Data Visualisation

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)

tourr documentation built on May 29, 2024, 11:22 a.m.