tourr (version 1.1.0)

manual_slice: Manually slice along a variable axis.

Description

The manual slice tour takes the current projection, with display_slice, and changes the slice center.

Usage

manual_slice(
  data,
  proj,
  var = 1,
  nsteps = 20,
  v_rel = 0.01,
  rescale = FALSE,
  sphere = FALSE,
  col = "black",
  half_range = NULL,
  anchor_nav = "topright",
  palette = "Zissou 1",
  ...
)

Arguments

data

numeric matrix, with n rows and p columns

proj

projection from which slices are constructed

var

variable axis to run the center along: 1, ..., p

nsteps

number of changes in center to make

v_rel

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

rescale

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

sphere

if true, sphere all variables

col

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

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.

anchor_nav

position of the anchor: center, topright or off

palette

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

...

other options passed to output device

Examples

# Note that you might need to use the quartz()
# on OSX to see the animation
sphere5 <- data.frame(geozoo::sphere.hollow(5)$points)
proj <- basis_random(5, 2)
manual_slice(sphere5, proj, var=3, nsteps=10, rescale=TRUE, half_range=1.5)