Examples in 3D: part II

This vignette contains part II of a set of examples on how to use clugenr in 3D. Examples require the following setup code:

library(clugenr)    # The clugenr library
options(rgl.useNULL = TRUE)  # Create RGL plots in systems without displays (CI)
library(rgl)
setupKnitr(autoprint = TRUE) # Render RGL plots directly on generated page

# Load helper functions for plotting examples
source("plot_examples_3d.R", local = knitr::knit_global())

# Keep examples reproducible in newer R versions
RNGversion("3.6.0")

The 3D examples were plotted with the plot_examples_3d() function available here.

Lateral dispersion and placement of point projections on the line

seed <- 456

Normal projection placement (default): proj_dist_fn = "norm"

e064 <- clugen(3, 4, 600, c(1, 0, 0), pi / 2, c(20, 20, 20), 13, 2, 0.0, seed = seed)
e065 <- clugen(3, 4, 600, c(1, 0, 0), pi / 2, c(20, 20, 20), 13, 2, 1.0, seed = seed)
e066 <- clugen(3, 4, 600, c(1, 0, 0), pi / 2, c(20, 20, 20), 13, 2, 3.0, seed = seed)
plot_examples_3d(list(e = e064, t = "e064: lateral_disp = 0"),
                 list(e = e065, t = "e065: lateral_disp = 1"),
                 list(e = e066, t = "e066: lateral_disp = 3"))

Uniform projection placement: proj_dist_fn = "unif"

e067 <- clugen(3, 4, 600, c(1, 0, 0), pi / 2, c(20, 20, 20), 13, 2, 0.0, seed = seed,
               proj_dist_fn = "unif")
e068 <- clugen(3, 4, 600, c(1, 0, 0), pi / 2, c(20, 20, 20), 13, 2, 1.0, seed = seed,
               proj_dist_fn = "unif")
e069 <- clugen(3, 4, 600, c(1, 0, 0), pi / 2, c(20, 20, 20), 13, 2, 3.0, seed = seed,
               proj_dist_fn = "unif")
plot_examples_3d(list(e = e067, t = "e067: lateral_disp = 0"),
                 list(e = e068, t = "e068: lateral_disp = 1"),
                 list(e = e069, t = "e069: lateral_disp = 3"))

Custom projection placement using the Beta distribution

# Custom proj_dist_fn: point projections placed using the Beta distribution
proj_beta <- function(len, n) len * rbeta(n, 0.1, 0.1) - len / 2
e070 <- clugen(3, 4, 600, c(1, 0, 0), pi / 2, c(20, 20, 20), 13, 2, 0.0, seed = seed,
               proj_dist_fn = proj_beta)
e071 <- clugen(3, 4, 600, c(1, 0, 0), pi / 2, c(20, 20, 20), 13, 2, 1.0, seed = seed,
               proj_dist_fn = proj_beta)
e072 <- clugen(3, 4, 600, c(1, 0, 0), pi / 2, c(20, 20, 20), 13, 2, 3.0, seed = seed,
               proj_dist_fn = proj_beta)
plot_examples_3d(list(e = e070, t = "e070: lateral_disp = 0"),
                 list(e = e071, t = "e071: lateral_disp = 1"),
                 list(e = e072, t = "e072: lateral_disp = 3"))

Controlling final point positions from their projections on the cluster-supporting line

seed <- 12321
# Custom proj_dist_fn: point projections placed using the Beta distribution
proj_beta <- function(len, n) len * rbeta(n, 0.1, 0.1) - len / 2

Points on hyperplane orthogonal to cluster-supporting line (default): point_dist_fn = "n-1"

e073 <- clugen(3, 5, 1200, c(1, 0, 0), pi / 3, c(20, 20, 20), 22, 3, 2, seed = seed)
e074 <- clugen(3, 5, 1200, c(1, 0, 0), pi / 3, c(20, 20, 20), 22, 3, 2, seed = seed,
               proj_dist_fn = "unif")
e075 <- clugen(3, 5, 1200, c(1, 0, 0), pi / 3, c(20, 20, 20), 22, 3, 2, seed = seed,
               proj_dist_fn = proj_beta)
plot_examples_3d(list(e = e073, t = "e073: proj_dist_fn = 'norm' (default)"),
                 list(e = e074, t = "e074: proj_dist_fn = 'unif'"),
                 list(e = e075, t = "e075: custom proj_dist_fn (Beta dist.)"))

Points around projection on cluster-supporting line: point_dist_fn = "n"

e076 <- clugen(3, 5, 1200, c(1, 0, 0), pi / 3, c(20, 20, 20), 22, 3, 2, seed = seed,
               point_dist_fn = "n")
e077 <- clugen(3, 5, 1200, c(1, 0, 0), pi / 3, c(20, 20, 20), 22, 3, 2, seed = seed,
               point_dist_fn = "n", proj_dist_fn = "unif")
e078 <- clugen(3, 5, 1200, c(1, 0, 0), pi / 3, c(20, 20, 20), 22, 3, 2, seed = seed,
               point_dist_fn = "n", proj_dist_fn = proj_beta)
plot_examples_3d(list(e = e076, t = "e076: proj_dist_fn = 'norm' (default)"),
                 list(e = e077, t = "e077: proj_dist_fn = 'unif'"),
                 list(e = e078, t = "e078: custom proj_dist_fn (Beta dist.)"))

Custom point placement using the exponential distribution

# Custom point_dist_fn: final points placed using the Exponential distribution
clupoints_n_1_exp <- function(projs, lat_std, len, clu_dir, clu_ctr) {
  dist_exp <- function(npts, lstd) lstd * rexp(npts, rate = 2 / lstd)
  clupoints_n_1_template(projs, lat_std, clu_dir, dist_exp)
}
e079 <- clugen(3, 5, 1200, c(1, 0, 0), pi / 3, c(20, 20, 20), 22, 3, 2, seed = seed,
               point_dist_fn = clupoints_n_1_exp)
e080 <- clugen(3, 5, 1200, c(1, 0, 0), pi / 3, c(20, 20, 20), 22, 3, 2, seed = seed,
               point_dist_fn = clupoints_n_1_exp, proj_dist_fn = "unif")
e081 <- clugen(3, 5, 1200, c(1, 0, 0), pi / 3, c(20, 20, 20), 22, 3, 2, seed = seed,
               point_dist_fn = clupoints_n_1_exp, proj_dist_fn = proj_beta)
plot_examples_3d(list(e = e079, t = "e079: proj_dist_fn = 'norm' (default)"),
                 list(e = e080, t = "e080: proj_dist_fn = 'unif'"),
                 list(e = e081, t = "e081: custom proj_dist_fn (Beta dist.)"))