Simulate held-out complex spatial domain geometries — simulate_complex_spatial

Generates two- or three-dimensional geometries designed to stress junctions, narrow channels, nonconvex boundaries, and severe regional concentration. These shapes are separate from those in [simulate_spatial_domains()].

Usage

simulate_complex_spatial_domains(
  n = 50000L,
  shape = c("voronoi_mosaic", "radial_sectors", "checkerboard_junctions",
    "tubular_network", "braided_channels", "shells_3d"),
  density_profile = c("uniform", "extreme"),
  noise_type = c("random", "boundary", "patch"),
  noise = 0.25,
  samples = 1L,
  k = 5L,
  seed = 1L
)

Arguments

n: Number of observations.
shape: Domain geometry.
density_profile: Either `"uniform"` or `"extreme"`.
noise_type: Either `"random"`, `"boundary"`, or `"patch"`.
noise: Fraction of labels to corrupt. Each true class present in a specimen retains one correct exemplar; a rate that makes this impossible is rejected.
samples: Number of independent tissues.
k: Number of domains.
seed: Random seed.

Value

A `spatial_refinement_benchmark`.

Examples

sim <- simulate_complex_spatial_domains(
  n = 1000, shape = "tubular_network", density_profile = "extreme"
)
table(sim$truth)
#> 
#> cluster1 cluster2 cluster3 cluster4 cluster5 
#>      720       39       21       14      206