simulate_moving_circles: Simulate Moving Circles Pattern

In BioGSP: Biological Graph Signal Processing for Spatial Data Analysis

Simulate Moving Circles Pattern

Description

Generate patterns of two circles moving toward each other horizontally. Creates mutually exclusive signals where overlapping pixels are assigned to signal_1 (circle 1). The circles start at fixed horizontal distances from the midline and move toward the center.

Usage

simulate_moving_circles(
  grid_size = 60,
  radius_seq = 6:14,
  n_steps = 10,
  center_distance = 30,
  radius2_factor = 1.5,
  seed = NULL,
  verbose = TRUE
)

Arguments

grid_size	Size of the spatial grid (default: 60)
radius_seq	Vector of radii for circle 1 (default: 6:14)
n_steps	Number of movement steps (default: 10)
center_distance	Initial horizontal distance from midline for both centers (default: 30)
radius2_factor	Circle 2 radius = radius_seq * radius2_factor (default: 1.5)
seed	Random seed for reproducibility (default: 123)
verbose	Logical; if TRUE, show progress bar and messages (default: TRUE)

Value

List of data frames, each containing X, Y coordinates and signal_1, signal_2 binary signals

Examples

# Generate moving circles patterns with default parameters
patterns <- simulate_moving_circles()

# Custom parameters
patterns <- simulate_moving_circles(
  grid_size = 80,
  radius_seq = c(8, 12, 16),
  n_steps = 8,
  center_distance = 35,
  radius2_factor = 1.2
)

BioGSP documentation built on Feb. 2, 2026, 5:06 p.m.