Orthogonal three-plane view with optional crosshairs

Creates axial, coronal, and sagittal panels at a given coordinate with harmonized aesthetics. Returns (invisibly) the three ggplot objects after printing them in a single row using base grid (no extra deps).

Usage

plot_ortho(
  vol,
  coord = NULL,
  unit = c("index", "mm"),
  cmap = "grays",
  range = c("robust", "data"),
  probs = c(0.02, 0.98),
  crosshair = TRUE,
  annotate = TRUE,
  downsample = 1L
)

Arguments

vol: A 3D volume handled by `slice()`.
coord: Length-3 coordinate of the target point. Interpreted as voxel indices by default; set `unit = "mm"` to convert using `coord_to_grid()` if available in your environment.
unit: "index" or "mm".
cmap: Palette for the slices.
range: "robust" or "data" for intensity limits shared by all panels.
probs: Quantiles for robust range.
crosshair: Logical; draw crosshair lines.
annotate: Logical; add orientation glyphs.
downsample: Integer decimation for speed.