plot_ortho: Orthogonal three-plane view with optional crosshairs

In neuroim2: Data Structures for Brain Imaging Data

Orthogonal three-plane view with optional crosshairs

Description

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.

neuroim2 documentation built on April 16, 2026, 5:07 p.m.