indices: Extract indices

In bbuchsbaum/neuroim2: Data Structures for Brain Imaging Data

Extract indices

Description

Extract indices

Usage

indices(x)

Arguments

x	the object to extract indices

Value

A vector of indices from x.

Examples

# Create a NeuroSpace object with 3mm voxels
space <- NeuroSpace(c(10,10,10), spacing=c(3,3,3))

# Create ROI coordinates in voxel space
coords <- matrix(c(1,1,1, 2,2,2), ncol=3, byrow=TRUE)

# Create ROI volume
roi_vol <- ROIVol(space, coords, data=c(1,2))

# Get linear indices of ROI voxels
idx <- indices(roi_vol)
# These indices can be used to index into a 3D array of size 10x10x10

bbuchsbaum/neuroim2 documentation built on Feb. 26, 2025, 3:49 p.m.