Select voxels by their direct indices in the masked data.
Examples
# Select first 10 voxels
sel <- index_selector(1:10)
# Select specific voxels
sel <- index_selector(c(1, 5, 10, 20))
Select voxels by their direct indices in the masked data.
# Select first 10 voxels
sel <- index_selector(1:10)
# Select specific voxels
sel <- index_selector(c(1, 5, 10, 20))