vol.mask.from.segmentation {fsbrain}

Extract subset from a volume by value.

Description

Extract subset from a volume by value, set all other voxel values to 'NA'. Typically used to extract a brain structure (like corpus callosum) from a volume segmentation (like the 'mri/aseg.mgz' file of a subject). You should consider passing the volume and the include values as integers.

Usage

vol.mask.from.segmentation(volume, include_values)

Arguments

volume

numeric 3D array

include_values

numerical vector, the intensity values which qualify a voxel to be part of the result (without being set to NA)

Value

numerical array with same dimensions as the input volume. All values which are not part of 'include_values' replaced with 'NA'.