cifti.compute.index.ranges

The <code>IndexOffset</code> and <code>IndexCount</code> fields of a brain model entry say which
matrix entries it covers. They are derived from the index lists (and from the surface
sizes or the volume for a model that covers everything), and they have to cover the
dimension without gaps, so they are always computed here rather than taken from the
caller.

internal

Provides functions to read and write neuroimaging data in various file formats, with a focus on 'FreeSurfer' formats. This includes, but is not limited to, the following file formats: 1) MGH/MGZ/NIFTI format files, which can contain multi-dimensional images or other data. Typically they contain time-series of three-dimensional brain scans acquired by magnetic resonance imaging (MRI). They can also contain vertex-wise measures of surface morphometry data. The MGH format is named after the Massachusetts General Hospital, and the MGZ format is a compressed version of the same format. 2) 'FreeSurfer' morphometry data files in binary 'curv' format. These contain vertex-wise surface measures, i.e., one scalar value for each vertex of a brain surface mesh. These are typically values like the cortical thickness or brain surface area at each vertex. 3) Annotation file format. This contains a brain surface parcellation derived from a cortical atlas. 4) Surface file format. Contains a brain surface mesh, given by a list of vertices and a list of faces.

Tim Schc3<a4>fer

freesurferformats

Read and Write 'FreeSurfer' Neuroimaging File Formats

Tim Schäfer

Van Essen Lab 

Montreal Neurological Institute (MNI) 

cifti.compute.index.ranges function

<dl><dt>models</dt>
<dd>list of brain model entries, see <code>cifti.brain.model.surface</code>.</dd>
<dt>volume</dt>
<dd>a volume or <code>NULL</code>, see <code>cifti.volume</code>. Needed for a volume
model that has no voxel index list (which covers all voxels of the volume).</dd></dl>

Arguments

Compute the index ranges of brain model entries. — cifti.compute.index.ranges

<dl>

<dt>models</dt>
<dd>list of brain model entries, see <code>cifti.brain.model.surface</code>.</dd>


<dt>volume</dt>
<dd>a volume or <code>NULL</code>, see <code>cifti.volume</code>. Needed for a volume
model that has no voxel index list (which covers all voxels of the volume).</dd>

</dl>

cifti.compute.index.ranges: Compute the index ranges of brain model entries.

Description

Usage

Value

Arguments