build.mrtrix.header

MRtrix streamlines files (TCK for the tracks, TSF for per-point
values along the tracks) share one header format, they only differ in the
identifier line and in the meaning of the payload. The header is
ASCII text, and its length is stored within the header itself as the offset
at which the binary payload starts.

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) 

build.mrtrix.header function

<dl><dt>header_id</dt>
<dd>character string, the file type identifier, one of 'mrtrix
tracks' (TCK) or 'mrtrix track scalars' (TSF).</dd>
<dt>entries</dt>
<dd>named list of additional header entries.</dd>
<dt>datatype</dt>
<dd>character string, the datatype.</dd>
<dt>count</dt>
<dd>integer, the number of streamlines.</dd>
<dt>offset</dt>
<dd>numeric, the byte offset at which the payload starts.</dd></dl>

Arguments

Build the text header of an MRtrix streamlines file. — build.mrtrix.header

<dl>

<dt>header_id</dt>
<dd>character string, the file type identifier, one of 'mrtrix
tracks' (TCK) or 'mrtrix track scalars' (TSF).</dd>


<dt>entries</dt>
<dd>named list of additional header entries.</dd>


<dt>datatype</dt>
<dd>character string, the datatype.</dd>


<dt>count</dt>
<dd>integer, the number of streamlines.</dd>


<dt>offset</dt>
<dd>numeric, the byte offset at which the payload starts.</dd>

</dl>

build.mrtrix.header: Build the text header of an MRtrix streamlines file.

Description

Usage

Value

Arguments