mrtrix.track.iterator

Create an iterator over the tracts of an MRtrix TCK or TSF file.

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) 

mrtrix.track.iterator function

<dl><dt>filepath</dt>
<dd>character string, path to the file.</dd>
<dt>skip_tracks</dt>
<dd>integer, the number of tracts to skip.</dd>
<dt>bbox</dt>
<dd>numeric vector of length 6 or NULL, a bounding box, see
<code>read.dti.tck</code>.</dd>
<dt>chunk_values</dt>
<dd>integer, the number of payload values to read per chunk.
This only affects the peak memory usage and the I/O granularity of the
iterator, and is rarely needed. For TRK files it is ignored, since those
records are read one at a time.</dd></dl>

Arguments

Create an iterator over the tracts of an MRtrix TCK or TSF file. — mrtrix.track.iterator

<dl>

<dt>filepath</dt>
<dd>character string, path to the file.</dd>


<dt>skip_tracks</dt>
<dd>integer, the number of tracts to skip.</dd>


<dt>bbox</dt>
<dd>numeric vector of length 6 or NULL, a bounding box, see
<code>read.dti.tck</code>.</dd>


<dt>chunk_values</dt>
<dd>integer, the number of payload values to read per chunk.
This only affects the peak memory usage and the I/O granularity of the
iterator, and is rarely needed. For TRK files it is ignored, since those
records are read one at a time.</dd>

</dl>

mrtrix.track.iterator: Create an iterator over the tracts of an MRtrix TCK or TSF file.

Description

Usage

Value

Arguments