dti.track.count

Counts the tracts in a TRK, TCK or TSF file without reading
their coordinates, so this works on arbitrarily large tractograms with a
small and constant amount of memory. This is the equivalent of
<code>tckinfo &lt;file&gt; -count</code> in MRtrix.

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) 

dti.track.count function

<dl><dt>filepath</dt>
<dd>character string, path to the <code>TCK</code> or <code>TSF</code> file
to read. Gzip-compressed files (i.e., <code>.tck.gz</code>) are supported and the
compression is detected from the file content, not the file name.</dd>
<dt>chunk_values</dt>
<dd>integer, the number of payload values to read per chunk.
Advanced tuning parameter, see <code>read.dti.tck</code>.</dd></dl>

Arguments

Count the tracts in a DTI tract file. — dti.track.count

<dl>

<dt>filepath</dt>
<dd>character string, path to the <code>TCK</code> or <code>TSF</code> file
to read. Gzip-compressed files (i.e., <code>.tck.gz</code>) are supported and the
compression is detected from the file content, not the file name.</dd>


<dt>chunk_values</dt>
<dd>integer, the number of payload values to read per chunk.
Advanced tuning parameter, see <code>read.dti.tck</code>.</dd>

</dl>

dti.track.count: Count the tracts in a DTI tract file.

Description

Usage

Value

Arguments

Examples