read.nifti.values

Read <code>num_values</code> voxel values of the data type described by the <code>datatype</code> and <code>bitpix</code> fields of
a header, in the endianness of the file. This is the shared low level reading code of the NIFTI and ANALYZE
readers.

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) 

read.nifti.values function

<dl><dt>fh</dt>
<dd>connection to read from, positioned at the first value.</dd>
<dt>datatype</dt>
<dd>integer, the <code>datatype</code> header field.</dd>
<dt>bitpix</dt>
<dd>integer, the <code>bitpix</code> header field.</dd>
<dt>num_values</dt>
<dd>integer, the number of values to read.</dd>
<dt>endian</dt>
<dd>character string, the endianness of the file, 'little' or 'big'.</dd></dl>

Arguments

Read raw voxel values of a NIFTI v1/v2 or ANALYZE file from a connection. — read.nifti.values

<dl>

<dt>fh</dt>
<dd>connection to read from, positioned at the first value.</dd>


<dt>datatype</dt>
<dd>integer, the <code>datatype</code> header field.</dd>


<dt>bitpix</dt>
<dd>integer, the <code>bitpix</code> header field.</dd>


<dt>num_values</dt>
<dd>integer, the number of values to read.</dd>


<dt>endian</dt>
<dd>character string, the endianness of the file, 'little' or 'big'.</dd>

</dl>

read.nifti.values: Read raw voxel values of a NIFTI v1/v2 or ANALYZE file from a connection.

Description

Usage

Value

Arguments