idx_Param

internal

CIFTI files contain brain imaging data in "grayordinates," which
represent the gray matter as cortical surface vertices (left and right) and
subcortical voxels (cerebellum, basal ganglia, and other deep gray matter).
'ciftiTools' provides a unified environment for reading, writing,
visualizing and manipulating CIFTI-format data. It supports the "dscalar,"
"dlabel," and "dtseries" intents. Grayordinate data is read in as a "xifti"
object, which is structured for convenient access to the data and metadata,
and includes support for surface geometry files to enable
spatially-dependent functionality such as static or interactive
visualizations and smoothing.

Amanda Mejia

ciftiTools

Tools for Reading, Writing, Viewing and Manipulating CIFTI Files

Damon Pham

John Muschelli

idx_Param function

<dl><dt>idx</dt>
<dd>Numeric vector indicating the data indices (columns) to read. If
<code>NULL</code> (default), read in all the data. Must be a subset of the indices
present in the file, or an error will occur.
For high-resolution CIFTI files, reading in only a subset of the data saves
memory, but will be slower than reading in the entire file due to the
required intermediate steps.</dd></dl>

Arguments

idx — idx_Param

<dl>

<dt>idx</dt>
<dd>Numeric vector indicating the data indices (columns) to read. If
<code>NULL</code> (default), read in all the data. Must be a subset of the indices
present in the file, or an error will occur.
For high-resolution CIFTI files, reading in only a subset of the data saves
memory, but will be slower than reading in the entire file due to the
required intermediate steps.</dd>

</dl>

idx_Param: idx

Description

Arguments