apply_xifti: Apply a function along the rows or columns of a '"xifti"'

In neuroconductor/ciftiTools: Tools for Reading, Writing, Viewing and Manipulating CIFTI Files

Description

Apply a many-to-N function (e.g. mean) to the rows or columns of a "xifti". If applied row-wise, a "xifti" with N data column(s) is returned. (If the "xifti" had the dlabel intent, and values that are not labels are created, then it is converted to dscalar.) If applied column-wise, a numeric matrix with N rows is returned.

For univariate functions, use transform_xifti instead.

Usage

apply_xifti(xifti, margin = c(1, 2), FUN, ...)

Arguments

xifti	A "xifti" object.
margin	The dimension along which to apply FUN: 1 for rows (default) and 2 for columns.
FUN	The function. It should take in a numeric vector and return a length-N numeric vector.
...	Additional arguments to FUN

Value

A "xifti" if margin == 1, or a numeric matrix if margin == 2

See Also

Other functions for manipulating 'xifti' objects: add_surf(), combine_xifti(), convert_to_dlabel(), merge_xifti(), newdata_xifti(), remove_xifti(), select_xifti(), transform_xifti()

neuroconductor/ciftiTools documentation built on Dec. 22, 2021, 1:09 a.m.