twoDto4D: twoDto4D

In AnalyzeFMRI: Functions for Analysis of fMRI Datasets Stored in the ANALYZE or 'NIFTI' Format

twoDto4D

Description

This function transform a 2D matrix of size tm x vm containing 3D images in each row into a 4D array image.

Usage

twoDto4D(x.2d, dim)

Arguments

x.2d	a 2D matrix to be transformed
dim	vector of length 4 containing the dimensions of the array. dim[1:3] are the space dimensions. dim[4] is the time dimension

Value

a 4D array image

See Also

threeDto4D fourDto2D

Examples

# contains t = 3 (fake) 3D "images" each of size 2 x 4 x 4
x.2d <- matrix(rnorm(3 * 32), nrow = 3, ncol = 32)
volume.4d <- twoDto4D(x.2d, dim = c(2, 4, 4, 3))
dim(volume.4d)

AnalyzeFMRI documentation built on Aug. 8, 2025, 7:16 p.m.