niftiImage2fmri: Create fmridata object from niftiImage
In neuroconductor/fmri: Analysis of fMRI Experiments

Description Usage Arguments Details Value Author(s) See Also

Transforms a niftiImage (created by readNifti from package RNiftyReg) into an object with class fmridata

1 2	niftiImage2fmri(niftiobj, level = 0.75, mask=NULL, setmask = TRUE, indx = NULL, indy = NULL, indz = NULL, avoidnegs = FALSE)

`niftiobj`	an object of class niftiImage
`level`	quantile used in mask definition
`mask`	array or nifti-object containing the mask. If set this replaces the mask defined by argument level.
`setmask`	if `TRUE` create a brain mask
`indx`	index vector for subcube definition
`indy`	index vector for subcube definition
`indz`	index vector for subcube definition
`avoidnegs`	if `TRUE` change the mean to avoid negative image intensities

This function can be used in connection with readNifti from package RNiftyReg to read large fMRI series from nifti files. The resulting fmridata-object stores the image data as 2 byte integer in raw format, in contrast for the 4 byte real used with other functions.

an object of class fmridata

Joerg Polzehl polzehl@wias-berlin.de

read.AFNI, read.DICOM, read.ANALYZE, read.NIFTI

neuroconductor/fmri documentation built on May 20, 2021, 4:28 p.m.