write.nii.volume: Write NIfTI-1 Volume

In TKoscik/tk.nifti: Read and Write NIfTI Files

Description

Write values to a specific volume in a NIfTI-1 file.

Usage

  write.nii.volume(nii.file, vol.num, values)

Arguments

nii.file	Full directory listing to a NIfTI file. File must not be gzipped.
vol.num	An integer indicating which volume to read.
values	an array or vector of values to be written

Details

NIfTI files need to be unzipped before using this function or any other portions of the nifti.io package. This is necessary given the inconsistent way in which gzipped files are indexed.

Value

Output directly to NIFTI file.

Author(s)

Timothy R. Koscik <[e-mail]>

Examples

## Not run: 
reference.image = "~/reference_image.nii"
pixdim = info.nii(nii.file = reference.image, field="pixdim")
orientation = info.nii(nii.file = reference.image, field="orientation")
init.nii(file.name = "~/example_image.nii",
         dims = c(100,100,100),
         pixdim = pixdim,
         orient = orientation)
new.values <- rnorm(prod(c(100,100,100)))
write.nii.volume(nii.file = "~/example_image.nii",
                 vol.num = 1,
                 values = new.values)

## End(Not run)

TKoscik/tk.nifti documentation built on June 6, 2021, 2:30 a.m.