maskEmptyImageDimensions-methods | R Documentation |
Simple wrapper for replacing indices with a value
maskEmptyImageDimensions(img, inds, reorient = FALSE, mask.value = 0, ...) ## S4 method for signature 'nifti' maskEmptyImageDimensions(img, inds, reorient = FALSE, mask.value = 0, ...) ## S4 method for signature 'character' maskEmptyImageDimensions(img, inds, reorient = FALSE, mask.value = 0, ...) ## S4 method for signature 'factor' maskEmptyImageDimensions(img, inds, reorient = FALSE, mask.value = 0, ...) ## S4 method for signature 'list' maskEmptyImageDimensions(img, inds, reorient = FALSE, mask.value = 0, ...) ## S4 method for signature 'array' maskEmptyImageDimensions(img, inds, reorient = FALSE, mask.value = 0, ...) ## S4 method for signature 'anlz' maskEmptyImageDimensions(img, inds, reorient = FALSE, mask.value = 0, ...) ## S4 method for signature 'ANY' maskEmptyImageDimensions(img, inds, reorient = FALSE, mask.value = 0, ...) mask_empty_dim(img, ...)
img |
image, nifti object, or array |
inds |
indices of subset from |
reorient |
Should image be reoriented if a filename? |
mask.value |
Value to replace voxels outside the mask. |
... |
not used |
Object of class nifti
or array
if nifti
is not supplied
mask_empty_dim
is a shorthand for
maskEmptyImageDimensions
with all the same arguments.
getEmptyImageDimensions
,
dropEmptyImageDimensions
set.seed(5) dims = rep(10, 3) arr = array(rnorm(prod(dims)), dim = dims) arr[,,10] = 0 nim = oro.nifti::nifti(arr) inds = getEmptyImageDimensions(nim) inds_arr = getEmptyImageDimensions(arr) res = maskEmptyImageDimensions(nim, inds = inds, mask.value = NA) res2 = maskEmptyImageDimensions(arr, inds = inds_arr, mask.value = NA) testthat::expect_equal(array(res, dim = dim(res)), array(res2, dim = dim(res2))) set.seed(5) dims = rep(10, 3) arr = array(rnorm(prod(dims)), dim = dims) arr[,,10] = 0 nim = oro.nifti::nifti(arr) inds = getEmptyImageDimensions(nim) rnifti = RNifti::asNifti(nim) timg = tempimg(nim) limg = list(factor(timg), factor(timg)) mask_empty_dim(nim, inds = inds) func = function(...) maskEmptyImageDimensions(..., inds = inds) func(arr) func(nim) func(rnifti) func(timg) func(limg)
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