Copy NIfTI Header to an array

Copies slots of a nifti object to an array. This is useful if you're subsetting 4D data and getting an array out

copyNIfTIHeader(
  img,
  arr,
  drop_slots = c(".Data", "dim_"),
  drop = TRUE,
  onlylast = TRUE,
  warn = TRUE,
  ...
)

Arguments

img	object of class nifti to copy header
arr	array to copy header information
drop_slots	Slots not to copy over from header
drop	Should dropImageDimension be called before returning?
onlylast	if drop = TRUE, passed to dropImageDimension, if only the last dimensions should be dropped
warn	if drop = TRUE, passed to dropImageDimension, for warning print out
...	arguments to pass to nifti

Value

Object of class nifti the size of arr

Examples

img = nifti(img = array(rnorm(10^4), dim=rep(10, 4)), dim=rep(10, 4), datatype = 16)
sub = img[,,,1:3]
copyNIfTIHeader(img, sub)
#> NIfTI-1 format
#>   Type            : nifti
#>   Data Type       : 16 (FLOAT32)
#>   Bits per Pixel  : 32
#>   Slice Code      : 0 (Unknown)
#>   Intent Code     : 0 (None)
#>   Qform Code      : 0 (Unknown)
#>   Sform Code      : 0 (Unknown)
#>   Dimension       : 10 x 10 x 10 x 3
#>   Pixel Dimension : 1 x 1 x 1 x 1
#>   Voxel Units     : Unknown
#>   Time Units      : Unknown
sub = img[,,,1, drop=FALSE]
copyNIfTIHeader(img, sub) 
#> NIfTI-1 format
#>   Type            : nifti
#>   Data Type       : 16 (FLOAT32)
#>   Bits per Pixel  : 32
#>   Slice Code      : 0 (Unknown)
#>   Intent Code     : 0 (None)
#>   Qform Code      : 0 (Unknown)
#>   Sform Code      : 0 (Unknown)
#>   Dimension       : 10 x 10 x 10
#>   Pixel Dimension : 1 x 1 x 1
#>   Voxel Units     : Unknown
#>   Time Units      : Unknown
copyNIfTIHeader(img, sub, drop = FALSE) 
#> NIfTI-1 format
#>   Type            : nifti
#>   Data Type       : 16 (FLOAT32)
#>   Bits per Pixel  : 32
#>   Slice Code      : 0 (Unknown)
#>   Intent Code     : 0 (None)
#>   Qform Code      : 0 (Unknown)
#>   Sform Code      : 0 (Unknown)
#>   Dimension       : 10 x 10 x 10 x 1
#>   Pixel Dimension : 1 x 1 x 1 x 1
#>   Voxel Units     : Unknown
#>   Time Units      : Unknown