ALVIN Mask

ALVIN Mask

alvin_mask(mm = c("2", "1", "0.5"))

alvin_image(mm = c("2", "1", "0.5"), ...)

Arguments

mm	The resolution for the MNI template to correspond to.
...	additional arguments to pass to readnii

Value

Path to ALVIN NIfTI image

Examples

alvin_mask()
#> [1] "/home/runner/work/_temp/Library/alvin/ALVIN_mask_v1.nii.gz"
alvin_mask(mm = 1)
#> [1] "/home/runner/work/_temp/Library/alvin/ALVIN_mask_v1_1mm.nii.gz"
alvin_mask(mm = 0.5)
#> [1] "/home/runner/work/_temp/Library/alvin/ALVIN_mask_v1_0.5mm.nii.gz"
alvin_image()
#> NIfTI-1 format
#>   Type            : nifti
#>   Data Type       : 4 (INT16)
#>   Bits per Pixel  : 16
#>   Slice Code      : 0 (Unknown)
#>   Intent Code     : 0 (None)
#>   Qform Code      : 2 (Aligned_Anat)
#>   Sform Code      : 2 (Aligned_Anat)
#>   Dimension       : 91 x 109 x 91
#>   Pixel Dimension : 2 x 2 x 2
#>   Voxel Units     : mm
#>   Time Units      : sec
testthat::expect_equal(
dim(alvin_image(1, read_data = FALSE)),
c(182L, 218L, 182L))
#> Warning: Need to change bitpix and datatype to FLOAT32 due to NAs
#> Error in datatyper(nim, warn = warn) object 'nim' not found
testthat::expect_equal(
dim(alvin_image(0.5, read_data = FALSE)),
c(364L, 436L, 364L))
#> Warning: Need to change bitpix and datatype to FLOAT32 due to NAs
#> Error in datatyper(nim, warn = warn) object 'nim' not found