Subset DTI data based on b-values #'

Subset DTI data based on b-values #'

subset_dti(
  img,
  bvals,
  bvecs,
  b_step = 1,
  maximum = Inf,
  shells = NULL,
  verbose = TRUE,
  ...
)

# S4 method for nifti
subset_dti(
  img,
  bvals,
  bvecs,
  b_step = 1,
  maximum = Inf,
  shells = NULL,
  verbose = TRUE,
  ...
)

# S4 method for ANY
subset_dti(
  img,
  bvals,
  bvecs,
  b_step = 1,
  maximum = Inf,
  shells = NULL,
  verbose = TRUE,
  ...
)

# S4 method for character
subset_dti(
  img,
  bvals,
  bvecs,
  b_step = 1,
  maximum = Inf,
  shells = NULL,
  verbose = TRUE,
  ...
)

# S4 method for list
subset_dti(
  img,
  bvals,
  bvecs,
  b_step = 1,
  maximum = Inf,
  shells = NULL,
  verbose = TRUE,
  ...
)

Arguments

img	character or nifti object
bvals	filename of b-values (assuming 1 row)
bvecs	filename of b-vectors (assuming 3 rows)
b_step	step of b-values to round to
maximum	maximum b-value threshold
shells	Shells to keep (after rounding)
verbose	print diagnostic messages
...	options passed to checkimg

Value

List of filenames of image, b-values, and b-vectors that were subsetted.

Author

John Muschelli muschellij2@gmail.com

Examples

if (FALSE) {
img = "~/Downloads/data.nii.gz"
bvals = "~/Downloads/bvals"
bvecs = "~/Downloads/bvals"
verbose = TRUE
b_step = 50
maximum = 1500
shells = NULL
sub = subset_dti(img = img, bvals = bvals, bvecs = bvecs, 
maximum = 1500,
b_step = 50)

}