R/im3d.R
Make im3d image array containing values at locations defined by a mask
unmask(x, mask, default = NA, attributes. = attributes(mask), copyAttributes = TRUE)
x | the data to place on a regular grid |
---|---|
mask | An |
default | Value for regions outside the mask (default: NA) |
attributes. | Attributes to set on new object. Defaults to attributes of
|
copyAttributes | Whether to copy over attributes (including |
A new im3d
object with attributes/dimensions defined by
mask
and values from x
. If copyAttributes
is
FALSE
, then it will have mode of x
and length of mask
but no other attributes.
The values in x will be placed into a grid defined by the dimensions
of the mask
in the order defined by the standard R linear
subscripting of arrays (see e.g. arrayInd
).
Other im3d: as.im3d
,
boundingbox
, im3d-coords
,
im3d-io
, im3d
,
imexpand.grid
, imslice
,
is.im3d
, mask
,
origin
, projection
,
threshold
, voxdims
# NOT RUN { # read in a mask LHMask=read.im3d(system.file('tests/testthat/testdata/nrrd/LHMask.nrrd', package='nat')) # pick out all the non zero values inmask=LHMask[LHMask!=0] # fill the non-zero elements of the mask with a vector that iterates over the # values 0:9 stripes=unmask(seq(inmask)%%10, LHMask) # make an image from one slice of that result array image(imslice(stripes,11), asp=TRUE) # }