antsImageGetSet: antsImageGetSet

In muschellij2/atropos: Core Software Infrastructure for 'ANTsR'

Description

Get and set methods for image header information

Usage

antsGetSpacing(x)

antsSetSpacing(x, spacing)

antsGetOrigin(x)

antsSetOrigin(x, origin)

antsGetDirection(x)

antsSetDirection(x, direction)

Arguments

x	antsImage to access, of dimensionality d.
spacing	numeric vector of length d.
origin	numeric vector of length d.
direction	matrix of size d * d.

Value

For get methods, vector of length d (origin, spacing) or matrix of size d * d (direction). For set methods, 0 to indicate success.

Examples

img <- makeImage(c(5,5), rnorm(25))
antsGetSpacing(img)
antsSetSpacing(img, c(2.0, 2.0))
antsGetOrigin(img)
antsSetOrigin(img, c(0.5, 0.5))
testthat::expect_error(antsGetSpacing(as.array(img) ) )
testthat::expect_error(antsSetSpacing(as.array(img), c(2,2) ), "class" )
testthat::expect_error(antsSetSpacing(img, c("2",2) ), "numeric" )
testthat::expect_error(antsSetSpacing(img, c(3,3,3) ), "dimensions" )

testthat::expect_error(antsGetOrigin(as.array(img) ) )
testthat::expect_error(antsSetOrigin(as.array(img), c(0.5, 0.5) ) )
testthat::expect_error(antsSetOrigin(img, c("0.5", 0.5) ) )
testthat::expect_error(antsSetOrigin(img, c(0.5, 0.5, 0.5) ) )
img <- makeImage(c(5,5), rnorm(25))
antsGetDirection(img)
testthat::expect_error(antsGetDirection(as.array(img) ) )
outimg <- makeImage(c(5,5), rnorm(25))
antsGetDirection(outimg)
direct = antsGetDirection(outimg)
antsSetDirection(outimg, direct)
testthat::expect_error(antsSetDirection(as.array(outimg), direct) ) 
testthat::expect_error(antsSetDirection(outimg, as.numeric(direct)) ) 
testthat::expect_error(antsSetDirection(outimg, diag(length(dim(outimg))+1) ))

muschellij2/atropos documentation built on May 4, 2019, 3:17 p.m.