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Logical Negation for Neuroimaging Volumes

Source: R/ops.R
not-methods.Rd

Logical negation (!) for neuroimaging volumes. Returns a LogicalNeuroVol where non-zero voxels become FALSE and zero voxels become TRUE.

Usage

# S4 method for class 'DenseNeuroVol'
!x

# S4 method for class 'SparseNeuroVol'
!x

Arguments

x

A neuroimaging volume object.

Value

A LogicalNeuroVol.

Examples

sp <- NeuroSpace(c(5L, 5L, 5L), c(1, 1, 1))
mask <- LogicalNeuroVol(array(sample(c(TRUE, FALSE), 125, replace = TRUE),
                              c(5, 5, 5)), sp)
inv <- !mask