Convert ClusteredNeuroVol to a base array

Ensures that clustered volumes dispatch through the `as.array` S4 generic and return dense arrays of cluster labels aligned to the underlying space.

Provides an `as.array` S4 method so sparse volumes can be coerced with the same syntax used for dense objects.

The S4 slots of an object that extends array are stored as attributes on that array, so the default coercion handed back the voxel data still carrying space, header and class. Anyone calling as.array() wants the numbers without the wrapper; these methods give exactly that.

Usage

# S4 method for class 'ClusteredNeuroVol'
as.array(x, ...)

# S4 method for class 'DenseNeuroVec'
as.array(x, ...)

# S4 method for class 'SparseNeuroVol'
as.array(x, ...)

# S4 method for class 'DenseNeuroVol'
as.array(x, ...)

# S4 method for class 'NeuroSlice'
as.array(x, ...)

# S4 method for class 'SparseNeuroVec'
as.array(x, ...)

Arguments

x

A SparseNeuroVec object.

...

Additional arguments (currently ignored).

Value

A dense array of cluster ids.

A dense array with voxel values at their spatial locations and zeros elsewhere.

A base array with only a dim attribute.

A dense 4D array with sparse values inserted at mask indices and zeros elsewhere.