The components function finds connected components in a numeric
array. The kernel determines which neighbours are considered connected (e.g.
including or excluding diagonal neighbours), and will usually have width 3
in each dimension.
Usage
components(x, kernel, ...)
# S3 method for default
components(x, kernel, ...)
Value
An array of the same dimension as the original, whose integer-valued
elements identify the component to which each element in the array
belongs. Zero values in the original array will result in NAs.
Arguments
x
Any object. For the default method, this must be coercible to an
array.
kernel
An object representing the kernel to be used, which must be
coercible to an array. It must have odd width in all dimensions, but does
not have to be isotropic in size. The kernel's dimensionality may be less
than that of the target array, x. See kernels for
kernel-generating functions.