Checks whether each tile in a tessellation is empty or non-empty.
A tessellation (object of class
A tessellation is a collection of disjoint spatial regions
(called tiles) that fit together to form a larger spatial
It is possible for some tiles of a tessellation to be empty.
For example, this can happen
when the tessellation
x is obtained by restricting
y to a smaller spatial domain
tiles.empty checks whether each tile is empty
or non-empty. The result is a logical vector,
with entries equal to
TRUE when the corresponding tile is
empty. Results are given in the same order
as the tiles would be listed by
A logical vector.
1 2 3 4 5
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