ria-label="anchor" href="#contiguity-neighbours-for-polygon-support"></a>
</h4>
<p>Here we first generate a queen contiguity nb object using the legacy
spdep approach. This first either uses a pre-computed list of vectors of
probable neighbours or finds intersecting bounding boxes internally.
Then the points on the boundaries of each set of polygons making up an
observation are checked for a distance less than snap to any of the
points of the set of polygons making up an observation included in the
set of c