PointPattern-class
object representing a 3D point
pattern with 1,4,5,6,7,8 or 9 points lying in a horizontal rectangle.
PP3(n=4,xp=1,yp=xp,h3=TRUE)
TRUE
, alignments of 3 points (see details below)
are made in the direction of the x-axis
(in the direction of the y-axis if FALSE
). Used only for n
=6, 7 or 8.PointPattern-class
object.
PP2
: when n
=4, the four points lie at the four corners of the
rectangle. When n
=5, the fifth point lies at the center of the
rectangle. When n
=6 (and h3
is TRUE
), four points
lie at the rectangle corners and the two other points lie at the
centres of the "top" and "bottom" edges (parallel to the x-axis). When n
=7 (and h3
is
TRUE
), the point pattern consists of 3 "horizontal" alignments of
2, 3 and 2 points. When n
=8 (and h3
is TRUE
), the point
pattern consists of 3 "horizontal" alignments of 3, 2 and 3 points.
When n
=9, the point pattern consists of 3 ("horizontal" or
"vertical") alignments of 3 points.
PointPattern
, PP2
,
generators of point pattern lattices
PPBCRectLat3
, PPFCRectLat3
, PPRectLat3
.