Number of tiles
in each row and column of the rectangular grid.
An integer vector of length 1 or 2.
...
Ignored.
window
Default window for the point pattern
verbose
Logical flag. If TRUE, information will be printed
about the computation of the grid weights.
Value
Vector of nonnegative weights for each point in X.
Details
This function computes a set of quadrature weights
for a given pattern of points
(typically comprising both ``data'' and `dummy'' points).
See quad.object for an explanation of quadrature
weights and quadrature schemes.
The weights are computed by the ``counting weights'' rule
based on a regular grid of rectangular tiles.
First X and (optionally) window are converted into a
point pattern object. Then the bounding rectangle of the window of
the point pattern is
divided into a regular ntile[1] * ntile[2] grid of rectangular tiles.
The weight attached to a point of X is the area of the tile
in which it lies, divided by the number of points of X lying in
that tile.